| 单词 | involucre |
| 例句 | Sporangia with a transverse entire ring, sessile on a cylindrical receptacle which is produced from the end of a vein and enclosed in a funnel-form or cup-shaped involucre of the same substance with the frond. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Composed of several florets within a common involucre, as in the daisy; or of several carpels formed from one flower, as in the raspberry. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z Leeches are oviparous, and their ova are discharged in one involucre near the surface and margin of pools, and are hatched by the heat of the sun. Curiosities of Medical Experience 2012-03-09T03:00:20.410Z Flowers.—In a close head on a common receptacle, surrounded by an involucre, whose divisions are called scales or bracts. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z What is known as the “hen-and-chicken” daisy has the main head surrounded by a brood of sometimes as many as ten or twelve small heads, formed in the axils of the scales of the involucre. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 9 "Dagupan" to "David" 2012-02-11T03:03:39.807Z Empty glumes side by side in front of the spikelets, 6 in number, forming a kind of involucre, slender and awn-pointed or bristle-form. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z The involucre or cup in which the acorn is fixed. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z Leaves rough, often serrate; the lowest ovate, five nerved, veiny, long petioled; the other ovate-lanceolate; involucre imbricated in three to five rows; stem smooth, or in one form rough, bristly, as well as the leaves. New, Old, and Forgotten Remedies: Papers by Many Writers 2012-02-05T03:00:10Z The plants of this family are quickly recognized by the flowers being always borne in a head and surrounded by an involucre, and presenting the appearance of a single flower. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z The variety palustre, which affects boggy situations, and flowers in late summer and autumn, has nearly entire leaves, and the outer bracts of its involucre are erect. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 9 "Dagupan" to "David" 2012-02-11T03:03:39.807Z Fruit-dots roundish or oblong, placed near the ends of the veins, soon more or less confluent into an irregular marginal band, with no proper involucre. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Nigella, nī-jel′a, n. a genus of ranunculaceous plants, with finely dissected leaves, and whitish, blue, or yellow flowers, often almost concealed by their leafy involucres—Nigella damascena, called Love-in-a-mist, Devil-in-a-bush, and Ragged Lady. Chambers's Twentieth Century Dictionary (part 3 of 4: N-R) 2012-01-30T03:00:13.887Z After fertilization has been accomplished throughout the blossom, the involucre closes, and remains closed during the ripening of the fruit. Scientific American Supplement, No. 648, June 2, 1888. 2011-12-26T03:00:15.410Z These blossoms are always borne in pairs at the summit of the stem, and are surrounded by a leafy involucre, consisting of two pairs of round, fluted bracts. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z The cup-shaped involucre of Cornucopia is a dilatation of the axis into a hollow receptacle with a raised border. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z Calyptra membranous, oval, longer or shorter than the involucre. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Its flower-heads are surrounded by a spreading foliaceous woolly involucre, and its foliage is also of the same woolly character. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z This involucre is frequently composed of several rows of leaflets, which are either of the same or of different forms and lengths, and often lie over each other in an imbricated manner. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z Flowers.—Yellow; five or six lines long; in dense clusters, subtended by an involucre of five distinct bracts. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z In Setaria and allied genera the spikelet is subtended by an involucre of bristles or spines which represent sterile branches of the inflorescence. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z Receptacle rising from the apex, conic or hemispheric, concave beneath and expanded into usually 4 large campanulate 1-fruited involucres. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z In the Sweet Chestnut the brown skin of the nut is the ovary, which had been overgrown by the prickly involucre; here the spiny green shell is the ovary, and the "nut" a seed. Wayside and Woodland Trees A pocket guide to the British sylva 2010-12-25T03:00:16.510Z In Compositae besides the involucre there are frequently chaffy and setose bracts at the base of each flower, and in Dipsacaceae a membranous tube surrounds each flower. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z Subtended, supported or surrounded; as a pedicel by a bract, or a flower-cluster by an involucre. