Indigofera. | XLVII. § PAPILIONACEEH (BAKER). 103 
Seneg. 183. JZ. tenella, Schum. et Thonn. Pl. Guin. 367. Brissonia 
trapezicarpa, Desv. in Ann. Sc. Nat. sér. 1, ix. 409. 
Upper Guinea. Senegambia, Perrottet ! Heudelot ! Roger! 
102. I.arabica, Jab. et Spach, Iilust. Pl. Or. t.479. Stem nearly 
or quite woody below, ditfusely branched from the base, about a span 
high, young branches firm, angular, densely silky. Stipules small, 
setaceous, Petioles very short. Leaflets 3-5, obovate or oblanceolate, 
{2 in. long, 2-8 lines broad, lateral ones sessile and close, all often 
folded with a decurved point, texture thick, both sides densely and 
permanently silvery. Flowers in short close racemes of 6-10 each, 
which are nearly sessile in the axils of the leaves. Pedicels very short. 
Calyx campanulate, silvery, 4 in, deep, the teeth subequal, setaceous, 
reaching three-quarters of the way down. Corolla scarlet, nearly twice 
as long as the calyx, silvery externally. Pod 4—2 in. long, 1 line broad, 
linear-oblong mucronate, subtorulose and slightly silvery, 4—5-seeded. 
Nile Land. Banks of the White Nile, Petherick! : : 
Also inhabits Arabia. The pod is not so thoroughly flattened as in the other species. 
103. I. ervoides, A. Rich. Pl. Abyss. i. 1179. Stem herbaceous, 
diffusely branched from the base, about a span high, the branchlets 
slender, angular, thinly silky. Stipules linear. Petioles 1}—2 lines 
long. Leaflets 3, rarely 5, oblanceolate, the terminal one 3-3 in. long, 
2 lines broad, stalked, the lateral ones similar, sessile, upper surface 
green, glabrous when mature, lower grey-green, thinly silvery. Flowers 
In close racemes of about 12 each, under half an inch long, on ee 
half their length from the axils of the leaves. Calyx silky, a line deep, 
the teeth linear-setaceous, reaching down nearly to the base. Corolla 
about equalling the calyx. Pod subelliptical acuminate, 3-3} 
ines long, 4 in. broad, silky, 2-seeded. 
Nile Land. Abyssinia, Schimper! Quartin-Dillon! 
19. SYLITRA, E. Meyer; Benth. et Hook. f. Gen. Plant. i. 496. 
Calyx-tube turbinate with five subequal teeth. Standard obovate- 
spathulate, narrowed gradually into a claw; wings faleate-oblong, as 
long as the standard ; keel incurved, blunt, shorter. Stamens connate 
in a tube slit along the top; anthers uniform. Ovary subsessile, multi- 
ovulate, narrowed gradually into the incurved filiform glabrous style ; 
Stigma capitate. Pod oblong, flat, membranous, 4—6-seeded, subinde- 
iscent.—Perennials with the habit of Tephrosia and pod of Lessertia. 
One other species known at the Cape with simple leaves. 
1. S. angolensis, Buiter. A thinly argenteo-canescent perennial 
with flexuose slender stems a foot high. Stipules minute, linear, per- 
‘istent. Leaves short-stalked, digitately trifoliolate ; leaflets linear, 
12-15 lines long, 1-14 lines broad, bluntish with a small mucro, rigidly 
coriaceous, grey-green, prominently veined. Flowers solitary, nearly 
Sessile in the axils of the leaves. Calyx 1 line deep, clothed with ad. 
