Materials for a monograph of the genus Prosopis.
The genus is divided into six sections, one of which, Cavenicarpa, is new. Thirty-three spp. are keyed and described, all but twelve of which belong to the section Algarobia. Contains 1 var. nov. and 1 comb, nov.-Abstract by C. V. Morton. Biol. Abstr. D. 15. Ent. 9180. 1941.