1897.] D. Prain — Some additional Leguminos». 507 



A tree 30-40 feet high, with slender black slightly zig-zag glabrescent branches. 

 Spines stipular only, very small and weak, always under '2 in. long. Leaf-rachis 

 sparsely pubescent, 2-3 in. long with a large flat petiolar gland just below the first 

 pair of pinnae ; pinnae 1 in. long, leaflets ovate-oblong crowded, '2 in. long, *1 in. 

 across, subcoriaceous, Peduncles crowded in the axils of full grown leaves, *75 in. 

 long, with ring of bracts above the middle. Heads '4 in. in diam. Calyx campanu- 

 late minute. Corolla thrice the calyx, teeth short subacute. Staminal-tube much 

 shorter than that of corolla. 



This species and the next are somewhat unlike any of the other Indian 

 Acacias. The flower-head are exactly those of species of Acacia of the Farne- 

 siana or the arabica groups, but the connate filaments suggest that they are not 

 Acacias. They do not bear much resemblance to any of the Albizzias or Pithecolo- 

 biums ; in foliage, however, both plants recall some of the American species of 

 Calliandra. The amount of union of filaments is not in the present plant very great, 

 the staminal tube being hardly longer than the stipe of the ovary and, had there been 

 no other to deal with, the writer would have felt but few misgivings about referring 

 it to Acacia. 



6c. Acacia? inopinata Prain; pinnae long, distant, 12-14, leaf- 

 lets 20-22, heads in lax panicles ; pedicels with a whorl of bracts. 

 Shan Hills ; King's Collector ! 



A tree ? with slender black straight glabrous branches. Spines 0. Leaf-rachis 

 glabrous, 8-10 in. long, with two large flat petiolar glands below the bases of the 

 2 distal pairs of pinnae ; pinnae 2 in. long ; leaflets linear-oblong, - 35 in. long, "15 in. 

 wide, subcoriaceous. Peduncles in fascicles of 3-4, on the branches of a lax, twice 

 branching terminal panicle i-l*6 feet long, secondary branches 6-8 in. long, tertiary 

 branches 3 in. long, pedicels *6 in. long, slender, puberulous, with a ring of bracts just 

 below the middle. Heads "4 in. in diam. Calyx campanulate minute. Corolla 

 thrice the calyx-teeth, short subacute. Staminal tube almost equalling that of 

 corolla. 



A remarkable plant, evidently congeneric with and nearly related to the last 

 species, but at the same time very distinct by reason of its staminal tube, formed by 

 the more or less regular union of the filaments throughout their lower two-thirds to 

 three-fourths. The writer was at first inclined to treat these two plants tentatively 

 as Calliandras and indeed issued specimens as such. His friends on the Kew staff, 

 however, suggest that both should be treated as Acacias ; in deference to their opinion 

 this course is here adopted ; it will be noted that the location of the present plant in 

 Acacia violates the one character on which the existence, not merely of the genus 

 Acacia, but of the tribe Acacieae depends. 



7. Acacia leucophloea Willd. 



Under var. microcephala (Grah.), Mr. Baker places both A. microcephala Wall. 

 Cat. 5263 and A. densa Wall. Cat. 5262. The last mentioned is a form that is of 

 frequent occurrence in the Shan Hills, it has fruits exactly like typical A. leucophloea 

 and the writer agrees with Mr. Baker in reducing it to Willdenow's species. 

 A. microcephala Grah., however, has very different pods, never under 5 in. long or 

 •5 in. wide and always glabrous ; it is therefore, in the writer's opinion, not only 

 necessary to distinguish it from A. leucophloea var. densa, but preferable to consider 

 it, as Graham did, a distinct species. 

 J. ii. 64 



