204 C0NTH1I5UTI0NS FKOM THE ^^VTIONAL HERBAIUUM. 



1. Rudolphia volubilis Willd. 



•(Urban, 302.) 



Twining; Ic^aflcts cf)rdato, rarely l^roadly o^'atc, 5 to 10 cm. long, 3.5 to 7 cm. wide, 

 truncate at the base, acuminate; pedicels 5 to 7 mm. long; calyx purple, 2.0 to 2.5 cm. 

 long; corolla coral-colored, pale purple or bloud-red; standard 4.0 to 4.5 cm. long, 1.^ 

 to 1.3 cm. wide; wdiigs 1.5 to 1.8 cm. long, 0.7 to 1 mm. wide; keel petals 1.2 to 1.0 

 cm. longj 0.7 tu 1 mm. wide. 



In the primeval forest, not unuswal — e. g., near Bayamon; near "Rio Blanco; in 

 Sierra de Luquillo on Mount Jiniencv.; Sierra do Naguabo on Mount Piedra Pelada; 

 near Yabucoa, at Guayabota and on Mount; Piedra Azul; near Ilato Grande on Mount 

 Gregoriu; near Aibonito, at Guyon; n(^ar Cayey, on Mount Torito; near Adjuntas on 

 Mount Serrote; n<^ar Penuelats, at Jjas Cruces; near Maricao on Mount Alegrillo; near 

 Mayaguez on Mount Mesa; in Sierra de Lart^s at Guajataca. Indigenous. 



Local names, bejuco Colorado^ bejnco <lc ahutfbre^ bcjnco jmcto 



57. MTJCUNA Adans. 



3fucuna Adanh. Fam. 2: 325. 1763. 



Calyx broadly campaiudate, very uiunpially toothed, the upper tooth (consisting 

 of 2 comlnned) broader, the lowest longer; standard folded together, shorter than 

 the wings, with indexed auricles at the base; wings ol)long or oA-ate, incurved, often 

 adhering to the keel; keel equaling or longer tluui tlie wings, incurved at theapeXj acute 

 or rostrate; vipp(T i:^tamen free, the rest connatt^ anthers alternately longer and fixed 

 at tire base and shortt^r and versatile, often bt^arded; ovary sessile, pauciovulate; 

 style fdiform; stigma small, terminal; pod thick, lim^ar or ovate-oblong, often clothed 

 witli stinging hairs, 2-valved, sepiale betw(^en the seeds, the valves coriaceous, 

 plane or vario\isly costate or lauK^llate, sometimes winged. — Climl)iiig herbs or shrubs 

 (one species erect) ; leaves pinnate; leaflets 3, with stipels; stipules caducous; flowers 

 usually large, purple, nul, or yeUowish green, rarely light green, in axillary racemes 

 or fasciculat(3 at the end of the peduncle; bracts usually small, seldom large, usually 

 caducous. 



KEY TO THE SPECIES 



1, M. urens. 



Pod oblong, nearly straight, with close, broad, irrrguhir, coriaceous 

 undulated lam(41ationa and yellow bristly hairs in the hollows, 

 2 or 3-seeded; l(\ifl(4s papyrac<Hjus, the upper surface with a Ivw 

 deciduous adprcssed bristly hairs, un<hi' surface more or less silky, 

 central one ovate-oblong, cuspidate; flowers in capitate heads 

 on firm axillary peduncles; corolla sidphur-yellow. (Section 



CiTTA DC.) 



Pud linear, curved, longitudinally ribbed, densely clothed with 

 browMi silky bristles, 5 or G-seeded; leaflets meml^ranous, the cen- 

 tral one ovate-rhouiboidal broad, blunt isb with a miuTo, the 

 upper surface glabrous; dowers in shor1-stalk(Hl copious rac(*mes; 



■ 



corolla deep dark purple. (Section Stizolobtum DC.) 2. M. prvriens. 



Leaflets ovate or oval^tblong, glabrous; peduncle long, slender, 

 pendulous; pod compressed, flat, without lamellae, often very 

 long, many-seeded, constricted betwet'U the seeds; seeds round; 



hilum linear. (Section Cahpopogon.) 3. M. allUsiiua. 



