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.

Chenopodium 藜屬

作者

LIU, HO-YIH

型態特徵

Annual or perennial herbs or shrubs, often scented. Leaves petiolate, alternate, usually mealy pubescent, margin entire or toothed. Inflorescence an axillary or terminal fascicle, paniculate spikes. Flowers bisexual or sometimes pistillate, sessile, without bracts; tepals 5, free or shortly connate at base, keeled or winged; stamens mostly 5, ovary horizontally flattened, stigmas 2-5. Fruit a utricle with membraneous pericarp or rarely an achene; seeds 1, horizontal or vertical.