This monograph is the second installment of a three-part study of the synandrous Mimosaceae occurring in the Americas, that is, those genera of the tribe Ingeae ever referred to Pithecellobium Martius. In the first comprehensive treatment since 1875, Part II covers the genera Pithecellobium, Cojoba, and Zygia. Pithecellobium differs consistently from all other Ingeae in one character: the seed-funicle modified into a spongy aril that cups the lower one-third or one-half of the seed. Includes phylogenetic analyses, keys, descriptions, black-and-white drawings, and distribution maps.