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z The flowers are borne on an erect umbel and central scape with involucre. The New Gresham Encyclopedia. Vol. 1 Part 3 Atrebates to Bedlis Thallus decumbent, irregularly lobed, 1–2´ long, 3–5´´ wide; involucre none; pedicel ¾–1´ long, sometimes folded upon itself and remaining within the calyptra, the capsule thus appearing sessile; antheridia on elongated receptacles.—Wooded swamps. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Here the involucre, in the form of a cup at the base, is called the Cupule. The Elements of Botany For Beginners and For Schools Its showy involucres attract a crowd of moths, butterflies, and other winged people about it for their own and, I suppose, the tree's advantage. My First Summer in the Sierra The involucre is thickly studded with curious little glands, resembling small glass-headed pins. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z Flower clusters small and dense, surrounded by a showy involucre of 4 bracts, resembling a corolla of 4 petals — 4. 3b. The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State Thallus orbicular, 3–6´´ broad, covered by the clustered inflated involucres, which are nearly 1´´ long, 3–4 times the length of the capsule; coccus 102–127 µ wide, indistinctly lobed. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Partial involucre, same as an involucel; partial petiole, a division of a main leaf-stalk or the stalk of a leaflet; partial peduncle, a branch of a peduncle; partial umbel, an umbellet, 76. The Elements of Botany For Beginners and For Schools The delicate creature in its prickly, thick-walled home suggests a tender flower in a thorny involucre. My First Summer in the Sierra Flowers.—White or pinkish; in densely crowded compound clusters; several perianths contained in the involucres. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z Principal bracts of the involucre 5, with frequently a few much smaller ones — 76. 75b. The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State Umbels usually compound, in which case the secondary ones are termed umbellets; the whorl of bracts which often subtends the general umbel is the involucre, and those of the umbellets the involucels. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z The coating in these cases is an involucre. Trees of the Northern United States Their Study, Description and Determination The involucres are six to eight inches wide. My First Summer in the Sierra Flowers.—Numerous; small; greenish; in a head surrounded by an involucre of four to six large, yellowish or white bracts, often tinged with red, and eighteen lines to three inches long. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z Flowers of the composite type, with several or many small flowerets closely aggregated into a dense head surrounded by a calyx-like involucre of small bracts 10, in COMPOSITAE. p. The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State Distinguished from the last two tribes by the more or less dry and scarious imbricated scales of the involucre. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Large panicles of small whitish flowers in umbels, with involucres of few leaves. Trees of the Northern United States Their Study, Description and Determination Dr. Prior has decided that "'Filbert' is a barbarous compound of phillon or feuille, a leaf, and beard, to denote its distinguishing peculiarity, the leafy involucre projecting beyond the nut." The plant-lore & garden-craft of Shakespeare They have from fifty to seventy rays and their involucres consist of several rows of scarious-margined bracts. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z Plants of the composite type, with several or many small flowerets closely aggregated into a dense head surrounded or subtended by a calyx-like involucre of small bracts — 67. 66b. The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State Well distinguished by its long or drooping racemes, and the closely appressed rigid scales of the involucre, small rays, etc. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Flowers small, yellow, in umbels from a 4-leaved involucre, blooming before the leaves are out in spring. Trees of the Northern United States Their Study, Description and Determination It is, of course, in allusion to the involucre, which looks as if it were snipped out of white flannel. Austral English A dictionary of Australasian words, phrases and usages with those aboriginal-Australian and Maori words which have become incorporated in the language, and the commoner scientific words that have had their origin in Australasia There is a difference in the involucre, which has two series of bracts, and there are no touches of black among the disk-flowers. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z Flowers in various sorts of clusters or solitary, but never in heads with a conspicuous involucre — 100. 99a. The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State Carpels few, stipitate, several-seeded.—Perennial herbs, with palmately multifid radical leaves, the scape bearing a single large yellow flower surrounded by an involucre of a single leaf. