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

Communicating Editor: Matt Lavin