Vigna LEGUMINOS.E 69 



Stem twining, pubescent, at length glabrous. Leaflets 2-5 cm. 1. 

 Racemes 2-6 cm. 1., peduncles 1-2 dm. 1. and sometimes much longer ; 

 pedicels very short. Bracts and bracteoles oblong-elliptical, ribbed, 

 deciduous ; bracts 1"5 mm. 1., bracteoles 3 mm. 1. Calyx 4 mm. 1. ; teeth 

 ciliate, upper tooth rounded, emarginate, lower teeth ovate, apex rounded 

 or obtuse. Corolla purple ; standard about 1'5 cm. 1., wings about 2 cm. 1., 

 keel somewhat in the form of the letter S. Pod 6-10 cm. 1. Seeds 

 brownish, about 2 mm. 1. 



3. V. antillana comb. nov. ; leaflets triangular to ovate- 

 oblong ; 'stipules sessile ; inflorescence a raceme with few clusters 

 of flowers distant on the rhachis near the apex of the peduncle ; 

 bracteoles much shorter than the calyx ; calyx 4-toothed, 

 lateral teeth lanceolate-falcate ; corolla 2-2 • 5 cm. 1 ; pod linear, 

 straightish, with thickened margins, to 5 mm. br. — Vigna 

 unguiculata Griseh. in Mem. Acad. Amer. Sc. & Art. n. ser. viii. 

 178 (1860) & Cat. Cub. 76 (non Walp.). V. sinensis Bolfe in 

 KeiD Bull. 1893, 247 (in part) {non Endl.). Phaseolus antillanus 

 Urb. Symb. Ant. iv. 309 (1905) & vi. 103. P. unguiculatus Piper 

 in Torreya xii. 190 (1912). 



C. V. Piper bases his name for the species on the supposed identity of 

 Linnffius's original specimen of Dolichos ungniculatus with the plant 

 described by Urban as Phaseolus antillanus, but there is no specimen so 

 named by Linnseus in his Herbarium, nor from the evidence of his own 

 lists does it appear that there ever was one. Further there is no specimen 

 that agrees with Phaseolus antillanus Urb. 



March (fide Urban). — Cuba, Hispaniola, Porto Rico, Martinique, 

 St. Vincent. 



Stem twining, with a length of over 20 ft., with few scattered hairs. 

 Leaflets, terminal triangular to ovate-oblong, acuminate, 5-7 cm. 1., lateral 

 very unequal-sided, obliquely ovate, base subtruncate, membranous, with 

 a few short hairs or subglabrous. Raceme about 1 dm. 1. ; peduncle 

 1-3 dm. 1. ; pedicels 1-2 mm. 1., in fr. to 4 mm. 1. Bracts minute, roundish, 

 1 mm. 1, Bracteoles elliptical, ribbed, about 3 mm. 1. Calyx : tube cam- 

 panulate, about 4 mm. 1. ; upper tooth short, truncate or scarcely emar- 

 ginate, lateral a little shorter than the tube, lower triangular, slightly 

 shorter than the lateral. Cwolla apparently purplish ; standard broadly 

 ovate, not or scarcely emarginate, about 2 cm. 1., and 1*7 cm. br. below ; 

 wings l*8-2*5 cm. 1. ; keel at J of its length, 5-7 mm. br. and then bent 

 at right angles, above narrowing and forming a tube at the apex. Pod 

 8-13 cm. 1. Seedg brown with black markings, about 4 mm. 1. 



[PACHYRRHIZUS DC. 



Twining herbs. Leaves pinnately 3-foliolate. Flowers blue, 

 clustered-racemose. Calyx 4-lobed, lobes subequal, upper emar- 

 ginate. Standard roundish-obovate, auricled at the base. 

 Uppermost stamen free, the rest united. Style compressed above 

 and hairy ; stigma subglobose on the inner face. Pod compressed, 

 transversely impressed outside and with tissue inside between 

 the seeds. 



Species 3, of which two are widely dispersed in the tropics of 



