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.
Mesona 仙草屬
作者
HUANG, Tseng-Chieng, HSIEH, Tsung-Hsin and CHENG, Wu-Tsang
型態特徵
Herbs, erect or procumbent, covered with septate hairs. Leaves petiolate; blades elliptic to ovate, base cuneate, obtuse or subtruncate, apex acute, margins serrate. Inflorescences in verticillate cymes, forming loose terminal or axillary racemes. Flowers pedicellate; calyx campanulate, often persistent in fruit, tubular, bilabiate, lower lip ovate, entire, upper lip cymbiform, corolla tubular, bilabiate, upper lip 3-lobed, lower lip cymbiform, spreading; stamens 4, didynamous; stigma bifid. Nutlets obovoid, striate
