| 单词 | Cycas |
| 例句 | In its native Japan, Cycas revoluta is believed to be pollinated by beetles. Global heating: ancient plants set to reproduce in UK after 60m years 2019-08-22T04:00:00Z Varieties include Euphorbia, Cycas , Haworthia hybrids, Ariocarpus, Mammillaria, and South American cacti such as Copiapoa as well as crested and mutant forms of cactus and succulents. Gardening datebook: Conventions about cactus, fruit trees and bewitching begonias 2019-07-25T04:00:00Z The climbing species of Gnetum are characterized by the production of several concentric cylinders of secondary wood and bast, the additional cambium-rings being products of the pericycle, as in Cycas and Macrozamia. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z In Cycas the altered leaf, upon the margin of which the ovule is produced, and the peltate scales, from which they are pendulous in Zamia, are regarded by all botanists as carpellary leaves. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z In Cycas the large naked ovules are borne on the margins or lobes of an obvious open leaf. The Elements of Botany For Beginners and For Schools Cycas circinalis.—A native of Malabar, where a kind of sago is prepared from the seeds, which are dried and powdered; medicinal properties are also attributed to the seeds. Catalogue of Economic Plants in the Collection of the U. S. Department of Agriculture From the nuts of the Cycas circinalis, the Singalese prepare an inferior kind of starch, by pounding the fresh kernels. The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c. Dioecious; flowers in the form of cones, except the female flowers of Cycas, which consist of a rosette of leaf-like carpels at the apex of the stem. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z In Cycas the carpels are ordinary leaves, with ovules upon their margin. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z On the farther side of this water, small trees of Cycas first make their appearance, but we had no time now or rather then to examine any thing. Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries Cycas may also be regarded as a palm. Manual of Gardening (Second Edition) From the soft stems of Cycas revoluta and C. circinalis, natives of China and the East Indies, a kind of sago is made. The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c. In Cycas the stem apex, after producing a cluster of carpellary leaves, continues to elongate and produces more bud-scales, which are afterwards pushed aside as a fresh crown of fronds is developed. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z After the mangrove the most common trees round Keppel Bay are the eucalyptus and a species of Cycas bearing poisonous nuts. The Logbooks of the Lady Nelson With the journal of her first commander Lieutenant James Grant The hills above this, as well as between this and Ameengong, abound with Cycas, many of which were once dichotomous; on these hills a fleshy Euphorbia likewise occurs, a sure indication of barren soil. Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries It is collected, however, in the Indian Archipelago, as an article of trade, from the trunks of the Cycas revoluta, the Phoenix farinifera, the Corypha umbraculifera, and the Caryota urens. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 3 From the soft stem of Cycas circinalis, a kind of sago is produced in the East and West Indies. The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c. The male flower of Cycas conforms to the type of structure characteristic of the cycads, and consists of a long cone of numerous sporophylls bearing many oval pollen-sacs on their lower faces. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z With Cycas pectinata the cotyledons are hypogean, and a true leaf first breaks through the ground with its petiole forming an arch. The Power of Movement in Plants At Cycas Creek, Spoonbills, Ibises, and Whistling ducks came at night fall to the fresh water, and left it in the morning. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 Many silicified trunks of coniferous trees, and the remains of plants allied to Zamia and Cycas, are buried in this dirt-bed, and must have become fossil on the spots where they grew. The Student's Elements of Geology But I have two questions to ask: the Cycas observed was a huge seed in a broad and very shallow pot with cocoa-nut fibre as I suppose. Life and Letters of Charles Darwin — Volume 2 One of the most important discoveries made during the latter part of the 19th century was that by Ikeno, a Japanese botanist, who first demonstrated the existence of motile male cells in the genus Cycas. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z In all the genera, except Cycas itself, the female fructifications are likewise cones, each carpel bearing two ovules on its margin. Darwin and Modern Science The Cycas disappeared as we receded from the river. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 With the exception of Cycas, the female flowers are also in the form of cones, bearing numerous carpellary scales. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z At the left side of the river, we saw four or five fine Cycas palms, from eight to ten feet high, and the stem from six to nine inches in diameter. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 He drew attention also to certain structural similarities between Cycas and Ginkgo. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z We passed through tea-tree forest, and a succession of Cycas groves, and came out into plains, and to the heads of sandy creeks with tea-tree shrubs and Salicornia. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 We found here the carcase of a crocodile; and the skull of another was found near our camp at Cycas Creek. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 Its banks were covered with a close forest of Cycas palms. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 The Cycas disappeared where the fresh water commenced; and it seemed to be confined to the sandy soil near the salt water. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 In an old stem of Cycas, Encephalartos or Macrozamia the secondary wood consists of several rather unevenly concentric zones, while in some other genera it forms a continuous mass as in conifers and normal dicotyledons. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z |
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