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Leaves of Thermopsis rhombifolia are usually shorter and broader than those of Thermopsis montana and seed pods are strongly curved. T. rhombifolia grows 6-18 inches tall; T. montana grows over several feet tall. But even more important in distinguishing Thermopsis rhombifolia from Thermopsis montana is the habitat: T. rhombifolia is a dweller of lower elevations, prairies, and sandy, dry areas. T. montana grows in more moist meadows and woodlands of the lower mountains. In the De-Na-Zin/Bisti Wilderness area, T. rhombifolia grows on hot, dry, sandy/gravelly hillsides in large patches. It blooms early but its erect, dried stems and its leaves are still evident the following year.
High Desert, Plains and Foothills
Spotted on May 17, 2020
Submitted on May 18, 2020