Apiaceae
繖形科
特徵描述
[ Umbelliferae 繖形科 ]
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. 1993. Flora of Taiwan, second edition 3: 1010. (Fl. Taiwan 2nd edit.)
- Hiroe, M. 1958. 1-219.
- Ohwi, J. 1965. 667-686.
- Walker, E. H. 1976. Fl. Okinawa and southern Ryukyu Is. 789-799.
Glehnia 濱防風屬
作者
KAO, MUH-TSUEN
型態特徵
Perennial, low-spreading or prostrate, pubescent, somewhat fleshy maritime herbs; with stout taproots. Leaves petiolate, ternate or ternate-pinnate, broadly ovate, pinnae usually deeply 3-lobed, oblong-obovate, the margins serrate; petioles sheathing. Umbels compound, terminal or axillary; involucres of a few narrow bracts or wanting; rays many, spreading; involucels with several linear-lanceolate bractlets. Flowers white; calyx-teeth minute; petals ovate-lanceolate or narrowly inflexed at apex; stylopodium wanting. Fruit ovoid-oblong, densely pubescent or glabrate, dorsally compressed, lateral and dorsal wings conspicuous, thickened at base. Vittae large, several in the interval, 2–6 on the commissure. Seeds flattened dorsally, the face concave.
A genus of one species found on the shores of the Pacific and in eastern Asia.
