416 BENTHAM ON MlMOSEiE. 



glaberrima, caule angulato-striato, pinnis 4 — G-jugis, foliolis 

 subtus subaveniis, pedunculis folio v. legumine multo brevi- 

 ore, legumine tenui subulato-acuminato, aculeis brevibus 

 sparsis. — A species usually confounded with S. uncinata, but 

 well distinguished by the authors of the above quoted excel- 

 lent North American Flora. — Southern United States and 

 Texas, Drummond, 2d coll. 71. bis, and 3d coll. 159. bis, 

 (some specimens.) 



S. hamata (Humb. et Bonpl. in Willd. Spec. iv. 1042,), 

 appears to differ from S. leptocarpa, in the number of pinnae 

 which are four pair, whereas I have never seen more than 

 three pair in S. leptocarpa. — S. distachya (DC. Prodr. ii. 

 443.). is another of those puzzles created by the publication 

 of descriptions taken from Mocino and Sesse's drawings. 



XVIII. LEuciENA, gen. nov. 



Calyx tubuloso-campanulatus, 5-dentatus. Petala 5 libera, 

 membranacea, basi angustata. Stamina 10. Antheroe ovato- 

 oblongae v. subglobosae, scepe pilosce. Legumen stipitatum, 

 lato lineare, plano-compressum, valvulis 2 rigide membrana- 

 ceis dehiscens, intus uniloculare, seminibus numerosis trans- 

 versis. — Arboresv. frutices Americas tropicse, inermes. Folia 

 bipinnata, petiolo saepius infra jugum infimum pinnarum 

 glandula majuscula interdum evanida onusto. Peduticuli 

 axillares, subfasciculati, folio multo breviores, apice v. infra 

 apicem bibracteati. Capitula globosa. Flores albi. Genus 

 a Piptadtniis Niopis, quibus habitu affine est, differt calyce 

 majore, petalis tenuibus, antheris non glandnliferis, legumine 

 laevi, etc. 



1. Li.glauca, pinnis 4 — 8-jugis, foliolis 10 — SOjugis distan- 

 tibus lineari-falcatis membranaceis subtus pallidis glancisve, 

 bracteolis apice ovatis calycem subcequantibus, calyce corolla 

 dimidio breviore. — Acacia glanca, Willd., A. biceps, Willd., A. 

 frondosa,Vi\\](]., et^. leifcocfphalo, Link. DC. Prodr. ii. 467, 468. 

 West Indies, Bahamas, and Demerara; Brazil, Sello, Gardner^ 

 w. 891 ; Lima, Cuming, n. 990; gardens of S. Europe and 

 N. Africa : E. India, Ceylon, Mauritius, Java and China, 



