Click on image for full screen view.
| Screwbean, Screwbean Mesquite, Tornillo, Screwpod Mesquite, Twisted Bean, Fremont Screwbean|
Screwbean is found along river valleys and irrigation ditches in west Texas. It grows best where there is moisture, or where moisture might accumulate from a flash flood, although it can survive in the desert. It is a multi-trunked large shrub or tree, small and dainty, barely reaching 30 feet in height. It differs from mesquite (P. glandulosa) in that its spines and leaves are smaller, it has 5 to 8 pairs of leaflets instead of 10 or more, its twigs are gray and not red, and its bean is tightly coiled into a spiral (hence its common name) as opposed to mesquite's straight pod.
Plant Habit or Use: large shrub small tree
Flower Color: yellowish
Blooming Period: spring summer
Fruit Characteristics: tightly coiled, twisted bean
Height: to 30 ft.
Width: to 35 ft.
Plant Character: deciduous
Heat Tolerance: very high
Water Requirements: low
Soil Requirements: adaptable