|
|
|
117. Dendrolobium (Wight & Arnott) Bentham in Miquel, Pl. Jungh. 215, 216. 1852.
假木豆属 jia mu dou shu
Authors: Puhua Huang & Hiroyoshi Ohashi
Desmodium subg. Dendrolobium Wight & Arnott, Prodr. Fl. Ind. Orient. 223. 1834.
Shrubs or small trees. Leaves 3-foliolate or rarely 1-foliolate, stipulate and stipellate; leaflets entire or shallowly undulate, terminal leaflet larger than lateral ones, lateral leaflets often oblique at base. Inflorescences axillary, subumbellate or umbellate to shortly racemose, densely flowered; bracts scarious, striate. Calyx campanulate or tubular, 5-lobed; upper 2 lobes connate, appearing 4-lobed or minutely 2-toothed at apex; lower lobe longer than others. Corolla white or pale yellow; standard obovate, elliptic, or nearly orbicular, clawed, not auriculate; wings narrowly oblong, clawed, auriculate or not. Stamens monadelphous. Ovary sessile, (1 or)2-8-ovuled. Legume ± moniliform, 1-8-jointed, indehiscent when mature. Seed distinctly rim-arillate; cotyledons epigeous.
Eighteen species: tropical and subtropical Asia and Australia; five species (one endemic) in China.
|
|
|
|
| 1 |
Legume 1-jointed; terminal leaflet narrowly oblong to narrowly oblong-lanceolate, 2-5 × 0.9-1.9 cm. |
|
1 D. lanceolatum |
| + |
Legume 2-8-jointed; terminal leaflet usually elliptic-ovate to broadly elliptic-ovate, length:width ratio < 2:1 |
|
(2) |
| |
|
|
|
| 2 (1) |
Legume usually 2-jointed; terminal leaflet shorter than 3 cm; lateral veins 5-9 on each side of midvein and not reaching margin. |
|
2 D. dispermum |
| + |
Legume 3-8-jointed; terminal leaflet longer than 3 cm; lateral veins 7-17 on each side of midvein and reaching margin |
|
(3) |
| |
|
|
|
| 3 (2) |
Lower calyx lobes ca. as long as other lobes; terminal leaflet acute or obtuse at apex. |
|
4 D. umbellatum |
| + |
Lower calyx lobes longer than other lobes; terminal leaflet acuminate, rounded, or sometimes acute at apex |
|
(4) |
| |
|
|
|
| 4 (3) |
Young shoots sharply triangular; terminal leaflet narrowly obovate-elliptic, apex acuminate to long acuminate; umbels 20-30-flowered. |
|
3 D. triangulare |
| + |
Young shoots terete; terminal leaflet not as above; umbels 10-20-flowered |
|
(5) |
| |
|
|
|
| 5 (4) |
Terminal leaflet elliptic to orbicular or ovate to broadly ovate, lateral leaflets ± oblique at base; keel distinctly broader than wings. |
|
4 D. umbellatum |
| + |
Terminal leaflet rhombic or obovate, lateral leaflets usually distinctly oblique at base; keel slightly broader than wings. |
|
5 D. rugosum |
|
|
|
Lower Taxa
| Related Links (opens in a new window) |
|
Treatments in Other Floras @ www.efloras.org
Other Databases
|
|
|
|
|
|
|
|
|
