Calystegia catesbeiana
Calystegia purpurata
Catesby's false bindweed
Pacific false bindweed, smooth western morning glory
pubescent to tomentose, hairs usually whitish.
glabrous.
usually twining-climbing, sometimes proximally erect, distally twining-climbing, to 40–200(–300) cm.
ascending-decumbent, trailing, or twining-climbing.
blade elliptic-ovate, to 120 × 50 mm, base lobed, lobes obtuse or rounded, to 20 mm.
blade ± triangular to ovate-triangular, 15–50 mm, base lobed, lobes spreading, rounded or 2(–3)-pointed.
immediately subtending sepals, lanceolate, 12–34 × 10–22 mm, proximally ± keeled, margins ± enfolding sepals, apex acute.
3–10(–16) mm distant from sepals, linear, (2–)3–12(–16) × 0.4–1.5 mm, margins entire or proximally lobed or toothed.
sepals 11–17 mm;
corolla white, 44–64(–70) mm.
sepals 7–14 mm;
corolla white or cream to pale purple, usually purple-striped, (23–)26–46(–52) mm.
Calystegia catesbeiana
Calystegia purpurata
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.)
Subspecies 2 (2 in the flora).
(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 |
1. Stems strongly twining-climbing; leaf blades triangular, basal sinus V-shaped, apex acute; bract margins entire. | subsp. purpurata |
1. Stems ascending-decumbent, trailing, or weakly twining-climbing; leaf blades ovate-triangular, basal sinus ± closed, apex emarginate to rounded; bract margins lobed or toothed. | subsp. saxicola |
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