208 XLVII. § PAPILIONACEH (BAKER). [ Pachyrhizus. 
1. P. angulatus, Rich. in DC. Prod. ii. 402. Root a tuber like a 
turnip, eatable. Stems perennial, firm, wide-twining, subglabrous. 
Stipules small, linear or lanceolate. Petioles firm, subglabrous, 2-6 in. 
long; leaflets 8, roundish, usually more or less rhomboidal, often 
sinuate-lobate, 4—6 in. each way, both sides glabrous or the lower thinly 
adpressed grey-silky when young. Flowers in ample racemes 4—6 in. 
long on firm peduncles often equalling them. Bracts and bracteoles 
small, setaceous. Pedicels 2-3 lines long, silky. Calyx 3—4 lines 
deep, silky, the teeth reaching about halfway down. Corolla reddish, 
an inch or more deep. Pod 6-9 in. long, 8—9 lines broad, subcom- 
pressed, distinctly constricted vertically, 9—12-seeded. — Zeniocarpum 
articulatum, Desv. in Ann. Sc. Nat., Sér. 1, ix. 421. 
Upper Guinea. Senegambia, Lepriewr and Perrottet! Guinea proper, Barter! 
Nile Land. Banks of the White Nile, Petherick! Madi, Speke and Grant! 
Abyssinia, Schimper ! 
Cultivated throughout the Tropics, the native country not clearly known. 
2. P.? orbicularis, Wein. mss. Stems wide-climbing, finely downy. 
Stipules lanceolate, } in. Petioles 3-4 in.; leaflets 3, subcoriaceous, 
glabrescent above, finely downy below; end one: suborbicular, rather 
broader than deep, 3—34 in. long, blunt with a minute distinct mucro; 
petiolule 18-21 lines ; lateral ones short-stalked, unequal-sided ; stipelle 
spreading linear. Flowers in long-peduncled close racemes 8-4 12. 
long. Bracts lanceolate boatshaped, 3—4 lines, deciduous. Pedicels 
very short. Calyx }in., densely velvety, upper teeth subconnate, 
lowest lanceolate, as long as the tube. Corolla pale yellowish, net 
much exceeding the calyx. Stamens monadelphous. Ovary linear, 
downy, multiovulate ; style glabrous, much incurved; stigma oblique. 
Pod unknown. 
Lower Guinea. Highlands of Pungo Andongo, Dr. Welwitsch ! 
67. PSOPHOCARPUS, Neck.; Benth. et Hook. f. 
Gen. Plant. i. 540. 
Calyx with the two upper teeth subconnate, the lowest rather longer 
than the two lateral ones. Standard suborbicular, appendiculate at the 
base, with inflexed auricles; wings obliquely obovate; keel incurved, 
obtuse. Upper stamen free at the base, connate with the others at the 
middle; anthers uniform. Ovary shortly stalked, multiovulate; sty?¢ 
incrassated above the ovary, subulate, incurved; stigma globose, tet 
minal or introrse, densely penicillate. Pod tetragonous, with a wing 
to each angle, two-valved, filled up between the seeds.—Wide-climbing 
herbs. 
1. P. longepedunculatus, Hussk. Pl. Jav. 388. Root tuberous. 
Stem firm herbaceous, wide-climbing, subglabrous. Stipules 4—6 lines 
long, subpeltate. Petioles firm, glabrous, 3-4 in. long; leaflets 3; 
broad-ovate or rhombdidal or slightly hastate, 3-4 in. each way 