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Fruit an ovoid-oblong bony nut, inclosed in a thickish involucre of two leaves with a lacerated frilled border; ripe in autumn. Trees of the Northern United States Their Study, Description and Determination Individual involucres, 3 oval leaflets, the lower larger. The Medicinal Plants of the Philippines Flowers.—Sulphur-yellow; two or three lines long; many contained in each little top-shaped involucre, on threadlike stems. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z Pistillate flowers in an ovoid spiny involucre, ripening into a bur 3a, in COMPOSITAE, p. The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State Fruit oblong, glabrous, with prominent ribs and solitary oil-tubes.—Stout glabrous aromatic herb, with leaves dissected into numerous filiform segments, no involucre nor involucels, and large umbels of yellow flowers. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z The involucre, extending beyond the nut in a bract like a bottle, is covered with stiff, short hairs. Trees of the Northern United States Their Study, Description and Determination Staminate solitary, peduncles very long, involucre cordate; calyx 5-lobed; corolla 5 petals; filaments simple, one separate, 2 approximated; anthers joined at their bases. The Medicinal Plants of the Philippines Scales.—of the involucre each clasping a ray. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z Plants of the composite type, with several or many small flowerets closely aggregated into a dense head subtended by a calyx-like involucre of small bracts — 146. The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State Leaves with 3 ovate and pointed lobes, or sometimes 5-lobed; those of the involucre acute or acutish.—Passes into the other and has the same range. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Most of the nuts drop because of the injury to the involucre. Northern Nut Growers Association, Report of the Proceedings at the Seventh Annual Meeting Washington, D. C. September 8 and 9, 1916. Flowers pink, verticillate, in opposite clusters around the stem, with several linear and hairy involucres at the base of each cluster. The Medicinal Plants of the Philippines Bracts of the involucre in two series; green. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z Plants of the composite type, with several or many small flowerets closely aggregated in dense heads subtended by a calyx-like involucre of small bracts 11, in COMPOSITAE, p. The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State Seed suspended.—Perennial herbs with radical leaves; those of the stem 2 or 3 together, opposite or whorled, and forming an involucre remote from the flower; peduncles 1-flowered, solitary or umbellate. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z This purple variety has nuts with a brownish red involucre showing sharply against the green leaves. Northern Nut Growers Association Report of the Proceedings at the Fifteenth Annual Meeting New York City, September 3, 4 and 5, 1924 When the flowers are united, a cluster of small points of very light green wax are placed: these are what are termed by botanists, "calyx involucre," signifying that such calyx is remote from the flower. The Royal Guide to Wax Flower Modelling Scape with two leaves; the bracts of the involucre are also leafy. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Leaves of the involucre broadly obovate to nearly circular, widest near or above the middle Spurge, Euphorbia helioscopia. 13a. The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State Capsule filling the involucre, circumscissile in the middle, the calyptra persistent at its base. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z In some localities involucre borers make tunnels between the nut and the involucre, interfering with the development of the kernel. Northern Nut Growers Association Report of the Proceedings at the Second Annual Meeting Ithaca, New York, December 14 and 15, 1911 And I had no more a month than a life, to spare: so the action only of the spreading flower is indicated, but the involucre drawn with precision. Proserpina, Volume 1 Studies Of Wayside Flowers L, single group of flowers, surrounded by the corolla-like involucre, × 3. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Bracts of the involucre green or colored, but never dry and chaffy — 90. 79a. The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State Thallus 3–6´´ long, 1–3´´ wide, with membranous margins; receptacle small, hemispherical, 1–4-fruited, the peduncle about 1´ high, sparingly scaly at base, barbulate at the apex; involucre short, crenulate; spores tuberculate. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z This beetle ordinarily lays its eggs in the involucre of the butternut. Northern Nut Growers Association Report of the Proceedings at the Second Annual Meeting Ithaca, New York, December 14 and 15, 1911 A, Longitudinal section of thallus at the time of fertilization. an, Antheridia; ar, archegonia; in, involucre. