Canavalia. } XLVII. § PAPILIONACEE (BAKER). 191 
ale and. Sennaar and Abyssinia, Schweinfurth! Chopeh (628), Speke and 
rant | 
Lower Guinea. Loanda, Golongo Alto and Pungo Andongo, Dr. Welwitsch! 
Var. 8B C. mollis, Wall. Cat. No. 5523. 
Stems, petioles, and leaves densely pubescent, the latter smaller and thicker in tex- 
ture than in the type. 
Mozamb. Distr. Zambesi land, Dr. Kirk! 
Like the preceding widely dispersed through the tropics of both hemispheres, and 
often cultivated. 
62. PHYSOSTIGMA, Balfour; Benth. et Hook. f. Gen. Plant. 
i. 538. 
Calyx with very short teeth, the two upper ones subconnate. Stan- 
dard suborbicular, recurved, emarginate, appendiculate at the base with 
intlexed auricles ; wings obovate-oblong, incurved, free ; keel obovate, 
with a spirally twisted beak. Upper stamen free, appendiculate near 
the base ; anthers uniform. Ovary stalked, 2—3-ovulate ; style thickened 
within the beak of the keel and twisted with it; stigma oblique, covered 
by a hood. Pod linear-oblong, convex, 2-valved, thinly septate be- 
tween the seeds. 
A single species, restricted to West Tropical Africa. 
1. P. venenosum, Balfour in Trans. Roy. Soc. Edinb. xxii. 310, 
t. 16-17. Stem shrubby below, the branches glabrous, slender, climb- 
ing to a length of fifty feet. Stipules minute, deciduous. Petioles 
2-3 in. long, glabrous; leaflets 3, central one broad-ovate, 4—5 in. 
long, 3—4 in. broad, cuspidate, the base rounded or cordate, petiolule 
an inch long, lateral ones smaller, unequal-sided, both sides glabrous. 
lowers in short-stalked lax drooping racemes 3-4 in. long. Pedicels 
short, glabrous, springing 2-8 together from fleshy tubercles as in 
Canavalia. Calyx 3-4 lines deep, glabrous, the teeth subdeltoid, not 
80 deep as broad, short-ciliated. Flowers pale pink, beautifully veined, 
the folded standard enveloping the rest of the flower and curved round 
So that it comes near the side of the calyx, the spire ? in. broad, con- 
siderably exceeding the wings and keel. Pod 5-7 in. long, 13-13 in. 
thick, the valves horny, glabrous, narrowed at both ends. Seeds 2—3, 
ovoid-oblong, polished chestnut-brown, 1} in. long. 
Upper Guinea. Old Calabar, Rev. W. C. Thomson! Hutchinson! 
For a full account of the manner in which it is employed as an ordeal, reference 
must be made to Professor Balfour’s paper. 
63. PHASEOLUS, Linn.; Benth. et Hook. f Gen. Plant. i. 538. 
Upper teeth of calyx free or connate, the others deltoid or lanceolate. 
Standard orbicular, recurved or subtwisting, the edges inflexed towards 
the base : wings obovate or rarely oblong, equalling or exceeding the 
Standard, adhering to the keel above the claw, often twisted ;_keel 
linear or obovate, with a long obtuse spirally twisted beak. Upper 
stamen free, often incrassated or appendiculate above the buse, the rest 
