262 A FLORA OF MANILA 



In open grassy places opposite Guadalupe, fl. most of the year; widely, 

 distributed in the Philippines, undoubtedly introduced. A native Of tropical 

 Asia, now found in most warm countries, wild or cultivated. 



*7. P. RADI.4TUS L. Mungos (Tag.) ; Green Gram. 



An erect or climbing annual herb, branched from the base, or more or 

 less clothed with spreading, brownish hairs. Leaflets ov4te, entire, acu- 

 minate, 8 to 15 cm long, the lateral ones inequilateral. Flowers about 1 

 cm long, yellow, racemosely arranged near the ends of the short peduncles, 

 the pedicels very short. Pods linear, spreading, 6 to 8 cm long, about 6 

 mm wide, hirsute with scattered, long, brownish hairs. Seeds 4 to 6 mm 

 long. 



Rarely cultivated in our area, fl. Nov.-Jan., and probably in other 

 months; extensively cultivated in many parts of the Philippines, but scarce- 

 ly spontaneous. A native of the Old World, now cultivated in most warm 

 countries. 



54. VIGNA Savi 



Twining or spreading herbaceous vines similar to the preceding genus, 

 differing chiefly in having the keel not or but slightly curved and not 

 twisted. Calyx campanulate, the teeth long or short, the upper 2 often 

 connate. Corolla much-exserted; keel truncate or with an ascending or 

 slightly recurved beak. Stamens diadelphous. Ovary many-ovuled; style 

 bearded along one side below the stigma. Pods linear. (In honor of D. 

 Vigna, an early Italian botanist.) 



Species 40 to 50, chiefly tropical, 4 in the Philippines. 



1. Pods glabrous; keel not produced into a beak. 

 2. Pods very long, up to 60 cm in length; cultivated.... 1. V. sesquipedalis 

 2. Pods less than 7 cm long; a littoral species with yellow flowers. 



2. V. luteola 



1. Pods densely pilose; keel prolonged into a beak 3. V. pilosa 



*1. V. SESQUIPEDALIS L. Sitao (Tag.). ' 



An annual, scandent, herbaceous, nearly glabrous vine, the stipules about 

 1 cm long, attached above the middle. Leaflets ovate-rhomboid, acute, 

 entire or nearly so, 6 to 15 cm long, the nerves often purplish. Racemes 

 few, axillary, long-peduncled. Flowers 3 to 6, crowded at the ends of the 

 peduncles. Calyx greenish, 1 cm long, the teeth lanceolate, long-acuminate. 

 Corolla pale-purplish, usually about 2 cm long. Pods slender, usually 

 purplish, less than 1 cm wide, 20 to 40 cm long, many-seeded. (Fl. Filip. 

 pi. 286, 285, V. sinensis.) 



Commonly cultivated for its edible pods and beans, fl. all the year; 

 widely cultivated in the Philippines, but scarcely spontaneous, probably a 

 native of China. Cultivalad in most warm and tropical countries. 



2. V. lutea (Sw.) A. Gray. 



A prostrate or climbing herbaceous annual vine, glabrous throughout. 

 Leaves 3-foliolate, their petioles 5 to 10 cm long. Leaflets broadly ovate 

 to oblong-ovate, or suborbicular-ovate, shining, acute or rounded, 6 to 10 cm 

 long, stipellate. Scapes axillary, erect, 10 to 20 cm long, bearing numer- 

 ous, racemosely arranged flowers at the apex, but 2 or 3 flowers opening 

 at one time. Flowers yellow, 1.5 cm long, the standard suborbicular, 

 retuse, 1.8 cm wide. Pods subcylindric, 4 to 5 cm long, 6 to 7 mm wide, 

 reflexed, each containing from 3 to 6 ellipsoid seeds 5 to 6 mm long. 