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" The nuts, with their leaflike involucres, are attractive in appearance in August and September. Northern Nut Growers Association, Report Of The Proceedings At The Tenth Annual Meeting. Battle Creek, Michigan, December 9 and 10, 1919 I have found now and then a little weevil, about half a dozen altogether, that attacks the involucre at its point of attachment to the chinquapin. Northern Nut Growers Association, report of the proceedings at the eighth annual meeting Stamford, Connecticut, September 5 and 6, 1917 Scales of the involucre dry and scarious, white or colored, imbricated in several rows. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z The scaly involucre is formed of numerous small members of a dark olive-green colour, neatly arranged and firmly clasping the whole flower. Hardy Perennials and Old Fashioned Flowers Describing the Most Desirable Plants, for Borders, Rockeries, and Shrubberies. In addition special involucres around the archegonia have arisen independently in several series. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" "Filbert" is a corruption of "full beard," and refers to the involucre extending beyond the nut. Northern Nut Growers Association, report of the proceedings at the sixth annual meeting Rochester, New York, September 1 and 2, 1915 On one of my black walnut trees there is a serious pest, a very little worm which infests the involucre. Northern Nut Growers Association, report of the proceedings at the eighth annual meeting Stamford, Connecticut, September 5 and 6, 1917 Scales of the broad and flattish involucre imbricated in several rows, thickish, broad and with loose leaf-like summits, except the innermost, which resemble the linear chaff of the flat receptacle. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z The leaves are ternate, segments numerous; each leaf springs from the tuber, with the exception of those of the involucre. Hardy Perennials and Old Fashioned Flowers Describing the Most Desirable Plants, for Borders, Rockeries, and Shrubberies. The archegonia are protected by being sunk in depressions of the disk or by a special two-lipped involucre. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" This resulted in more abundant flowers and some abortive involucres but still no nuts developed. Growing Nuts in the North A Personal Story of the Author's Experience of 33 Years with Nut Culture in Minnesota and Wisconsin In these the involucre is little altered, and the receptacle is attacked by larva. Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries Sterile involucres and flowers as in Ambrosia, but the scales separate and receptacle cylindrical. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Whether open or shut, they are a pure white, and their pendent habit adds not a little to their beauty, as also does the leafy involucre. Hardy Perennials and Old Fashioned Flowers Describing the Most Desirable Plants, for Borders, Rockeries, and Shrubberies. The small thallus bears the antheridia and archegonia, each of which is surrounded by a tubular involucre, on the upper surface of distinct individuals. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" I found the first point of similarity with the filbert is in the involucre covering the nut. Growing Nuts in the North A Personal Story of the Author's Experience of 33 Years with Nut Culture in Minnesota and Wisconsin The flowers are usually arranged in simple or compound umbels, and the main and subordinate clusters may or may not be provided with involucres and involucels. Scientific American Supplement, No. 829, November 21, 1891 Style-tips truncate or nearly so; outer involucre small and short; rays rose-color or yellow with brown base; pappus an obscure border or none. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Others have an external bitter rind, as in the walnut; while in the chestnuts and beech-nuts two or three fruits are enclosed in a prickly involucre. Darwinism (1889) The sexual organs are borne on the upper surface of the midrib, and the sporogonium is surrounded by a bell-shaped involucre which grows up after fertilization. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" This is also true of the Winkler whose involucre is fairly thick but outlines the form of the enclosed nut. Growing Nuts in the North A Personal Story of the Author's Experience of 33 Years with Nut Culture in Minnesota and Wisconsin The elongated flower stem bears one or several, white, red, blue or rarely yellow, flowers; there is an involucre of three leaflets below each flower. Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 Leaves simple, lance-linear, sharply serrate with appressed teeth; corymb loose; rays 8–12, much longer than the broader campanulate involucre; flowers white.—Mass., The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z We also met with bushes of the rare Trymalium majoranaefolium, a hoary bush with clusters of small grey flowers, enclosed when young in a bright, large membranous involucre. Three Expeditions into the Interior of Eastern Australia, Volume 2 Yet the practice cannot be sheer suicide, when the Dutch peasant-girl plods bloomingly through her daily duties beneath a dozen successive involucres of flannel. The Atlantic Monthly, Volume 09, No. 56, June, 1862 The involucre of the Winkler hazel is formed much more like that of the filbert than that of the hazel. Growing Nuts in the North A Personal Story of the Author's Experience of 33 Years with Nut Culture in Minnesota and Wisconsin Sporangia clustered around the slender bristle, which is the prolongation of a vein, and surrounded by a vase-like, slightly two-lipped involucre. The Fern Lover's Companion A Guide for the Northeastern States and Canada Scales of the bell-shaped involucre lanceolate, equal, somewhat in 2 rows. