1897.] IX Prain — Some additional Leguminosa?. 425 



pods torulose when ripe, and is probably but another form of the variety. 

 Roxburgh received it through Buchanan- Hamilton from Nepal. 



This is the very puzzling crop, sometimes called Khasia Mung, but known to the 

 Khasias themselves as Rumbaija. It is certainly not a form of P. radiatus — the 

 true Mung, still less is it a form of P. Mungo — the Urd. It does not, however, in 

 the writer's opinion deserve to be considered a distinct species, the flowers and fruits 

 are so exactly those of typical climbing P. calcaratus. 



d. Var. gracilis Prain, Journ. As. Soc. Beng. Ixvi. 2. 50 ; stems very 

 slender twining, quite glabrous as are the leaves ; leaflets usually 

 narrower than in var. typica ; flowers and pods as in the type. 



Malay Peninsula; Perak, very common in open grassy places, 

 Kunstler 990! 1035! 2467! Wray 1756! Scortechini 1476! Pahang, 

 Ridley 1124! Pistrib. Sumatra (Forbes!) 



Phaseolus subvolubilis Ham. in Wall. Cat. 5605, referred at Kew by Mr. Baker 

 to P. Mungo happens in Herb. Calcutta to be P. calcaratus. 



14. Phaseolus fuscus Wall. 



This has a naked style with a capitate stigma, and therefore not only is not a 

 Phaseolus, but does not even belong to the subtribe Euphaseoleae. 



15. Phaseolus velutinus Grah. 



This species, placed in the same section as the preceding, has no better right 

 to be included in the genus Phaseolus ; quite as certainly it is not at all nearly 

 related to P. fuscus ; both are members of the tribe Phaseoleas ; there all com- 

 parison between them ends. The nearest ally of P. velutinus is Vigna lucens, Bak., 

 from which it is hardly distinguishable by foliage, by fruit, or by inflorescence, and 

 is only to be separated by its larger flowers. Mr. Kurz has already pointed out 

 that the two are unmistakeably congeneric ; he has, however, proposed to treat them 

 as Canavalias. They do, as to pods, a good deal resemble Canavalia, but their 

 stigmas being bearded differ so greatly that it is inconvenient to adopt Mr. Kurz's 

 proposal, and a preferable course is to treat this as the type of a distinct genus 

 which will include Vigna lucens as well. 



73 .* DYSOLOB1UM Prain. 

 (Phaseolus § Dysolobium Benth. PI. Jungh. 239, footnote.) 

 Twiners, usually woody, with 3-foliolate stipellate leaves. Flowers 

 in copious axillary racemes, bracteoles inconspicuous deciduous. Calyx 

 campanulate. the lower tooth lanceolate longer than the rest, but shorter 

 than the tube, the two uppermost connate. Corolla much exserted, keel 

 beaked and sometimes distinctly curved and laterally deflexed. Stamens 

 diadelphous ; anthers uniform. Ovary sessile many-ovuled, style filiform 

 bearded below the oblique stigma. Pod thick woody subterete oblono- 

 villous, very markedly septate, with double septa between the velvety 

 seeds. Species 4, Indian. 



This genus is made to comprise four undoubtedly congeneric forms, three of 

 which constitute the group Dysolobium founded by Bentham in 1851 (PL Jwngh. 239) 



