特徵描述
作者
HUANG, Tseng-Chieng, HSIEH, Tsung-Hsin and CHENG, Wu-Tsang
型態特徵
Herbs or subshrubs, annual or perennial, usually aromatic. Stems and branches usually quadrangular. Leaves opposite, rarely whorled or alternate, simple, trifoliolate, pinnatifid or pinnate, without stipules. Inflorescences in dichasial, scorpioid, corymbose scorpioid, verticillate, or corymbose or racemose cymes or thyrses, terminal or axillary. Flowers bisexual, irregular, rarely regular. Calyx persistent, campanulate, tubular or urceolate, 5-toothed or rarely 10-toothed, 2-lipped or regular; tube sometimes hairy annulate inside. Corolla sympetalous, tubular, often bilabiate, 4- or 5-lobed, upper lip entire, bifid or deeply lobed, lower lip 3-lobed, central lobe large; stamens 2 or 4, borne on the corolla-tube or throat, filaments flattened, glabrous or hairy, anthers 2- or 1-celled, parallel or divergent, dehiscing lengthwise; ovary superior, 2-carpellate, each carpel deeply 2-lobed; style solitary, mostly unequally bifid; stigma minute; ovules 4, erect. Fruits usually 4 nutlets, enclosed in persistent calyx.
屬
About 220 genera and 3,500 species distributed worldwide, mainly in the Mediterranean region and SW Asia; 36 genera and 73 species in Taiwan.
參考文獻
- HUANG, Tseng-Chieng, HSIEH, Tsung-Hsin and CHENG, Wu-Tsang, Flora of Taiwan, second edition 4: 432. 1998. (Fl. Taiwan 2nd edit.)
- Wu, C. Y. and H. W. Li., Flora Reipublicae Popularis Sinicae 65(2): 124-248. 1977. (Fl. Reip. Pop. Sin.)
- Murata, J. and T. Yamazaki., Flora of Japan 3: 272-321. 1993. (Fl. Jap.)
- Hsieh, T. H. and T. C. Huang., Taiwania 43(1): 38-58. 1998.
- Huang, T. C., SMC Pulb. Inc. Taipei 365-378. 1997.
Leonurus 益母草屬
作者
HUANG, Tseng-Chieng, HSIEH, Tsung-Hsin and CHENG, Wu-Tsang
型態特徵
Herbs, erect, covered with septate hairs; stems square. Leaves petiolate; blades ovate to broadly ovate, margins coarsely serrate and incised or pinnately parted on lower stem. Inflorescences axillary, verticillate. Flowers sessile or nearly so; calyx campanulate or tubular, 5-nerved, 5-toothed, teeth nearly equal, ascending, awn-tipped; corolla tubular, tube short, limb bilabiate, upper lip nearly erect, entire, white, villous on back, lower lip spreading, 3-lobed; stamens 4, didynamous, anthers 2-celled, parallel, glabrous. Nutlets trigonous, truncate, smooth or minutely hairy.
