Introduction of Lauraceae

Catalog 1 Pinyin 2 Chinese name 3 Pinyin 4 Latin name 5 Description 6 FRPS 7 All genera 1 Pinyin

luó mò kē

2 Chinese name

Luosocarpaceae

3 Pinyin

luoshuke

4 Latin name

Asclepiadaceae

5 Description

Asclepiadaceae, Lauraceae. Asclepiadaceae, dicotyledonous plants, about 180 genera and 2200 species, distributed worldwide, but mainly in the tropics, about 45 genera and 245 species in China, all in the country, with the most abundant in the southwest and southeast, the fibers of some species are very useful, and some are used for ornamental purposes, while the hairs of some species can be used as stuffing. Herbs, vines, or shrubs, with latex; leaves opposite, sometimes whorled or alternate, estipulate; petiole usually with tufted glands at tip, rarely leafless; inflorescences variously cymose, sparsely racemose; flowers bisexual, neat, 5-numerous; calyx tube short, 5-lobed, lobes doubly capped in imbricate or valvate arrangement, usually with glands on inner surface; corolla sympetalous, variously shaped, apically 5-lobed, lobes imbricate or valvate arranged; corona usually present, composed of 5 free or basally connate lobes or scales, sometimes in two whorls, borne on corolla tube or on back of stamens or gynostegium, rarely reduced to 2 longitudinal hairs or verruculose protuberances; stamens 5, adhering to gynoecium into gynostegium; filaments connate into a densely glandular tube called a gynostegium or filaments free; anthers connate in a ring and ventrally adnate to dilated part of stigma base; connectives Apical part usually with broadly ovate and recurved diaphragm; pollen grains united, enclosed in a pliable membrane into a mass, called pollinia, usually tied to pollen glands by pollinia stalks, 2 or 4 pollinia per anther, or pollinia usually spoon-shaped, erect, with upper part of pollinia harboring tetrads of pollen, and with a stalk below the pollinia, and a viscid disk at base adhering to stigma, alternating with anthers Pollen carrier, rarely with 4 carriers adhering to a short column, with a ****similar carrier stalk and adhesive disk at base; disk absent; pistil composed of 2 separated carpels; styles 2, connate, stigma basally pentagonal, apically various; ovules numerous; fruit 2 follicles; seeds with seed hairs. This family is very similar to the Oleaceae, but it can be easily distinguished by its connate filaments, adhesive anthers to the stigma, and pollen masses. Our main genera are: Ceropegia, Cynanchum, Gymnema, Heterostemma, Hoya, Marsdenia, Periploca, Secamone, Toxocarpus, Tylophora, and so on.

6 Chinese Flora

63:249

7 All genera

Absolmsia...... Slippery Vine

Adelostemma.... Mammillaria

Asclepias...... Malvaceae

Belostemma..... Genus Arrow Yarrow Vine

Biondia........ Genus Qinling Vine

Brachystelma... Lungwort genus

Calotropis..... Cowcartia

Centrostemma... Bee-out genus

Ceropegia...... Chandelier genus