Gaura villosa Torrey var. parksii Munz, Bull. Torrey Bot. Club 65: 215. 1938; G. villosa subsp. parksii (Munz) P. H. Raven &D. P. Gregory

Herbs densely soft-villous, hairs mostly appressed, also his­pidulous, branches of inflo­rescences glabrous. Leaves: blade narrowly oblanceolate or oblanceolate to nar­rowly elliptic, margins shallowly sinuate-dentate. Flowers: floral tube 1.5–4 mm; petals 7–12 mm; style 9–16 mm. 2n = 14.

Flowering (Apr–)May–Aug(–Oct). Flats and hills of red sand local on Rio Grande Plain; 100–200 m; Tex.

Subspecies parksii is known from a narrow area of south Texas, including Atascosa, Bexar, Dimmit, Frio, Guadalupe, Jim Hogg, Maverick, Medina, Wilson, Zapata, and Zavala counties.