特徵描述
作者
LIU, HO-YIH
型態特徵
Annual or perennial herbs or subshrubs, often succulent. Leaves spirally arranged or sometimes opposite, simple, entire, exstipulate or replaced by hairs, spines, bristles or scales in the axils and interpreted as stipules. Inflorescence racemose or cymose, or flowers solitary. Flowers bisexual, self-pollinating, rarely unisexual, actinomorphic; sepals 2 or 3 or rarely many, free or shortly connate at base and confluent with petals and stamens; petals (2-)5(-12), imbricate or rarely connate at base; stamens as many as and opposite petals or rarely many, free or sometimes adnate to base of petals; ovary superior or half-inferior, with 2-5 carpels, unilocular or rarely 3 locular, placentation basal or free-central. Styles and stigmas 2-8, connate below. Fruit a circumcissile or loculicidal capsule, seeds many.
屬
Twenty-nine genera with about 450 species, mainly in the southern hemisphere; two genera with four species in Taiwan.
參考文獻
Portulaca 馬齒莧屬
作者
LIU, HO-YIH
型態特徵
Annual or perennial herbs, sometimes suffrutescent at base, glabrous or pilose, often with tufts of axillary hairs or scales interpreted as stipules. Leaves opposite or spirally arranged or frequently congested at summit of stem, petiolate or sessile. Flowers solitary and terminal or in terminal heads or racemes, sessile or pedicellate; sepals 2, persistent or caduous with petals; petals 4-6, connate at base; stamens 4-many, in 1 whorl; ovary half inferior, styles 2-18. Fruit a circumscissile capsule.
參考文獻
- LIU, HO-YIH, Flora of Taiwan, second edition 2: 335. 1996. (Fl. Taiwan 2nd edit.)
- Geesink, R., Blumea 17: 275-301. 1969.
