208 xlvii. § papilionace2E (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, sube .abrous, 2-6 in. 

 long- ; leaflets 3, 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. — Tceniocarpum 

 articulatum, Desv. in Ann. Sc. Nat., Seivl, ix. 421. 



Upper Guinea. Senegambi a, Leprieur 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, Welw. 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, 3-3J in. long, blunt with a minute distinct mucro ; 

 petiolule 18-21 lines ; lateral ones short-stalked, unequal-sided ; stipellse 

 spreading linear. Flowers in long-peduncled close racemes 3-4 in. 

 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, not 

 much exceeding the calyx. Stamens monadelphous. Ovary linear, 

 downy, multiovulate ; style glabrous, much incurved; stigma oblique. 

 Pod unknown. 



Lower Gninea. Highlands of Pun go 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 indexed 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 ; style 

 incrassated above the ovary, subulate, incurved ; stigma globose, ter- 

 minal or introrse, densely penicillate. Pod tetragonous, with a wing 

 to each angle, two-valved, Ailed up between the seeds. — Wide-climbing 

 herbs. 



1. p. longepediraculatus, Hassk. 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 rhomboidal or slightly hastate, 3-4 in. each way ; 



