Purple morning glory

Convolvulus capillaceus Kunth in A. von Humboldt et al., Nov. Gen. Sp. 3(fol.): 76; 3(qto.): 97. 1819

Perennials. Stems usually ascend­ing to erect, sometimes trailing. Leaf blades palmati­sect, lobes 5–9, filiform to lin­ear, (3–)5–15(–25) × 0.2–1 mm. Peduncles glabrous. Flowers: sepals elliptic, oblong, or ovate, 5–6 × 2–3 mm, charta­ceous or coriaceous, abaxial surface muricate or smooth; corolla lavender to red-purple, funnelform, 30–40 mm, limb 20–25 mm diam.

Flowering Jul–Sep. Oak woodlands, plains, pon­derosa pine zones; 1500–2500 m; Ariz., N.Mex., Tex.; Mexico; Central America; South America.

The report of Ipomoea capillacea from Alabama (J. T. Kartesz and C. A. Meacham 1999) was probably based on a specimen of I. muricata.