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Phaseolus acutifolius A. Gray  
Go To Encyclopedia of Life...
Family: Fabaceae
Tepary Bean
Phaseolus acutifolius image
Frankie Coburn  
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Wiggins 1964, Kearney and Peebles 1969
Duration: Annual Nativity: Native Lifeform: Vine General: Slender annual with twining, sparsely puberulent to glabrate stems 20-120 cm long, bearing subulate stipules, 0.4-1.5 mm wide, 2-5 mm long. Leaves: Pinnately trifoliolate with thin triangular leaflets, linear-lanceolate to narrowly lanceolate, 3-12 mm wide at base, 3-7 cm long, lateral ones sometimes slightly subhastate on one side, attenuate at apex, petioles shorter than leaflets, 1-3 cm long. Flowers: Slender peduncles 2-6 cm long, puberulent pedicels 1-5 mm long, calyx broadly campanulate, 2.5-3.5 mm long, sparsely puberulent to glabrate, deltoid or narrowly ovate teeth shorter than tube; corollas ranging from white to yellowish green to purple; banner 5-8 mm long; keel strongly twisted or coiled; pod slightly falcate, 3-5 mm wide, 4-6 cm long, strongly compressed, finely puberulent. Fruits: Slightly falcate, 3-5 mm wide, 4-6 cm long, strongly compressed, sparsely to moderately but finely puberulent, attenuate at apex, distinctly reticulate-venose. Ecology: Found on rocky slopes, often in and among low brush from 3,000-6,000 ft (914-1829 m); flowers August-October. Notes: The triangular shape of the leaves is distinctive for this species. This description is for the more common variant var. tenuifolius while there is a more broadly ovate to ovate-rhombic var. latifolius. Ethnobotany: Used for toothaches, cultivated and eaten, made into flour, generally an important food crop in the desert. Etymology: Phaseolus is from Greek phaselos, a little boat or light vessel, referring to its pod, while acutifolius means sharp or acute leaved. Synonyms: None Editor: SBuckley, 2010
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Phaseolus acutifolius
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Jillian Cowles  
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Jillian Cowles  
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Frankie Coburn  
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Frankie Coburn  
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Liz Makings  
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Sue Carnahan  
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Frankie Coburn  
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Frankie Coburn  
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Michael Schmidt  
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Charles Webber  
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Jillian Cowles  
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Sue Carnahan  
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Chris Roll  
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The National Science Foundation
Developments of SEINet, Symbiota, and associated specimen databases have been supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)