Phaseolus montanus Brandegee (1893: 130)

Debouck, D. G., 2021, Phaseolus Beans (Leguminosae: Phaseoleae): A Checklist And Notes On Their Taxonomy And Ecology, Journal of the Botanical Research Institute of Texas 15 (1), pp. 73-111 : 92

Phaseolus montanus Brandegee (1893: 130) [possibly clade B; sect. Acutifolii Freytag]. TYPE: TS Brandegee 162 (LECTOTYPE: UC-82396 ) .

When Townshend Stith Brandegee reported about the flora of the Cape region of Baja California in 1893, he included his collection numbers, namely a “162. Phaseolus montanus ,” but he did not make explicit that it was a new species nor that it was the type. That plant in the Brandegee Herbarium now at Berkeley, although labelled as type, was considered as synonym of P. acutifolius var. tenuifolius A. Gray ( Delgado-Salinas 1985 p. 178) , a treatment endorsed by George Freytag who did not see it. Comparing this plant with the holotype of P. parvifolius (US-3168875), the following synonymy can be indicated: