FLORA OF ADEN. 
167 
Leaflets 3, obovate, subsessile, central 1 — 1|- inches long, If — 1 inch broad, 
apex rounded, mucronate, upper surface glabrous, lower slightly silky in 
the young plant. 
Flowers in long-stalked lax terminal and lateral racemes. Bracts 
minute. Pedicels 1 line long, silky, erecto-patent. Calyx slightly silky, 
inch long, the teeth lanceolate, reaching about halfway down. Corolla 
yellow, rather more than twice as long as the calyx, keel much upcurved. 
Pod sessile, cylindrical, 1 — 1^- inches long, f inch thick, very silky 
when young, 15 — 20-seeded. 
Locality : — Aden (Playfair in Herb. Calc, ex nota Kew.). 
Disiributi&ji .-—Upper Guinea : Niger country. 
2 . ArgyroloMum Eckl. et. Zeyli, 
Undershrubs or herbs with digitately trifoliate leaves. Stipules free. 
Flowers in racemes or umbels. Calyx deeply bilabiate. Corolla 
scarcely exserted ; standard suborbicular, wings free, keel slightly upcurved, 
not rostrate. Filaments usually but not invariably united downwards in 
a closed tube. Ovary sessile, linear, co -ovulate ; style upcurved ; stigma 
terminal, often oblique. 
Pod linear, flattened, faintly torulose. 
Species about 50. 
Distribution : — Chiefly S. Africa, but also India, Siberia, Central 
Europe. 
Flowers yellow . . . . . . . 1. A. arabicurn. 
Flowers rose-coloured or purplish . . . . 2. A. roseum. 
1. Argyrololmmi arabicurn Jaub. et Spach. 111. Pl. Or. I, 115; 
Anders. Journ. Linn. Soc. V, Suppl. p, 15 ; Boiss. Diag. PI. Or. ser. I, 
11,13. 
Cvtisus arabicus Dene. Ann. Sc. Nat. ser. II, IV, 78. 
Description : — A diffuse, much-branched, silky-pilose undershrub ; 
branches slender, terete, hairs adpressed. Leaves trifoliate; petiole 
4 — 6 lines long ; leaflets 2 — 6 lines long, usually linear, narrow, often 
ovate, with the margin revolute. 
Flowers pedunculate, shorter than the petioles, two together ; peduncles 
axillary, bracteolate ; bracteoles small, lanceolate. Calyx silky with ad» 
pressed hairs ; segments lanceolate, oblong, acute. . Corolla yellow, glab 
rous, longer than the calyx, 3 lines long; standard suborbicular, emargi- 
nate; wings cultriform, obtuse ; stamens 10, monadelphous ; style fili- 
form, persistent, glabrous. 
