Slender dwarf morning glory, ojo de víbora

Convolvulus alsinoides Linnaeus, Sp. Pl. 1: 157. 1753; Evolvulus alsinoides var. angustifolius Torrey; E. alsinoides var. grisebachianus Meisner; E. alsinoides var. hirticaulis Torrey

Perennials; herbage loosely hairy to glabrate, hairs erect to spreading. Stems usually ascending, rarely procumbent, 6–50 cm. Leaves: blade elliptic, lanceolate, oblong, or ovate, 8–22 × 3.5–11 mm. Inflorescences 2-flowered or flowers solitary; peduncles plus pedicels filiform, (12–)25–50+ mm. Flowers: sepals lanceolate, 2–2.5 mm, abaxially glabrous or pilose; corolla pale blue or white, rotate, limb (5–)7–10 mm diam. 2n = 26 (Asia).

Flowering Feb–Dec. Pine-oak woodlands, saguaro desert scrub, desert grasslands, disturbed sites, xeric and rocky sites; 0–1900 m; Ala., Ariz., Fla., N.Mex., Tex.; Mexico; Central America; South America.

Presence of Evolvulus alsinoides was reported for Alabama by C. T. Mohr (1901). Its presence in Missouri has not been confirmed.