Calystegia catesbeiana
Calystegia hederacea
Catesby's false bindweed
Japanese false bindweed
pubescent to tomentose, hairs usually whitish.
glabrous.
usually twining-climbing, sometimes proximally erect, distally twining-climbing, to 40–200(–300) cm.
initially erect, usually becoming procumbent or weakly twining-climbing, to 80 cm.
blade elliptic-ovate, to 120 × 50 mm, base lobed, lobes obtuse or rounded, to 20 mm.
blade triangular to triangular-hastate, 20–80 × 20–70 mm, base lobed, lobes 2(–3)-pointed, basal sinus quadrate, rounded, or broadly V-shaped, apex ± acute.
immediately subtending sepals, lanceolate, 12–34 × 10–22 mm, proximally ± keeled, margins ± enfolding sepals, apex acute.
immediately subtending sepals, lance-ovate to ovate, 7–14(–18) × (4–)6–10(–12) mm, proximally flat, apex acute to subobtuse.
sepals 11–17 mm;
corolla white, 44–64(–70) mm.
sepals 5–8(–12) mm;
corolla usually pale pink, sometimes purple or white, 21–32(–35) mm.
= 22.
Calystegia catesbeiana
Calystegia hederacea
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 hederacea is easily recognized by its usually procumbent habit, ivylike leaves, and relatively small bracts and flowers.
(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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