There are several genera of Mimosoideae in Texas that resemble each other, especially when only the flowers are present. Probably the plants most frequently wrongly identified in the genus Desmanthus are Acacia hirta Nutt. and A. texensis T.&G. (A. cuspidata Sehl.), followed closely by the prostrate plants of Neptunia. Other similar Texas genera are Calliandra, Hoffmanseggia, Schrankia, and Mimosa strigillosa T.&G. The following vegetative key is designed as a quick aid to place species of this complex of plants in their proper places when flowers and/or fruit are absent.
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Turner, B. L.
"Vegetative Key To Texas Desmanthus (Leguminosae) and Similar Genera,"
Field and Laboratory: Vol. 18
Available at: https://scholar.smu.edu/fieldandlab/vol18/iss2/1