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Kennedy showed before the Dublin Pathological Society 5 fetuses with the involucra, the product of an abortion at the third month. Anomalies and Curiosities of Medicine The fronds are very delicate and often translucent, and the sporangia are borne on threadlike receptacles rising from the middle of cup-shaped marginal involucres. The Gutenberg Webster's Unabridged Dictionary Section T, U, V, and W Nuttall's flowering dogwood makes a brave display with its wealth of show involucres in the spring along cool streams. Steep Trails California, Utah, Nevada, Washington, Oregon, the Grand Canyon Pinnæ triangular-ovate, usually distant, the ends of the rounded lobes reflexed and forming separate involucres which are pushed back by the ripening sporangia. The Fern Lover's Companion A Guide for the Northeastern States and Canada Heads many-flowered; rays pistillate, or none; involucre cylindrical to bell-shaped, simple or with a few bractlets at the base, the scales erect-connivent. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Boneset; Common Thorough wort; Agueweed; Indian Sage Eupatorium perfoliatum Flower-heads—Composite, the numerous, small, dull, white heads of tubular florets only, crowded in a scaly involucre and borne in spreading, flat-topped terminal cymes. Wild Flowers Worth Knowing The scapes themselves are of varying length, often very short, and seldom long, and their umbels display the involucre of bracts in a manner quite analogous to that of the Primula officinalis and P. elatior. Species and Varieties, Their Origin by Mutation Some of the involucres of the flowering dogwood measure six to eight inches in diameter, and the whole tree when in flower looks as if covered with snow. The Yosemite An evergreen shrub, with oblong, light green leaves and terminal inconspicuous greenish flowers, surrounded by an involucre of four large, pinky-yellow bracts. Hardy Ornamental Flowering Trees and Shrubs Scales of the cylindrical involucre in a single row, linear, acute, with a few small bractlets at the base. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Tansy; Bitter-buttons Tanacetum vulgare Flower-heads—Small, round, of tubular florets only, packed within a depressed involucre, and borne in flat-topped corymbs. Wild Flowers Worth Knowing In this way they form a kind of involucre around the central parts. Species and Varieties, Their Origin by Mutation The majority of the eggs were laid upon the calyx and involucre. Thirty Years a Slave It is a handsome shrub or small-growing tree, with small flowers surrounded by a large and conspicuous white involucre. Hardy Ornamental Flowering Trees and Shrubs Scales of the ovoid or spherical involucre imbricated in many rows, tipped with a point or prickle. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Pearly, or Large-flowered, Everlasting; Immortelle, Silver Leaf; Moonshine; Cottonweed; None-so-pretty Anaphalis margaritacea Flower-heads—Numerous pearly-white scales of the involucre holding tubular florets only; borne in broad, rather flat, compound corymbs at the summit. Wild Flowers Worth Knowing The glands of the involucres are elliptic or oblong, and even the seeds vary in shape. Species and Varieties, Their Origin by Mutation The worm, after gnawing through its enclosed shell, makes its first meal upon the part of the plant upon which the egg was laid, be it leaf, stem or involucre. Thirty Years a Slave By the end of this month, most of the species had ripened their seeds, but undecayed, still seemed to be in bloom from the numerous corolla-like involucres and whorls of chaffy scales of the composite. The Mountains of California Low, annual, simple or sparingly branched, minutely downy; leaves oblong-lanceolate, thin, veiny, roughish with opaque dots; flowers shorter than the involucre; stigma sessile.—Shaded rocky banks, E. Mass. and Vt. to Minn., and southward. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Half the involucre bends downward to protect the flower from crawling pilferers, half stands erect to play the role for the community of florets within that the calyx does for individual blossoms. Wild Flowers An Aid to Knowledge of Our Wild Flowers and Their Insect Visitors In the dandelion the bracts of the involucre give the best characters. Species and Varieties, Their Origin by Mutation Nut ovoid or oblong, bony, enclosed in a leafy or partly coriaceous cup or involucre, consisting of the two bractlets enlarged and often grown together, lacerated at the border. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Leaves roundish-heart-shaped, pointed; involucre open above down to the globose nut, of 2 broad foliaceous cut-toothed almost distinct bracts, their base coriaceous and downy, or with glandular bristles intermixed.