Mucuna. | XLVII, § PAPILIONACER (BAKER). 185 
variously costate or lamellate-—Climbing herbs or shrubs (one species 
erect) with pinnately trifoliolate stipellate leaves, the lateral leatlets very 
unequal-sided, 
A moderately small genus, widely dispersed through the tropics. 
§ Citta. Pod transversely lamellate. 
Pods armed with stinging bristles. 
Flowers in capitate heads on short firm peduncles. . . 1. Jd. urens. 
- Flowers in elongated racemes on very long slender pe- ’ 
duncles ARG Serr ee . I. flagellipes. 
eS) 
Pods without stinging bristles . - 2 « « « « 8. UL. cylindrosperma. 
8§ Carpopogon. Pods with a pair of broad wings at the 
upper and lower sutures ie een pe Oe ae 
4, M. quadrialata. 
S$§ Stizolobium. Pods neither winged nor lamellate. 
Climbers. 
Flowers in ample racemes 5. M. melanocarpa. 
Flowers in capitate heads. ‘ 
Calyx 3-4 lines deep, leaves herbaceous . . . . . 6. UU. pruriens. 
Calyx 6-8 lines deep, leaves coriaceous oie Tal. carienen 
An erect much-branched shrub . poke 8. UM. stans. 
1. M. urens, DC. Prod. ii. 405. Stem woody, slender, wide-climb- 
ing, the young shoots thinly adpressed-silky. Stipules small, lanceo- 
late, deciduous. Petioles 4—5 in. long, firm, subglabrous ; leaflets 3, 
papyraceous, central one ovate-oblong, 38-5 in. long, cuspidate; pe- 
tiolule an inch long; lateral ones usually larger and very unequal- 
sided, upper surface with a few deciduous adpressed bristly hairs, lower 
permanently finely shining grey-silky. Flowers in capitate heads on 
firm axillary peduncles. Bracteoles cymbiform, grey-silvery, an inch 
or more long, deciduous. Pedicels 3-4 lines long, cernuous. Calyx 
broad-campanulate, 4-3 in. deep, silvery and scattered over with de- 
ciduous yellow bristles ; upper lip rounded, entire; lower trifid with 
the central tooth longer than the others reaching a quarter down. 
Corolla sulphur-yellow, the wings and broad keel 2 in. or more long, 
the standard much shorter. Pod oblong, 5—6 in. long, 14-1} in. broad, 
nearly straight, with close broad irregular coriaceous undulated lamel- 
lations 1~3 lines broad, and yellow bristly hairs in the hollows. Seeds 
~—3,—Benth. in Mart, Fl. Bras. xxiv. t. 46, fig. 1. Stizolobium urens, 
Pers, Syn. ii. 299, 
Upper Guinea. (Guinea proper, Thonning, G. Don! Barter! Fernando Po, 
Vogel! Mann! 
osmopolitan in the tropics. 
2, M. flagellipes, Vogel in Hook. Fl. Nigr. 307. Stems firm, 
slender, glabrous, wide-twining, climbing to a length of 60 or 70 ft. 
Stipules small, lanceolate, deciduous. Petioles 4-5 in. long, firm, 
slender, elabrous ; leatlets subcoriaceous, the central one (ee 
3-6 in. long, 2-8 in. broad, cuspidate or acuminate, the base rounde : 
ar 1} in. long; the futeeat ones larger and very unequal-sided, 
oth sides glabrous. Flowers in lax racemes on a firm zigzag rachis 
on firm slender glabrous elongated peduncles sometimes 6 or 7 ft. long. 
