Chenopodiaceae

藜科

APG 4

Amaranthaceae 莧科

特徵描述

屬列表

標本列表

特徵描述

作者

LIU, HO-YIH

型態特徵

Annual or perennial herbs, sometimes shrubs or small trees. Stems often succulent or jointed, sometimes both. Leaves alternate or opposite, simple, usually exstipulate. Flowers small, actinomorphic, usually green, bisexual or unisexual, sometimes polygamous, usually wind pollinated, solitary or in small clusters in leaf axils or in axillary bracteate fascicles or panicles; perianth uniseriate, sometimes wanting; tepals mostly 5, free or connate at base or connate almost to apex; stamens usually as many as and opposite tepals, epitepalous; ovary superior or rarely half inferior, 2-5-carpellate, unilocular, with single ovule, styles 1-3, sometimes wanting, stigmas as many as carpels. Fruit a one-seeded utricle or rarely an achene; seeds with abundant perisperm, true endosperm absent.

屬

About 100 genera with about 1,400 species, mainly in the temperate and subtropical regions of both hemispheres; three genera with nine species in Taiwan.

參考文獻

LIU, HO-YIH, Flora of Taiwan, second edition 2: 382. 1996. (Fl. Taiwan 2nd edit.)
Kung, H.-W. and Tsien, C.-P., Flora Reipublicae Popularis Sinicae 25(2): 1-194. 1979. (Fl. Reip. Pop. Sin.)
Larsen, K., Flore du Cambodge, Laos, Viêtnam 24: 88-100. 1989.

Atriplex 濱藜屬

作者

LIU, HO-YIH

型態特徵

Annual or perennial herbs or shrubs. Leaves sessile or petiolate, alternate or lower ones opposite, usually mealy pubescent, margin entire or toothed. Inflorescence an axillary or terminal spike or panicle, or flowers solitary. Flowers unisexual, plants monoecious or dioecious; staminate flowers without bracts, tepals and stamens 3-5, ovary vestigal or absent; pistillate flowers subtended by 2 accrescent bracts, tepals absent or rarely present and then 3-5, stamens absent, ovary globose. stigmas 2. Fruit a utricle with membranaceous pericarp, enclosed by persistent bracts; seeds 1, usually vertical.