Taxon: Phaseolus montanus Brandegee

Summary

Genus:

Phaseolus

Section:

Acutifolii

Family:

Fabaceae (alt. Leguminosae)

Subfamily:

Faboideae

Tribe:

Phaseoleae

Subtribe:

Phaseolinae

Nomen number:

507272

Place of publication:

Proc. Calif. Acad. Sci. er. 2, 3:130. 1891

Protologue link:

https://www.biodiversitylibrary.org/page/16073569

Verified:

06/27/2023 ARS Systematic Botanists.

Accessions:

25 (25 active, 0 available) in National Plant Germplasm System. (Map it)

Other conspecific taxa

Autonyms (not in current use), synonyms and invalid designations

Heterotypic Synonym(s)
Phaseolus parvifolius Freytag

No images

Conservation Status

Reference(s)

Debouck, D. G. 2021. Phaseolus beans (Leguminosae: Phaseoleae): a checklist and notes on their taxonomy and ecology. J. Bot. Res. Inst. Texas 15:73-111. DOI: 10.17348/jbrit.v15.i1.1052.
Delgado-Salinas, A. & S. Gama-López. 2022. Nomenclátor del género Phaseolus para México. Base de datos SNIB-CONABIO. Proy. JE014. Instituto de Biología, Universidad Nacional Autónoma de México, Ciudad de Mexico. Note: as Phaseolus acutifolius var. tenuifolius
Delgado-Salinas, A. et al. 2006. Phylogeny of the genus Phaseolus (Leguminosae): a recent diversification in an ancient landscape. Syst. Bot. 31:779-791. Note: as Phaseolus parvifolius Freytag
Dohle, S. et al. 2019. Chapter 4. Wild beans (Phaseolus L.) of North America. In: Green, S. L. et al., North American crop wild relatives. Volume 2. Important species. 2:99-127. DOI: 10.1007/978-3-319-97121-6_4. Note: as Phaseolus parvifolius
Florez R., C. P. et al. 2003. A biochemical trait helps to recognize Phaseolus parvifolius Freytag in the gene pool of tepary bean. Rep. (Annual) Bean Improv. Co-op. 23-24. Note: as Phaseolus parvifolius Freytag
Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius
Muñoz, L. C. et al. 2006. Taxonomy of tepary bean and wild relatives as determined by amplified fragment length polymorphism (AFLP) markers. Crop Sci. (Madison) 46:1744-1754. Note: as Phaseolus parvifolius Freytag

Common names

Distribution

order_code	Status	Continent	Subcontinent	Country	State	Note	Reference
1	Native	Northern America	Northern Mexico	Mexico	Baja California Sur	s.	Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius
1	Native	Northern America	Northern Mexico	Mexico	Chihuahua		Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius
1	Native	Northern America	Northern Mexico	Mexico	Durango		Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius
1	Native	Northern America	Northern Mexico	Mexico	Sinaloa		Debouck, D. G. 2021. Phaseolus beans (Leguminosae: Phaseoleae): a checklist and notes on their taxonomy and ecology. J. Bot. Res. Inst. Texas 15:73-111. DOI: 10.17348/jbrit.v15.i1.1052.
1	Native	Northern America	Northern Mexico	Mexico	Sonora		Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius
1	Native	Northern America	Southern Mexico	Mexico	Chiapas		Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius
1	Native	Northern America	Southern Mexico	Mexico	Guerrero		Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius
1	Native	Northern America	Southern Mexico	Mexico	Jalisco		Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius
1	Native	Northern America	Southern Mexico	Mexico	Michoacán de Ocampo		Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius
1	Native	Northern America	Southern Mexico	Mexico	Nayarit		Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius
1	Native	Northern America	Southern Mexico	Mexico	Oaxaca		Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius
1	Native	Northern America	Southwestern U.S.A.	United States	Arizona		Debouck, D. G. 2021. Phaseolus beans (Leguminosae: Phaseoleae): a checklist and notes on their taxonomy and ecology. J. Bot. Res. Inst. Texas 15:73-111. DOI: 10.17348/jbrit.v15.i1.1052.
1	Native	Southern America	Central America	Guatemala	Jalapa		Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius
1	Native	Southern America	Central America	Guatemala	Zacapa		Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius

Native
Northern America

SOUTHWESTERN U.S.A.: United States [Arizona]
NORTHERN MEXICO: Mexico [Baja California Sur (s.), Chihuahua, Durango, Sinaloa, Sonora]
SOUTHERN MEXICO: Mexico [Chiapas, Guerrero, Jalisco, Michoacán de Ocampo, Nayarit, Oaxaca]

Southern America

CENTRAL AMERICA: Guatemala [Jalapa, Zacapa]

Reference(s)

Debouck, D. G. 2021. Phaseolus beans (Leguminosae: Phaseoleae): a checklist and notes on their taxonomy and ecology. J. Bot. Res. Inst. Texas 15:73-111. DOI: 10.17348/jbrit.v15.i1.1052.
Freytag, G. F. & D. G. Debouck. 2002. Taxonomy, distribution, and ecology of the genus Phaseolus (Leguminosae-Papilionoideae) in North America, Mexico and Central America. Sida, Bot. Misc. 23:1-300. Note: as Phaseolus acutifolius var. tenuifolius

Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2026. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: https://npgstest.ars-grin.gov/gringlobal/taxon/taxonomydetail?id=507272. Accessed 12 May 2026.