Stems erect, at least to and including the flowering part, the remainder often elongating and eventually declined; lvs short-petioled, oblong to obovate-oblong, 3–8 cm, acute to rounded, at base rounded to truncate or cordate, always ± hairy; peduncles few, 2–8 cm, produced 5–20 cm above the base of the plant; bracts oblong or ovate, seldom cordulate at base; cor white or pink, 4–7 cm; 2n=22. Dry, rocky or sandy soil, fields, and open woods; Que. and Me. to Minn., s. to Va. and Mo., and in the mts. to Ga.; May–July. (Convolvulus catesbeianus; C. purshianus; C. spithamaeus) The more strongly hairy forms, with usually cordate-based lvs, occur chiefly in the s. Appalachian region and may merit varietal recognition. (Convolvulus spithamaeus var. pubescens)
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