218 xliv. leguhinoSjE. [Indigofera 



There is another Indigofera in the collection, perhaps a new 

 species, represented by imperfect specimens : — 



Ambaca. — An undershrub, about 9 in. high, with the habit of a 

 Lotus ; stem much branched, hard and woody at the base ; leaves 

 pinnate, hoary-silky (fruit f to 1J in. long, linear, slightly hairy outside, 

 turning black, straight, erect or ascending, on short pedicels, arranged 

 in axillary racemes 1 to 2 in. long, exceeding the leaves). In fields 

 near N'gombe ; fr. Oct. 1856. No. 4136. Coll. Carp. 391. 



10. SYLITRA E. Mey. ; Benth. & Hook. f. Gen. PI. i. p. 496. 



I. S. angolensis Baker in Oliv. PI. Trop. Afr. ii. p. 103. 

 Huilla. — An erect slender rather rigid undershrub, 1 ft. high ; stem 



and branches niveo-tomentellous, flexuous at the nodes ; leaves sub- 

 pinnately (almost or quite digitately) trifoliolate ; stipules subulate ; 

 leaflets linear-lanceolate, pallid, rather rigid, glabrous above, hoary- 

 strigulose but soft to the touch beneath; flowers axillary, solitary, 

 very shortly pedunculate, small, yellow, bibracteolate ; calyx tubular- 

 campanulate, cleft two-thirds way down in a bilabiate manner, upper 

 lobes connate higher up than the others, all acuminate, almost as long 

 as the tube ; petals all clawed ; standard obovate-spathulate, narrowed 

 gradually from the middle into the claw, longer than the keel, about 

 equalling or a little exceeding the wings ; wings narrow, auriculate, 

 longer than and scarcely adhering to the moderately incurved erostrate 

 keel ; stamens all connate in a tube cleft above ; anthers uniform, 

 rather small, congregated around the capitate stigma ; ovary shortly 

 and rather broadly stipitate ; style rather short, a little curved, nearly 

 glabrous, gradually narrowed towards the stigma; pod oblong, com- 

 pressed, membranous, 4-6-seeded ; seeds separated by very thin septa. 

 In gravelly places by the river Maiombo ; one specimen fl. and fr. 

 June 1860. No. 4124. 



II. CRACCA L. Fl. Zeyl. p. 139 (1747) ; L. Sp. PI. edit. 1, 

 p. 752 (1753); non Medic, nee Benth. Tephrosia Pers. (1807); 

 Benth. & Hook. f. Gen. PL i. p. 496. 



1. C. acaciaefolia 0. Kuntze, Rev. Gen. PI. i. p. 174 (1891). 

 Tephrosia acacicefolia Welw. ex Baker in Oliv. Fl. Trop. Afr. iL 



p. 106. 



Pungo Andongo. — An erect undershrub, 3 to 4 ft. high, with purple 

 flowers. At the sandy margins of forests between Bumba and Condo, 

 in company with a species of Protea ; fl. and young fr. March 1857. 

 No. 2071. 



2. C. melanocalyx O. Kuntze, Eev. Gen. PI. i. p. 175 (1891). 

 Tephrosia melanocalyx Welw. ex Baker, I.e., p. 106. 



Huilla. — Rootstock thick, many-headed, perennial ; stems prostrate 

 in all directions ; branches ascending ; leaves (phyllodia) simple, 

 rather glabrous ; flowers in the living state brilliantly scarlet. On 

 rich grassy somewhat sandy and stony meadows, along the borders of 

 forests in the neighbourhood of Proteacese, on the road from Lopollo 

 to Monino ; fl. and young fr. Dec. 1859. No. 2072. 



3. C. laevigata O. Kuntze, Eev. Gen. PI. i. p. 175 (1891). 

 Tephrosia laevigata Welw. ex Baker, I.e., p. 107. 



Huilla. — Perennial ; stems prostrate-ascending, slender, with 



