特徵描述
作者
HUANG, TSENG-CHIEN and OHASHI, HIROYOSHI
型態特徵
Herbs, shrubs, or trees. Leaves stipulate and usually alternate, pinnate or digitately compound, or simple, sometimes with the rachis ending in a tendril. Inflorescence variable, axillary, leaf-opposed or terminal, mostly pseudoracemose or panicled, bracts and bracteoles usually both present; flowers usually irregular, hermaphroditic, rarely regular or polygamous; sepals 4–5, connate or free, often unequal, sometimes combined into 2 lips; petals 5, rarely fewer by reduction, usually free and unequal; stamens normally 10, perigynous or hypogynous, rarely fewer or indefinite; filaments free or variously connate; anthers 2-celled, generally longitudinally dehiscent; ovary free; style simple, cylindrical, usually declinate, stigma capitate, terminal or oblique; ovules one or more on the ventral suture. Fruit usually a dry, dehiscent legume, typically dehiscent by one or both sutures into two valves, or indehiscent, sometimes jointed and separating into 1-seeded joints. Seeds usually exalbuminous; cotyledons foliaceous or amygdaloid, with a straight or inflexed acumbent radicle.
屬
Genera about 650, species over 18,000, cosmopolitan. About 60 genera and 170 species in Taiwan.
參考文獻
- Huang, S. F. & T. C. Huang, Taiwania 32(1): 11-118. 1987.
- Huang, T. C. et al., Taiwania 36(4): 318-395. 1992.
- Li, H. L., Livingston Publ. Comp. Pennsylvania 329-362. 1963.
- Liu, T. S, College of Agriculture, National Taiwan University, Taipei. 483-551. 1960.
- Ohashi, H. et al., The science reports of the Tohoku Imperial University. Fourth Series, Biology 277-334. 1984. (Sci. Rep. Tohoku Univ. 4. Biol.)
- Ohashi, H. et al., The science reports of the Tohoku Imperial University. Fourth Series, Biology 53-66. 1985. (Sci. Rep. Tohoku Univ. 4. Biol.)
- Ohashi, H. et al., The science reports of the Tohoku Imperial University. Fourth Series, Biology 191-248. 1988. (Sci. Rep. Tohoku Univ. 4. Biol.)
- Ohashi, H. et al., The science reports of the Tohoku Imperial University. Fourth Series, Biology 1-37. 1991. (Sci. Rep. Tohoku Univ. 4. Biol.)
- HUANG, TSENG-CHIEN and OHASHI, HIROYOSHI, Flora of Taiwan, second edition 3: 160. . (Fl. Taiwan 2nd edit.)
Desmodium 山螞蝗屬
作者
HUANG, TSENG-CHIEN and OHASHI, HIROYOSHI
型態特徵
Annual or perennial herbs, undershrubs or shrubs. Leaves usually palmately or trifoliolate or reduced to unifoliate, rarely pinnately 5-foliolate; stipules usually free, small, spinescent, linear or lanceolate, persistent; leaflets stipellate. Flowers small, in axillary and terminal pseudoracemes, often paniculately compounds; bracts 2, deciduous, sometimes large and foliaceous; calyx herbaceous, campanulate or turbinate, the teeth longer or shorter than the tube, the two upper teeth often subconnate; corolla exserted, white to purplish; standard broad, round to oblong, gradually narrow or spurred at the base, the wings more or less adhering to the keel, the keels usually obtuse, sometimes connate; stamens 10, diadelphous, rarely monadelphous; anthers all alike; ovary sessile or stipitate; style incurved; stigma minute, capitate; ovules 2 to many, rarely reduced to one. Pods flat, deeply lobed on one or both sides, and separating into two to many 1-seeded joints when mature; joints indehiscent or rarely dehiscent along ventral suture, mostly covered by minute hooked or sticky hairs.
