Santa Rita Mountain Bean
Phaseolus ritensis
Madera Canyon, Sta. Rita Mts., Arizona, USA. 10 September 2010.
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FLOWERS: Spikes of pink to purple pea-flowers.
LEAVES: The trifoliate leaves have broad, triangular leaflets.
ANNUAL: May germinate in late spring if winter rains have been good, otherwise
growth begins after start of summer rains. Most plants are less than 100 cm in length, clamber over soil and adjacent plants, vine-like.
RANGE: Canyon bottoms with deeper, moist soils in southern Arizona and northern
Mexico. Several similar species, all closely related to cultivated common bean, can be
found in and near sycamore canyons in Arizona.
FRUIT: A weakly curved bean pod, smooth and not constricted between beans, holding two to
several seeds.
UNARMED
Fabaceae -- Legume Family
More Information:
- Southwest Environmental Information Network
- USDA Plant Profile
- Encyclopedia of Life
- Google Images
- Google Scholar Literature Search