Acmispon neomexicanus or Greene's trefoil is a flowering plant in the family Fabaceae that grows exclusively in Arizona, New Mexico and northern Mexico.

[1][2] It is identified by very close hairy leaves and smooth flowers looking like small unclustered mustard yellow sweet peas.

The seed pods are a distinct red color with hairs all along, and with an extremely hairy seed pod base.

[3] This species grows in the dry shrubland biome.

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