Cowboy rose Cowboy rose

Malva involucrata Torrey & A. Gray var. lineariloba Torrey & A. Gray, Fl. N. Amer. 1: 226. 1838; Callirhoe geranioides Small; C. involucrata var. parviflora Hochreutiner; C. palmata Buckley; C. sidalceoides Standley

Stems decumbent to weakly erect, 0.5–8 dm. Leaves: stipules 2.5–11.5 × 1.5–7(–9) mm; blade 1–8 × 1–9(–12) cm, sinuses between lobes of cauline leaves extending to within 2–5 mm of petiole. Involucellar bractlets 4.5–10(–13.5) × 0.5–2 mm. Petals reddish purple with white basal spot, white, or mauve with white margins, 1.4–3.5 cm (male sterile 1–2 cm). Mericarps glabrous or hairy, hairs simple. 2n = 28, 30, 60.

Flowering late winter–summer, sporadically later. Pine, oak, and oak-hickory woods, prairies, roadsides, other disturbed areas; 0–1200 m; Colo., Fla., N.Mex., Okla., Tex.; Mexico (Coahuila).

Variety lineariloba is introduced in Florida.