Convolvulaceae

Including Cuscutaceae of Michigan Flora.

1. Plants leafless, non-green, annual parasitic vines.

Cuscuta

1. Plants leafy, green, not parasitic.

2. Stigma at most with 2–3 small lobes; calyx ca. 6–23 mm long, fully exposed.

Ipomoea

2. Stigma deeply cleft into 2 lobes ca. 2.5–4 mm long; calyx less than 6 mm long or covered by two large bracts.

3. Calyx all or mostly covered by 2 large closely subtending bracts; corolla ca. 2.5–6.5 cm long; stigma lobes oblong-elliptic.

Calystegia

3. Calyx fully visible; corolla ca. 2.2 (–2.5) cm long or shorter; stigma lobes linear-filiform.

Convolvulus

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 18, 2017. http://www.michiganflora.net/family.aspx?id=Convolvulaceae.