United States, Texas, Parker, Just N of barn on Bear Creek Unit of Dixon Ranch, ca. 4.5-4.6 airmiles S to SSW of jct. St. Rt. 5 and F. M. 1187 at Aledo.
32.6225 -97.62319
In herbaceous vegetation on clayey alluvium along unshaded margin of stock tank in shallow valley between gentle slopes underlain by Cretaceous limestone and otherwise supporting prairie vegetation. Associates include Aster subulatus, Bothriochloa ischaemum, Conyza canadensis, Echinochloa colona, Eragrostis cilianensis, Iva angustifolia, Leptochloa filiformis, Panicum capillare, Parthenium hysterophorus, Paspalum sp., Phyla nodiflora, Polygonum ramosissimum, Solanum rostratum, Sporobolus vaginiflorus, Tridens albescens, Xanthium strumarium.