—Thickets, The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Flowers solitary, nearly sessile in a tubular sac-like involucre, destitute of floral envelopes. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z When it is time to close the dandelion shop, business being ended for the day, this upper-half of the involucre protects it like the heavy shutters merchants put up at their windows. Wild Flowers An Aid to Knowledge of Our Wild Flowers and Their Insect Visitors Nuts coriaceous, ovoid, enclosed 2–3 together or solitary in the hard and thick very prickly 4-valved involucre. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Nuts sharply 3-sided, usually 2 in each urn-shaped and soft-prickly coriaceous involucre, which divides to below the middle into 4 valves. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Glumes conspicuous, nearly side by side in front of the spikelets, 2 for each spikelet, forming an involucre to the cluster. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Flowers light yellow, preceding the leaves, 3 or 4 in a cluster from a bud of as many dark-hairy scales, forming an involucre, from which soon after proceeds a leafy branch. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Only forty to seventy five-toothed ray florets spread in a flat golden disk from an oblong involucre. Wild Flowers An Aid to Knowledge of Our Wild Flowers and Their Insect Visitors Flowers 3–5 in the same 5-lobed membranaceous broad and open involucre, which enlarges and is thin and reticulated in fruit. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scales of the involucre equal and all in one row. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Leaves opposite 74 Scales of the involucre imbricated. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Sterile flowers numerous and lining the base of the involucre, each from the axil of a little bract, and consisting merely of a single stamen jointed on a pedicel like the filament; anther-cells globular, separate. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z At the top of the scape is a double involucre of narrow, green, leaf-like scales similar to what all composites have. Wild Flowers An Aid to Knowledge of Our Wild Flowers and Their Insect Visitors Sterile heads in single or panicled racemes or spikes, the involucre regular. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scales of the involucre leaf-like, in about 2 rows, spreading. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Fertile flowers with no calyx, and no involucre to the compressed and often winged small nut. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Fertile flower solitary in the middle of the involucre, soon protruded on a long pedicel, consisting of a 3-lobed and 3-celled ovary with no calyx, or a mere vestige. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Staminate flowers scattered over inner surface of involucre, each composed of a single stamen on a thread-like pedicel with a rudimentary calyx or tiny bract below it. Wild Flowers An Aid to Knowledge of Our Wild Flowers and Their Insect Visitors Fertile flowers in a short ament or head, 2 to each bract, and each with one or more bractlets which form a foliaceous involucre to the nut. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Leaves ovate or ovate-oblong, somewhat heart-shaped, pointed; involucre of united bracts, much prolonged above the ovoid nut into a narrow tubular beak, densely bristly.—N. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z The leaves of the involucre, of whatever form or texture, are termed scales. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z A. Glands of the involucre with petal-like, usually white or rose-colored, margins or appendages; these almost obsolete in n. 1. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z The lavender fringe and the hairy involucre and stem serve the end of discouraging crawling insects, which cannot transfer pollen from plant to plant, from pilfering sweets that cannot be properly paid for. Wild Flowers An Aid to Knowledge of Our Wild Flowers and Their Insect Visitors Leaves alternate 75 Scales of the involucre in two rows. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scales of the hemispherical involucre imbricated in several series, with slender more or less spreading green tips. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scales of the hemispherical involucre ovate or lanceolate, membranaceous or coriaceous, nearly equal, appressed in 2 or 3 ranks, little shorter than the disk. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Uppermost leaves with conspicuous white petal-like margins, whorled or opposite, the others scattered; erect annuals, with leaves equal at base and entire, and with lanceolate deciduous stipules; involucres 5-lobed, in an umbel-like inflorescence. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z The bristling scales of the involucre, often tinged with purple at the tips, are a conspicuous feature. Wild Flowers An Aid to Knowledge of Our Wild Flowers and Their Insect Visitors Scales of the broad and flat involucre imbricated, with scarious margins. