Commelinaceae
鴨跖草科
特徵描述
作者
WANG, Jenn-Che, CHEN, Yo-Jiun, and PENG, Ching-I
型態特徵
Annual or perennial herbs, sometimes with stolons. Stems erect, ascending or decumbent. Leaves linear, lanceolate or ovate; sheath cylindrical. Prophyll sheathing, membranaceous, at base of branches. Inflorescence terminal, rarely axillary, a cincinnus, drepanium, thyrse or flower solitary. Flowers bisexual, or staminate, actinomorphic or zygomorphic, trimerous; sepals 3, green, persistent; petals 3, white, blue or purple, free or fused basally; stamens 6, all alike or heteromorphic with 2-3 fertile stamens and 3-4 staminodes, filaments glabrous or barbate; ovary superior, locules 1 or 2, style glabrous or barbate. Fruit a capsule, dehiscent, rarely indehiscent. Seeds uniseriate, rarely biseriate, embryostega lateral, semilateral, dorsal or apical, hilum punctiform or linear.
屬
About 40 genera with ca. 650 species, in warm regions. Eight genera with 19 species in Taiwan.
參考文獻
- WANG, Jenn-Che, CHEN, Yo-Jiun, and PENG, Ching-I. 2000. Flora of Taiwan, second edition 5: 153. (Fl. Taiwan 2nd edit.)
- Hong, D. Y. 1974. Acta phytotaxonomica sinica eng 12(4): 459-488. (Acta Phytotax. Sin.)
- Hong, D. Y. 1997. Flora Reipublicae Popularis Sinicae 13(3): 69-133. (Fl. Reip. Pop. Sin.)
Belosynapsis 假紫萬年青屬
作者
WANG, Jenn-Che, CHEN, Yo-Jiun, and PENG, Ching-I
型態特徵
Perennial herbs, green or purple. Stems procumbent, branched, rooting at nodes. Leaves sessile, arranged nearly on same plane, ellipsoid-ovate, succulent; sheath cylindrical. Inflorescence terminal, a cincinnus enclosed in biseriate bracteoles, or flowers solitary; bract and bracteoles isophenous, margins ciliate, elliptic-ovate. Flower bisexual, actinomorphic; sepals 3, free, greenish, persistent, boat-shaped, lanceolate; petals 3, free, pink purple, with white streak in middle, obovate, apex acute, base cuneate; stamens 6, equal; anthers trapezoid; filaments barbate, hairs moniliform, white or blue; ovary ellipsoid, 3-angled, apex hispid; style barbate. Capsules 3-valved, ellipsoid, apex hispid. Seeds 2 per locule, uniseriate, trapezoid or ellipsoid, embryostega apical, hilum punctiform.
About five species, Southern Asia to Papua New Guinea; two species in Taiwan.
