TY - JOUR T1 - Taxonomy of Xylopia barbata (Annonaceae) and related species from the Amazon/Orinoco Region JF - Contributions from the University of Michigan HerbariumContributions from the University of Michigan Herbarium Y1 - 1999 A1 - Bagstad, K. J. A1 - Johnson, D. M. SP - 21 EP - 28 VL - 22 N1 - 206 JO - Contrib Univ Mich Herb ER -