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.
Peucedanum 前胡屬
作者
KAO, MUH-TSUEN
型態特徵
Perennial, glabrous or pubescent, stout or slender, caulescent herbs, with taproots. Leaves petiolate, ternately or pinnately compound, membranaceous or coriaceous; leaflets broad or narrow, serrate or dentate to lobed. Umbels compound; involucres wanting or few; rays few to many; involucels of few to numerous narrow entire bracteoles or wanting. Flowers polygamous, white or reddish; calyx-teeth prominent to obsolete; petals ovate to obovate with narrower inflexed apex, glabrous to pubescent, elliptic or oblong, the dorsal ribs filiform, not winged, the lateral usually winged. Vittae solitary to several in the interval, 2 to several on the commissure. Seeds much dorsally compressed, slightly concave to plane.
