n2 
Herb, rather woody at the base, about 30 cm. high or more; stems smooth or 
sparingly aculeata. Leaves up to 15 cm. long; rachis slightly aculeate below; leaflets 
up to about twenty pairs, elongate-oblong, rounded and minutely mucronate at the apex, 
unequal-sided at the base, 1-5-2-5 cm. long, about 5 mm. broad, pale glaucous-green, 
glabrous ; stipules linear-subulate, acutely acuminate, about 8 mm. long, slightly hairy 
on the margins, soon falling off. Inflorescence very small, 2—3-flowered, about 1-5 cm. 
long; peduncle slender, slightly hairy towards the base; pedicels very slender, about 
5 mm. long, glabrous; bracts and bracteoles caducous. Calyx widely campanulate, 
acutely turbinate at the base, with five short acute lobes. Vezdlum broadly orbicular, 
with two sessile linear appendages on the claw. Fruits about 16 cm. long, 3 mm. broad, 
linear, acutely acuminate, with an undulate wing on the back of the valves. Seeds nearly 
rounded, small. 
TROPICAL AFRICA: Angola: Loanda District, J. Gossweiler 253, 1479; Loanda: 
Welwitsch 1991, 1993. 
18. Sesbania microphylla, Harms in Kunene-Samb. Exped., 260 (1903). 
An erect branching herb, up to 2 m. high; branches ribbed, glabrous. Leaves 
2-12 cm. long; petiole 0-2-1 cm. long, glabrous; rachis flattened on the upper surface, 
glabrous, leaflets 5—30-jugate, subsessile, 2-7 mm. long, 0:5-2-5 mm. broad, oblong or 
elliptic, obtuse, shortly mucronate, slightly unequal at the base, punctate above with 
minute black dots, glabrous, with the mid-rib distinct beneath. Stipules 2-5-3 mm. long, 
setaceous, deciduous, or persistent. Inflorescence axillary, racemose, three or four flowered, 
2-6 cm. long, longer or shorter than the subtending leaf; base of peduncle glabrous ; 
bracts deciduous, not seen; bracteoles 2-5 mm. long, setaceous, persistent in mature 
flowers ; pedicels 1-2 cm. long, glabrous. Calyx-tube 3 mm. long, 3 mm. in diameter, 
campanulate, with five broad brown bands; teeth 1 mm. long, ovate, with brown 
acuminate tips. Vexillum yellow, mottled with numerous fine purple spots on the back, 
1-5 cm. long, 1-1 cm. broad, ovate-oblong, rounded above, with two adnate linear- 
appendages within a short claw 1-5 cm. long. Alae 1-6 cm. long, oblong, obtuse, with 
a linear claw 2-5 cm. long, and a downward projecting tooth from the base of the lamina. 
Carina 1-65 cm. long, 5 mm. broad, almost plano-convex in outline, with a linear claw 
6 mm. long, and a downward projecting tooth from the lamina. Staminal sheath 1 cm. 
long, 2 mm. broad at the base, with the free portion of the filaments arcuate ; free stamen 
slightly bent at the base; anthers 0-75 mm. long, ovate. Ovary 1-3 cm. long, sub-com- 
pressed, with two faint longitudinal bands; style 4 mm. long, arcuate ; stigma capitate. 
Fruit 11 5-12 -5 em. long, 2-2-5 mm. broad, linear, acutely acuminate, laterally compressed, 
moniliform Seeds dark brown, 3 mm. long, 1-5 mm. broad, oblong, rounded at both 
ends, glabrous. 
TROPICAL AFRICA: Angola: Mouth of the Longa River, 3480 ft., 22nd December, 
1899, H. Baum 569. Eastern Sudan: Bahr. el Ghazal, flowers yellow mottled with black, 
A. F, Broun. Rhodesia: Lomagundi, Darwendale on pierite formation, in vleis, April, 
Kyles, 695; Bulawayo, J. S. MacDonald in Herb. Dept. Agric. 4942. | 
19. Sesbania mossambicensis, Klotzsch in Peters, Reise Mossamb. Bot. 45 (1861). Ses- 
bania macowaniana Schinz. in Verh. Bot. Ver. Brand, XXX, 165 (1888). 
A weak sparingly branched herb about 1 m. high. Branches striate, glabrous. 
Leaves 1-5-11 cm. long; petiole 2-7 mm. long, glabrous; rachis flattened or channelled 
above, glabrous, rarely sparsely covered with hairs ; leaflets 7-33-jugate, subsessile, oblong 
or oblong-linear, rounded at the apex, shortly apiculate, unequal at the base, glabrous, 
0-3-1 em. long, punctate with minute black dots on the upper surface, with the mid-rib 
distinct beneath; stipules usually persistent, 2-5 mm. long, ovate or ovate-lanceolate, 
acuminate, acute. Inflorescence an axillary raceme, 1-7 cm. long, 3—8-flowered, longer 
or shorter than the subtending leaf; peduncles glabrous; bracts generally persistent, 
2 mm. long, linear; bracteoles persistent, 1-5 mm. long, linear; pedicels 3-7 mm. long, 
