All Floras      Advanced Search
FOC Vol. 10 Page 2, 196, 227 Login | eFloras Home | Help
FOC | Family List | FOC Vol. 10 | Fabaceae

93. Dunbaria Wight & Arnott, Prodr. Fl. Ind. Orient. 258. 1834.

野扁豆属 ye bian dou shu

Authors: Ren Sa & Michael G. Gilbert

Herbs or woody vines, prostrate or twining. Leaves pinnately 3-foliolate; stipules caducous or absent; stipels usually absent; leaflets with obvious sessile glands abaxially. Inflorescence axillary, 1-flowered to racemose. Bracts caducous or absent; bracteoles usually absent. Calyx campanulate; lobes lanceolate or triangular, lowest one longest. Corolla ± longer than calyx; standard almost circular, obovate or transversely elliptic, base with auricles; wings usually with auricles; keels shorter than wings, slightly curved. Stamens diadelphous; vexillary stamen free; anthers uniform. Ovary stipitate or sessile; ovules many; style filiform, introrse, gla­brous; stigma small, terminal, capitate. Legume linear or linear-oblong, dehiscent. Seed hilum long or short; strophiole thin and small.

About 20 species: Asia, Oceania; eight species in China.

Dunbaria was revised by Maesen (Wageningen Agric. Univ. Pap. 98(1). 1998).

Dunbaria merrillii Elmer (usually treated as a synonym of D. cumingiana Bentham), otherwise known from Indonesia and the Philippines, was recorded from Taiwan (Lan Yu) (Fl. Taiwan, ed. 2, 3: 275, t. 134. 1993). However, the illustration provided is more suggestive of a species of Cajanus as it shows a large legume, 10-12 cm, distinctly constricted between the seeds, and twisted after dehiscence.

1 Terminal leaflet usually ca. 2 × as long as wide; ovary and legume sessile or subsessile   (2)
+ Terminal leaflet usually about as long as wide; ovary and legume sessile, subsessile, or stipitate   (3)
2 (1) Leaflets ovate, ovate-lanceolate, or lanceolate, 5-9.5 × 2.5-4 cm; flowers in extended racemelike inflorescence, purple.   1 D. fusca
+ Leaflets elliptic, ovate-elliptic, or oblong, 1.6-2.6 × 0.5-0.7 cm; flowers solitary, yellow.   2 D. debilis
3 (1) Ovary sessile; legume stipe absent or extremely short   (4)
+ Ovary stipitate; legume stipe more than 6 mm   (6)
4 (3) Terminal leaflet more than 5 cm, abaxial surface and legume tomentose; inflorescence a long, robust, many-flowered raceme; flowers purple.   3 D. incana
+ Terminal leaflet 1.5-4 cm, abaxial surface and legume glabrous or sparsely pubescent; inflorescence a 1- to few-flowered fascicle or short raceme; flowers yellow   (5)
5 (4) Terminal leaflet orbicular-rhomboid; inflorescence a 1- or 2-flowered fascicle.   4 D. rotundifolia
+ Terminal leaflet rhomboid or almost triangular; inflorescence a short raceme, few flowered.   5 D. villosa
6 (3) Terminal leaflet obtriangular or obovate, both leaf surfaces and legume sparsely pubescent or glabrous; legume stipe 6-10 mm.   8 D. truncata
+ Terminal leaflet almost rhomboid or ovate-rhomboid; legume stipe 15-20 mm   (7)
7 (6) Terminal leaflet usually 1.8-4 cm long and wide, apex acute, both leaf surfaces and legume densely grayish pubescent; legume stipe 15-17 mm.   6 D. podocarpa
+ Terminal leaflet usually 5-6 cm long and wide, apex acuminate, both leaf surfaces and legume sparsely pubescent or glabrous; legume stipe ca. 20 mm.   7 D. circinalis

Lower Taxa


Related Objects  
  • Dunbaria (PDF)
  • PDF

    Flora of China @
    Browse by
    Advanced Search

    Flora of China Home




     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |