| 单词 | Trifolium |
| 例句 | A species of clover with pinkish or white flowers; Trifolium hybridum. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z In the western counties of England, and generally by agriculturists, the name honeysuckle is applied to the meadow clover, Trifolium pratense. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 6 "Home, Daniel" to "Hortensius, Quintus" 2012-03-15T02:00:32.250Z The Scilly Islands own certain plants peculiar to them; thus, Trifolium repens, var. Cornwall 2011-12-05T03:00:38.530Z There seem to be usually two broods and the caterpillars live upon leguminous plants, especially alfalfa, buffalo clovers, wild senna, and other species of Trifolium and Cassia. Butterflies Worth Knowing 2011-08-10T02:00:15.887Z Dutch Clover, Trifolium repens, commonly called white clover, a valuable pasture plant. The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde 2011-04-14T02:00:57.977Z He added that while some people call other plants shamrock, the “official” version is a plant called Trifolium dubium, a type of clover found on “unimproved grassland,” which is rapidly disappearing from modern Ireland. Irish Celebrate Despite Shamrock Shortage 2010-03-17T23:30:00Z Heads loosely flowered; flowers usually 10 or fewer; upper petal scarcely striate or not at all Hop Clover, Trifolium dubium. 34a. The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State His "green" was a bit of the small variety of the common clover, Trifolium repens, which, of course, produces the usual tuft of florets or clover-head. More Science From an Easy Chair As we stood there, with the sea lashing the shingly beach and hammering the rocks, Wheeler, chief officer of that station, recalled the story of the wreck of the Trifolium, a Swedish sailing ship. Some Naval Yarns I have met with instances of this kind in the common white clover, Trifolium repens, where on each side of the base of the petiole the stipules had the form just indicated. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Definition of Clover.—According to Johnson's Encyclopædia, clover or trefoil is a plant of the genus Trifolium and the family Leguminosæ. Clovers and How to Grow Them For the growth of cereals these calcareous soils need a certain proportion of silica, and where they have this we see some of the finest crops of Wheat, Trifolium, Peas and Beans in these islands. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition "I know it," calmly said Wilson, running his hand over the turf, "but I'm curious to know what kind of Trifolium this is." John Henry Smith A Humorous Romance of Outdoor Life Buffalo Clover is a kind similar to Trifolium agrarium and Trifolium repens, and appears to me to be a hybrid plant. The Botanist's Companion, Volume II I have also met with it in Trifolium repens, in the umbellate variety of the common primrose, and in the scarlet geranium. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants The Standard Dictionary defines it as any one of several species of plants of the genus Trifolium of the bean family Leguminosæ. Clovers and How to Grow Them Turnip, Common 2 to 3" Trifolium 16 to 20" Agrostemma.—A hardy annual that is very pretty when in flower; suitable for borders. Gardening for the Million "But my dear Harding," interposed Wilson, his mobile face wrinkled in a smile, "Trifolium is not a golf term and has nothing whatever to do with the game." John Henry Smith A Humorous Romance of Outdoor Life It is a circumstance worthy notice, that the very exact character of the Trifolium medium should thus be said to belong to the supposed variety of red Clover. The Botanist's Companion, Volume II This takes place sometimes in Leguminosæ, and seems to have been more frequently met with in Trifolium repens than in other plants. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants This variety, said to be perennial in its habit of growth, is probably the same as Trifolium reflexum, said to be biennial in Kansas. Clovers and How to Grow Them In like manner certain members of the clover group--red, white, yellow, etc., make up the genus Trifolium. The Fern Lover's Companion A Guide for the Northeastern States and Canada "Trifolium is the genus name for the clover plant, and these are beautiful specimens," explained this amateur botanist. John Henry Smith A Humorous Romance of Outdoor Life Trifolium officinale.—This plant when eaten by cows communicates a disagreeable taste to milk and butter. The Botanist's Companion, Volume II A division of the individual carpels occurs very frequently when those organs become more or less leafy, as in Trifolium repens, and other plants to be hereafter mentioned. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Because of this, the author has ventured to designate it Trifolium magnum. Clovers and How to Grow Them The flax-fields in bloom were sheets of the tenderest blue, and those of the Trifolium incarnatum red as blood, and the road was like a white ribbon binding together a variegated wreath. Castles and Cave Dwellings of Europe "Well, let's see how far you 'can knock that ball out of that bed of Trifoliums." John Henry Smith A Humorous Romance of Outdoor Life These are plentifully spread over the cutting; but the Trifolium arvense, which came for a few years, seems to have vanished again. John Keble's Parishes Detachment of this kind occurs not unfrequently, as in Primula vulgaris, Trifolium repens, &c. