Indigo/era.] xlvii. § papilionace;e (baker). 103 



Seneg. 183. I. tenella, Schum. et Thonn. PI. Guin. 367. Brissonia 

 trapezicarpa, Desv. in Ann. Sc. Nat. ser. 1, ix. 409. 

 Upper Guinea. Senegarabia, Perrottet ! Heudelot ! Roger 1 



102. I. arabica, Jaub. et Spaeh, Illust. El. Or. t. 479. Stem nearly 

 or quite woody below, diffusely 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, 

 J-f in. long, 2-3 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, \ 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 \-% 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. PI. Abyss, i. 1179. Stem herbaceous, 

 diffusely branched from the base, about a span high, the branchlets 

 slender, angular, thinly silky. Stipules linear. Petioles 1J-2 lines 

 long. Leaflets 3, rarely 5, oblanceolate, the terminal one J-f 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 peduncles 

 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 

 pink, about equalling the calyx. Pod subelliptical acuminate, 3-3J 

 lines long, \ 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 falcate- 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- 

 hiscent. — Perennials with the habit of Tephrosia and pod of Lessertia. 



One other species known at the Cape with simple leaves. 



1. S. angolensis, Baker. A thinly argenteo-canescent perennial 

 with flexuose slender stems a foot high. Stipules minute, linear, per- 

 sistent. Leaves short-stalked, digitately trifoliolate ; leaflets linear, 

 12-15 lines long, 1-1 J 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 • 



