372 D. Prain — Some additional Leguminosse. [No. 2, 



A small much branching shrub, with spreading spines rarely exceeding \ in., usual- 

 ly slightly recurved and always weaker than in the preceding species. Leaves £ in., 

 leaflets pale-green i-^- in., leaf-rachises adpressed-puberulous with very short hairs. 

 Peduncle £ in., 2-bracteolate below the 1-2 slender pedicels, \ in. long. Calyx 

 sparsely adpressed-puberulous, tube wide-campanulate, \ in. deep, teeth triangular 

 half as long as tube. Corolla % in. long. Pod f in. long, not turgid, f in. wide. 



M. Boissier suggests that this hardly differs from the preceding species ; it 

 differs however in spines, in flowers and in fruits so markedly that nothing could 

 be gained by their union. Dr. Aitchison suggests (Journ. Linn. Soc. xviii. 43) that 

 both C. ulicina and C. ambigua are perhaps only forms of an expanded species that 

 would include C. brevispina. The writer, on the other hand, finds it necessary to 

 recognise as specifically distinct from both of Stocks' species the plant identified 

 by. Dr. Aitchison with C. ambigua. The reasons for this will appear in the specific 

 diagnosis and description which follow. 



56. Caragana Aitchisoni Prain; leaflets 6-8, very rarely 10, 

 elliptic-mucronate, very sparsely adpressed-pubescent, stipules strongly 

 spinous, flowers solitary on a long slender peduncle, pod glabrous linear 

 not woolly within. C. ambigua Aitcli. Journ. Linn. Soc. xviii. 43 not of 

 Stocks. 



N.-W. Frontier; Kurram Valley, Aitchison n. 549! n. 1220 ! 

 Hazara, Belleiu ! Cliitral, at Broz, Harriss ! 



A large spiny shrub with greenish Laburnum-l\ke bark and short stoutish 

 spreading stipnlar spines \ in. long. Leaves £-f in., leaflets pale-green, \-\ in. 

 Peduncle very slender, jointed above middle, f-1 in. Calyx, \ in. long, membranous, 

 wide-tubular, externally sparsely pubescent, teeth short. Corolla f in., glabrous. 

 Pod flat, 1| in. long, ^ in. across. 



This differs very much in pedicels, calyx and pod from the true C. ambigua. It 

 is not possible to place it in C. brevispina, the calyx and pod are so different. It is 

 nearest to C. microphylla Lamk. of which it has almost the calyx and quite the 

 corolla and pods ; it differs, however, in having much longer and thinner pedicels and 

 shorter leaves with far fewer leaflets. From C. arborescens Lamk. VAR. j8. Ledeb. 

 it is best distinguished by its thicker much smaller leaflets, and its compressed not 

 cylindric pods. 



he. Caragana arborescens Lamk. Encyc. Meth. i. 615; leaflets 

 8-14, elliptic-mucronate glabrescent, stipules weakly spinous, flowers 

 several together from one node on long slender peduncles, pod glabrous 

 linear not woolly within. DC. Prodr. ii. 268 ; Ledeb. Flor. Ross. i. 569 ; 

 Aitcli. Journ. Linn. Soc. xviii. 44. 



N.-W. Frontier ; Kurram Valley, Aitchison n. 1219 ! 



A tall shrub with very short weak spreading stipular spines £ in. long. Leaves 

 1-2 in., leaflets £ in. by \ in., pale-green, thinly membranous. Peduncle very slender, 

 jointed above middle, f-1 in., 2-5 from the same node. Calyx \\n. long, membranous, 

 wide-tubular, externally sparsely pubescent, teeth short. Corolla | in., glabrous. 

 Pod cylindric, \\ in. long., \ in. in diam. 



76. Caragana acaulis Bak. in Journ. Linn. Soc. xviii. 44; leaflets 

 7-9, flowers solitary. 



