AFRICAN SPECIES OF CROTALARIA. 259 
N. Nicerta: Katagum Distr., Dalziel No, 15 ! Hb. Kew. 
The plant distributed as C. arenaria, Benth. by M. Chevalier, from 
Timbuctoo, No. 1264, is Requienia obcordata, DO. 
Series 8. Flores pauci, sepius 1-4, interdum in varietatibus C, glauce 
Willd. numerosiores. Carina dorso rotundata, 5-9 mm. longa. 
Herbæ annue, erecta, rarius perennes, glabræ vel pubescentes. 
10. €. ataua, Willd. Sp. Pl. iu. 974 (1800) ; DC. Prod. ii. 127 ; Schum. 
et Thonn. Guin. Pl. 334; Benth. in Hook. Lond. Journ. Bot. ii. 
(1843) 480 ; Baker in Oliver, Fl. Trop. Afr. ii. 12. 
C. acutifolia, Steud. in Schimp. Pl. Abyss. No. 829. 
Caulis subherbaceus, 30-100 cm. altus, strictus, glaber, glaucescens. 
Rami teretes, læves, erecti. Stipulæ nullæ. Folia lineari-lanceolata vel 
lineari-oblonga, sepissime 2-5 em. longa, 2-10 mm. lata, glaberrima, glauca, 
petiolo ad 1 mm. longo prædita. Wacemi axillares, in forma typica laxe 
l—4-flori. Calycis laeciniee tubo longiores. Bracteolæe ad basin calycis 
geminæ, setaceæ. Corolla lutea. Vexillum subrotundum, emarginatum. 
Carina dorso semiorbicularis, 5-8 mm. longa, Legumen oblongum, 18- 
25 mm. longum, glaberrimum, stipite calycem subæquante, polyspermum. 
Widely distributed in Tropical Africa from Abyssinia to Rhodesia, and 
collected by Schlechter on the south-east coast at Lion’s Creek (No. 12217, 
Hb. Kew.). 
The type was collected in Guinea by Thonning. 
Var. GENISTIFOLIA, Bak. fil.—-C. genistifolia, Schum. et Thonn. Pl. 
Guin. 335. 
Caules erecti, glabri. Folia lineari-lanceolata. Racemi laterales, 6—8- 
flori. Flores remoti. 
CAMEROONS : Ledermann No. 5317! Hb. Berol. 
GUINEA : Thonning. 
Conco REGroN : Kitobola, A. Flamigni No, 248 ! Hb. Brux. 
Var. nov. HUMILIS, Bak. fi. 
Humilis, usque ad 15 cm. altus attingens, ramosus, fere glaber. Folia 
anguste oblonga, 10-20 mm. longa, 8-7 mm. lata, petiolo vix 1 mm. longo 
prodita. — Calyz circ. 6 mm. longus. Vexillum suborbiculari-obovatum, 
9-10 mm. longum. Carina 8-9 mm. longa. Legumen oblongum, stipitatum, 
cum stipite 16—18 mm. longum, glabrum. 
Cameroons: Jukuria, Ledermann No. 2158! Hb. Berol. In flower 
5 Jan. 1909. 
A dwarf, copiously branching, nearly glabrous plant. Flowers of medium 
size, solitary, or subsolitary, long-pedicelled. 
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