Umbelliferae

繖形科

APG 4

Apiaceae 繖形科

特徵描述

屬列表

標本列表

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.

Angelica 當歸屬

作者

KAO, MUH-TSUEN

型態特徵

Perennial herbs; with stout taproots; stems stout, erect and tall, usually hollow, caulescent, glabrous to tomentose. Leaves petiolate, membranaceous to thick and subcoriaceous, ternately-pinnate or pinnately compound; pinnae serrate to lobed. Inflorescence of loose compound umbels; rays few to many; involucre small, entire. Flowers white, pink, purplish or violet; petals ovate to obovate, with a narrowly inflexed apex, glabrous to hirsute dorsally; calyx-teeth minute or obsolete. Fruit oblong-oval to orbicular, strongly flattened dorsally, pubescent or glabrous, the lateral ribs broadly thin or corky-winged, the dorsal ribs also prominent but not winged, those of the carpels separate; carpophore 2-cleft to the base. Vittae solitary or 2 in the interval, 2 to many on the commissure. Seeds strongly compressed dorsally, the inner face plane to concave.