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Stem diffusely much branched; leaves pinnately lobed or spinulose-toothed; heads sessile, the middle scales of the ovoid involucre spiny; pappus none; flowers purple; root annual.—Seaports, The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Flowers small, in open naked cymes, or in close heads surrounded by a corolla-like involucre. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Only the uppermost leaves whorled or opposite; erect perennials, with entire leaves equal at base; stipules none; involucres mostly 5-lobed, in the forks of the branches and terminal; inflorescence umbelliform. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Flowers greenish, in a head or close cluster, surrounded by a large and showy, 4-leaved, corolla-like, white or rarely pinkish involucre; fruit bright red. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Fruit dry, twin, of 2 indehiscent 1-seeded carpels.—A slender procumbent herb, with square stems, lanceolate pungent leaves in whorls of 4–6, and small subsessile blue or pinkish flowers surrounded by a gamophyllous involucre. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Heads radiate or discoid, the involucre little or not at all imbricated, not scarious. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scales of the involucre herbaceous, equal, in about 2 rows. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z B. Glands of the involucre without petaloid appendages. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scales of the hemispherical involucre imbricated somewhat in 2 rows, appressed, with narrow membranaceous margins. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scales of the involucre more or less imbricated, usually with herbaceous or leaf-like tips. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scales of the bell-shaped involucre ovate or lanceolate, pointed, loosely imbricated in 2 or 3 rows. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scape 1° high, from a thickened caudex, leaves lanceolate, elongated, tapering to a sharp point, entire, woolly on the margins; scales of the involucre lanceolate, sharp-pointed, achene beakless.—Prairies, The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Stipules often present.—A vast family in the warmer parts of the world; most numerously represented in northern countries by the genus Euphorbia, which has very reduced flowers within a calyx-like involucre. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Smooth, or at first pubescent; outer involucre reflexed. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scales of the campanulate involucre in 2 or 3 rows, nearly equal, linear, the outer foliaceous and loose; pappus copious, very soft; rays very short or without ligules; low annuals with numerous rather small heads. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z A form with the rays minute, scarcely exceeding the involucre, occurs in S. New England. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z July–Sept.—Rays, if any, smaller than in n. 4, and the outer involucre more leaf-like. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Leaves opposite, on short petioles, not oblique, with stipular glands; stems dichotomously branched, erect; cymes terminal; involucres with 5 glands; seeds tuberculate. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scales of the globular involucre fringe-margined; false rays large; pappus very short; leaves linear, entire, or toothed at the base; root annual.—Roadsides, escaped from gardens. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scales of the cylindrical involucre 8, erect, in one row. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Stylopodium conical.—Smooth perennials, from large aromatic roots, with large ternately compound leaves, mostly no involucre, involucels of narrow bractlets, and white flowers in large many-rayed umbels. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Fruit oblong to ovate, glabrous, with slender equal ribs, numerous oil-tubes, and depressed or cushion-like stylopodium.—Glabrous perennials, with ternately or pinnately compound leaves, involucre and involucels scanty or none, and white or yellow flowers. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Achene lenticular or triangular, naked at the apex.—Culms mostly triangular, simple, leafy at base, and with one or more leaves at the summit, forming an involucre to the umbel or head. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Heads spicate or racemose, the involucre well imbricated. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scales of the involucre narrower and less rigid, oblong, often ciliate.—Wet pine barrens, N. J., and southward. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z Scales of the globular involucre appendaged, and with a black pectinately ciliate fringe; rays wanting; pappus very short; leaves lanceolate, entire, or the lower lyrate-toothed, rough; root perennial.—Waste places, E. New Eng. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z |
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