特徵描述
作者
KAO, MUH-TSUEN
型態特徵
Perennial or annual herbs, rarely suffrutescent, caulescent or acaulescent; roots often thick,tuberous or fusiform; stems erect or creeping, usually fistulose or solid. Leaves alternate, simple or prominently divided and compound, the upper petioles frequently embracing young inflorescence with a dilated sheath-like base. Flowers yellow, white, pink, purplish or violet, bisexual or polygamous, in simple or compound umbels, sometimes capitate; calyx 5-toothed; petals 5, valvate or slightly imbricate in bud, free, deciduous, often incurved at apex; stamens 5, alternate with petals. the filaments filiform, incurved in bud; ovary inferior, bilocular; styles 2, often accrescent, usually with stylopodium; ovules solitary in each cell, pendulous. Fruit a schizocarp, bilocular, separating into 2 carpels (mericarps), these usually suspended from the top of the central column called carpophore, with 5 primary ribs and sometimes 4 intermediate or secondary ones; vittae (oil-tubes) often present; seeds with abundant endosperm and a small embryo.
屬
About 200 genera and 3,000 species distributed in the whole world. sixteen genera, about 29 species and two varieties in Taiwan.
參考文獻
- KAO, MUH-TSUEN, Flora of Taiwan, second edition 3: 1010. . (Fl. Taiwan 2nd edit.)
- Hiroe, M., 1-219. 1958.
- Ohwi, J., 667-686. 1965.
- Walker, E. H., Fl. Okinawa and southern Ryukyu Is. 789-799. 1976.
Osmorhiza 臭根屬
作者
KAO, MUH-TSUEN
型態特徵
Somewhat pilose perennial herbs. Leaves petiolate, triternate; leaflets serrate to pinnatifid; petioles sheathing at base. Umbels compound, very lax; involucres and involucels small, foliaceous or wanting; rays few, slender, ascending to divaricate and reflexed, unequal. Flowers white, purple, greenish-yellow; calyx-teeth obsolete; petals obovate or oblong, with a narrow inflexed apex; styles slender to obsolete, the stylopodium conical; carpophore 2-cleft to less than one half of its length. Fruit linear to oblong, cylindric to clavate, long-attenuate at base, laterally compressed, bristly hispid to glabrous, the ribs filiform, acute, often bristly; vittae obscure or wanting; seeds subterete, the inner face grooved.
