New species of Mexican Phaseolus (Fabaceae)

Descriptions, keys, distribution, ecology, and notes on taxonomic problems and comparisons with related taxa are provided for seven new species of Pha seolus from Mexico. The new species are classified in informal Phaseolus gr oups, in accordance with a recent phylogenetic analysis using molecular and nonmolecular characters. Phaseolus macvaughii and P. perplexus are members of the P. leptostachyus group and P. pauciflorus group, respectively, Phas eolus juquilensis, P. marechalii, and P. xolocotzii are part of the P. poly stachios group, and P. hintonii and P. zimapanensis, form a well-supported clade with P. xanthotrichus, within the P. tuerckheimii group.