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103. Pueraria Candolle, Ann. Sci. Nat. (Paris). 4: 97. 1825.

葛属 ge shu

Authors: Delin Wu & Mats Thulin

Neustanthus Bentham.

Twining herbs or shrubs. Roots sometimes tuberous. Stipules sometimes produced below point of insertion. Leaves pinnately 3-foliolate; leaflets large, stipellate, ovate or rhomboid, entire or sinuately lobed. Inflorescences axillary, racemose or paniculate with an elongated peduncle, or several racemes aggregated at tip of branchlets. Bracts usually small or narrow, very caducous; bracteoles small, subpersistent or minute and caducous. Flowers blue or purplish, usually several flowers clustered at each node of rachis. Calyx campanulate, 2 upper teeth connate into entire or bifid lip. Corolla exceeding calyx; standard with 2 inflexed auricles; wings nar­rowly oblong or obovate-falcate, often adherent to middle of keel; keel sometimes beaked, subequal to wings. Vexillary stamen free at base, connate in middle with others, rarely quite free; anthers uniform. Ovary subsessile, many ovuled; style filiform, inflexed above; stigma small, capitate. Legumes linear or cylindric, continuous within or filled or septate between seeds. Seeds compressed, suborbicular or transversely oblong.

About 20 species: distributed in tropical and E Asia; ten species (three endemic) in China.

1 Stipules basifixed   (2)
+ Stipules dorsifixed   (5)
2 (1) Legumes ca. 4 mm wide, with 15-20 seeds; standard suborbicular.   1 P. phaseoloides
+ Legumes 6-12 mm wide, with 4-10 seeds; standard obovate   (3)
3 (2) Shrubs, erect or climbing; standard 5-8 mm.   2 P. stricta
+ Twining herbs; standard 12-14 mm   (4)
4 (3) Leaflets ovate or obliquely ovate, densely hirsute on both surfaces; corolla white; standard ca. 14 mm; legumes 5-8 cm × 6-8 mm.   3 P. peduncularis
+ Leaflets obovate, sparsely pubescent abaxially; corolla reddish; standard ca. 12 mm; legumes 7.5-12.5 cm × 6-12 mm.   4 P. wallichii
5 (1) Stipules not 2-lobed at base   (6)
+ Stipules 2-lobed at base, sagittate   (8)
6 (5) Lowest calyx lobe distinctly longer than lateral ones, acuminate; keel petals larger than wings.   5 P. montana
+ Lowest calyx lobe slightly longer than lateral ones, acute; keel petals equal to wings   (7)
7 (6) Leaflets to 14.5 × 12 cm, lateral ones entire; inflorescences to 17 cm, axis with retrorse hairs; keel petals not auriculate.   9 P. bouffordii
+ Leaflets to 8 × 6.5 cm, all 3-lobed; inflorescences to 48 cm, branched, axis without retrorse hairs; keel petals auriculate at base.   10 P. xyzhui
8 (5) Bracts longer than flower buds, hirsute; standard to 1.5 cm.   6 P. alopecuroides
+ Bracts shorter than flower buds, glabrous or thinly pubescent; standard over 1.8 cm   (9)
9 (8) Leaflets suborbicular, usually entire or lateral leaflets irregularly 5-7-lobed; calyx 11-15 mm.   7 P. calycina
+ Leaflets broadly ovate, 3-lobed or lateral leaflets 2-lobed; calyx 4-7 mm.   8 P. edulis

  • List of lower taxa


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