Psophocarpus.] xlvii. § papilionaceje (baker) 209 



stipellae small, lanceolate, rigid; both sides glabrous, or the lower slightly 

 adpressed grey-silky when young. Flowers in moderately dense ra- 

 cemes sometimes 6 in. long on firm peduncles 3 in. to a foot lon°- 

 Bracteoles ovate, blunt or cuspidate, persistent, glabrous, striated, 

 equalling or exceeding the calyx, which is 4 lines deep, subglabrous' 

 the upper lip obtuse, emarginate, the lateral teeth deltoid, the lowest 

 lanceolate, shorter than the tube. Corolla lilac, an inch deep, turning 

 black when dried. Pod 2-3 in. long, J in. thick without the wings, 

 which are about 2 lines broad, glabrous, 5-6 -seeded. — P. palmettorum, 

 Guill. et Perr. Fl. Seneg. 221. D. svffultus, Grah. in Wall. Cat. 5564. 

 D. subcequalis, Wall. Cat. 5539. Diesingia scandens, Endl. Atakta 1 t. 

 1 and 2. /3. Barteri, flowers white, leaflets large, subrotund, thinly grey- 

 pubescent all over beneath, bracteoles silky, blunt, herbaceous, shorter 

 than the calyx. 



Upper Guinea. Senegarabia, Perrottet! Old Calabar, Bev. W. C. Thomson! 

 Mann! /3. Barteri, Nupe, Barter! 



Lower Guinea. Congo, C. Smith! 



Mozamb. Distr. M'bwiga, lat. 7° 24' S , alt. 1350 feet, Sp^ke and Grant! Zam- 

 besi land, Dr. Kirk! 



Cultivated throughout the Tropics, the native country not clearly known. — The 

 allied P. tetragonolobus, DC, which has more slender stems, bracteoles shorter than 

 the calyx, and a 12-16-seeded,pod sometimes a /oot long, is also widely cultivated. 

 We have it from Mauritius, but not from 4,he mainland within the Tropics. 



68. DOLICHOS, Linn. ; Benth. et Hook. f. Gen. Plant, i. 540. 



Calyx campanulate, the upper teeth usually connate, the others nearly 

 equal. . Standard orbicular, the base appendiculate with inflexed auri- 

 cles ; wings falcate obovate, adhering to the keel ; keel much incurved, 

 usually rostrate, not spiral. Upper stamen free, often appendiculate or 

 incrassated near the base ; anthers uniform. Ovary subsessile, oo-ovu- 

 late ; style flattened upwards or filiform, longitudinally bearded near or 

 penicillate at the apex, the stigma terminal. Pod many-seeded, linear, 

 compressed, two-valved, the sutures incrassated, the valves nearly flat 

 or slightly convex. — Climbing or erect herbs or undershrubs. 



A moderately small genus as here defined, principally belonging to the Tropics of the 

 Old World. 



*Lablab. Pod oblong, 2-4-seeded ; style flattened upwards, narrowed at the base. 

 The only species 1.2). Lablab. 



** Dolichos proper. Pod linear, many-seeded; style filiform, not narrowed at the base. 

 Flowers 1-3 on short axillary pedicels, without a common 

 peduncle. 

 Stems wide-climbing. 

 Flowers 2-3 together ; pods glabrescent. 



Corolla 6-8 lines long 2. 2). bifiorus. 



Corolla 9-10 lines long 3. 2). axillaris. 



Flowers solitary, rarely geminate ; pods pubescent . . 4. 2). uniflorus. 

 Stems not at all or very slightly climbing. 

 Leaflets not lobed. 



Two upper teeth of calyx quite connate. 



Stems erect; flowers solitary . . . . 5. D.brevicauLis. 



