I 4 



218 



CONTRTBIJTTONS FEOM THE NATIONAL HERBAKTUM. 



/ 



long, yellow; pedicel 2 mm. long; bracts and bractcoles very minute; calyx cam- 

 panulate, glabrous, 4 mm. deep; teeth deltoid, shorter than the tube; corolla 1 to 1.2 

 cm. long; standard glabrous on the back; pod 3.7 to 5 cm, long, sliglitly recurved, 

 glal)rcscent or thinly silky. 



Near Bayamou in grassy plains; near Patillas in coast districts at Our'daraya; near 

 Sabana Grande, on llu^ bank of Estero River; near Salinas do Tabo Rojo at Los Morillos; 

 near ilayaguez; in coast districts at Algarrobo; near Manali in meadows near the sea- 

 shore.— Bermuda (Tb'msb'y), Cuba, Jamaica, Cayman (Hitchcock), Haiti, St. Thomas, 

 St. (/roix, St. John (Eggrrs), Antigua (Griscbach), Guadeloupe, St. Vincc^nt, Bequia 

 (Kew Bull. No. 81, ]>. 247), Barbados, Grenada, Tobago, This species is common 

 from temperat(^ North Ami^rica to Argentina. Tropical and south Africa, tropical 

 Asia, and Australia. 



3. Vigna unguiculata (L.) Walp. 



(Urban, :JI1.) 



St'ems annual, twining, subglabrous; stipules t>vate-lanceolate, flubpeltate, 0.8 to 

 1.2 cm. deep; petioles 5 to 15 cm. long, glabrous; leaflets 3, tlie central one roundish or . 

 ovate, 7,5 to 15 cm. long, acute, the base rounded; petiolule 2.5 to 5 cm. long, lateral 

 ones often unequal-sided, both sides glabrous; flowers in 6 to 12-flowcrcd racemes on 

 glabrous peduncles 15 to 30 cm, long; bracts like the stipules; pedicels very ghort; 

 (talyx glabrous, 4 nun. deep; teeth deltoi<l, acniminate, shorter than the tube, the two 

 ui)p(T ones connate; corolla yellow or nvldish, 2.5 cm. deep. 



Cultivated near Ya1>ucoa, at Guayavote, and near :Mayaguez. Universally culti- 

 vated throughout tin* Tropics. 



Two varieties occur, one with lilac flowers aiul yellow seeds spotted with red. ihe 

 other with yellow standard, purplish wliiLe wings, and white or pale yellow seeds 

 which are brown at the hibim. 



The pods and seeds are (nil en and th<^ fibers of the long peduncles ar(^ used for ropes, 

 nets, and cloths. 

 Ijocal names, /n^'nZr.s^ hntrjas. 



66. PACHYRHIZUS Rich, 



Caeara Rumph.; Thou. Diet, Sc, Nat. 6: 35. 1800. 

 PachyrhizHS Rich.; DC. Mem. Legum. 379. 1825, 

 Taeniocarpitm Desv. Ann. Sc. Nat. 9: 420. 1826. 



Calyx campanulate, the two upper teeth subconnate, the others equal, lanceolate; 

 standard broadly obovate, appendiculate at the ba.se with inflexed auricles; wings 

 obh)ng, falcate; keel incurved, obtuse, equaling the wings; stamens diadulphous or 

 monadelphous; ovary subsessile, multioAulate; style moderately thick, the apex 

 pubinvolute, flattened on the inner side; stigma subglobose, oblique; pod linear, 

 subcompressed, depressed transversely betw^een the seeds and septate within, 2- 

 valved.— Herbs, twining; leaves pinnate; leaflets 3, usually more or b^ss sinuate- 

 dentate, stipellate; flowci's in elongated, sometimes panicled axillary racemes; bracts 

 and bracteoles minute, setaceous, decidiKJus. 



KEY TO TUl': HI'^lMKR. 



Root a turnip-like tuber; corolla blue; pod 15 to 22.5 c^m. long. 

 Root of long cord-lik<^ fibt^rs bearing a succession of tubcTs; flow^ers 

 white; pod 20 to 30 cm. long. 



P. erosu,*^ 



r, iuherosus 



