Calystegia catesbeiana
Calystegia stebbinsii
Catesby's false bindweed
Stebbins' false bindweed, Stebbins' morning-glory
pubescent to tomentose, hairs usually whitish.
hairy, hairs appressed or spreading, whitish.
usually twining-climbing, sometimes proximally erect, distally twining-climbing, to 40–200(–300) cm.
trailing or twining-climbing, to 100 cm.
blade elliptic-ovate, to 120 × 50 mm, base lobed, lobes obtuse or rounded, to 20 mm.
blade palmately 7–9-lobed, lobes linear to linear-oblong, to 55 × 6 mm, base ± truncate.
immediately subtending sepals, lanceolate, 12–34 × 10–22 mm, proximally ± keeled, margins ± enfolding sepals, apex acute.
to 18 mm distant from sepals, margins palmately 3–7(–9)-lobed, lobes to 18 × 3 mm.
sepals 11–17 mm;
corolla white, 44–64(–70) mm.
sepals 7–11 mm, basally glabrous or hairy;
corolla cream, yellow, or pink-striped, 30–35 mm.
Calystegia catesbeiana
Calystegia stebbinsii
Subspecies 2 (2 in the flora).
Plants of Calystegia catesbeiana, especially subsp. catesbeiana, often have been misidentified as C. sepium because of their climbing habit.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Calystegia stebbinsii is notable for having no intermediates or hybrids with any other species or any significant infraspecific variants. In some characters, it is similar to C. vanzuukiae; they grow in similar habitats.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Stems usually weakly twining-climbing, sometimes proximally erect, to 40(–100) cm; leaf blades to 60 mm, basal lobes obtuse or rounded, to 11 mm, surfaces usually pubescent, abaxial rarely whitish. | subsp. catesbeiana |
1. Stems twining-climbing to 200(–300) cm; leaf blades to 120 mm, basal lobes rounded, 9–20 mm, surfaces densely pubescent to tomentose, abaxial usually whitish. | subsp. sericata |
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