Vascular Plants of the Gila Wilderness

Presented in Association with the
Western New Mexico University Department of Natural Sciences

Phaseolus angustissimus Gray var. angustissimus
(Narrow Leaf Bean)


Family: Fabaceae

Status: Native

Synonyms:
None

Phaseolus angustissimus var. angustissimus is a perennial trifoliate long twining herb with flowers in racemes. The corolla in pink purple and the calyx is five toothed. The keel is strongly coiled. The pods are not constricted. The leaflets are linear and entire. Phaseolus angustissimus var. angustissimus is found on dry hillsides at lower to middle elevation. It is more of a desert plant than a mountain plant, unlike Cologania angustifolia which it superficially resembles. Cologania angustifolia has a four toothed calyx without a coiled keel.
Please click on an image for a larger file.



Phaseolus angustissimus var. angustissimus, photo Russ Kleinman, Silver City, Ridge Road, May 23, 2009



Phaseolus angustissimus var. angustissimus, closeup of pink flower with coiled keel, photo Russ Kleinman, Silver City, Ridge Road, May 23, 2009



Phaseolus angustissimus var. angustissimus, flowers in racemes, photo Russ Kleinman, Silver City, Ridge Road, May 23, 2009



Phaseolus angustissimus var. angustissimus, calyces with pair of small bracts at base, photo Russ Kleinman, Silver City, Ridge Road, May 23, 2009



Phaseolus angustissimus var. angustissimus, leaflets entire, photo Russ Kleinman, Silver City, Ridge Road, May 23, 2009



Phaseolus angustissimus var. angustissimus, prior year's pod on old foliage at base, photo Russ Kleinman, Silver City, Ridge Road, May 23, 2009


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