United States, Texas, Cameron, Laguna Atascosa National Wildlife Refuge, Unit 2, ca. 150 m. NE of lookout tower near Impoundment 4. 50 m. from and ca. 5 m. above Laguna.
Dry hillside. Hard packed gray - brown silt, cracking at surface. Zizyphus sp. - Opuntia lindh. complex. Shrub, 1 m. Basal diameter, 1 cm. Regularly and densely branched. Bark blotchy gray - tan, some vertical striations. Leaves yield soapy odor when crushed. Very pale green floral parts except white stamens.