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants It has also been classified, and with no little appropriateness, Trifolium pratense perenne, which has reference to the mildly perennial habit of growth in this plant. Clovers and How to Grow Them The split seeds also of the Trifolium and celery acted powerfully and quickly, though the whole seeds caused, as we have seen, very little secretion, and only after a long interval of time. Insectivorous Plants One species of Melilotus sleeps like a Trifolium, and therefore very differently from its congeners; so does one species of Cassia. The Power of Movement in Plants I noticed in 1861 exactly the same fact with Trifolium pratense. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Caspary, in an elaborate paper on phyllomorphy occurring in Trifolium repens, figures foliaceous ovules springing from the edge of an open, leafy carpel. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants The biological meaning of the curious structure of the leaves of Trifolium resupinatum remains a riddle. More Letters of Charles Darwin — Volume 2 Most of these seeds did not excite any secretion until 48 hrs. had elapsed, and in the case of the Trifolium only one seed acted, and this not until the third day. Insectivorous Plants The cotyledons of some species of Trifolium are provided with a pulvinus, and others are destitute of one, and so it is with the leaves in the genus Sida. The Power of Movement in Plants Moreover, there is one species, M. messanensis, the leaves of which, on full-grown plants between 2 and 3 feet in height, sleep like the foregoing small leaves and like those of a Trifolium. The Power of Movement in Plants Hence it sleeps like the terminal leaflet of a mature plant, as was observed in 15 species, and wholly unlike the corresponding leaflet of Trifolium, which simply bends upwards. The Power of Movement in Plants You sent me seeds of Trifolium resupinatum, and I have raised plants, and some former observations which I did not dare to trust have proved accurate. More Letters of Charles Darwin — Volume 2 In Trifolium the first leaf generally bears only a single leaflet instead of three, and this differs somewhat in shape from the corresponding leaflet on the older leaves. The Power of Movement in Plants We shall however, give one good instance in the following section, in the case of Trifolium subterraneum, and probably in that of Arachis hypogaea. The Power of Movement in Plants The genus Melilotus is closely allied to Trifolium, and the first leaf bears only a single leaflet, which at night rotates on its axis so as to present one lateral edge to the zenith. The Power of Movement in Plants Trifolium repens: A, leaf during the day; B, leaf asleep at night. ing and bends over until it rests on and forms a roof over the edges of the now vertical and united lateral leaflets. The Power of Movement in Plants Many thanks for seeds of Trifolium resupinatum, which are invaluable to us. More Letters of Charles Darwin — Volume 2 Trifolium is a natural genus, and the leaves of all * Pfeffer, 'Die Period. The Power of Movement in Plants Trifolium subterraneum: downward movement of peduncle from 19o beneath the horizon to a nearly vertically dependent position, traced from 11 A.M. The Power of Movement in Plants Trifolium repens.—In many, but not in all the species of Trifolium, as the separate little flowers wither, the sub-peduncles bend downwards, so as to depend parallel to the upper part of the main peduncle. The Power of Movement in Plants This movement is the same as that of the terminal leaflet of the tripartite leaves of many species of Trifolium. The Power of Movement in Plants Trifolium strictum: diurnal and nocturnal positions of the two cotyledons and of the first leaf. The Power of Movement in Plants Trifolium strictum.—On the first day after germination the cotyledons, which are provided with a pulvinus, stood at noon horizontally, and at night rose to only about 45o above the horizon. The Power of Movement in Plants It may be added that some leaflets of Trifolium pratense were pinned open during 10 days, and on the first evening after being released they rose up and slept in the usual manner. The Power of Movement in Plants Trifolium repens.—A stem was secured close to the base of a moderately old leaf, and the movement of the terminal leaflet was observed during two days. The Power of Movement in Plants Trifolium subterraneum.—A petiole was secured close to the base of the three leaflets, and the movement of the terminal leaflet was traced during 26 ½ h., as shown in the figure on the next page. The Power of Movement in Plants |
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