Calystegia catesbeiana
Calystegia atriplicifolia
Catesby's false bindweed
night-blooming morning-glory, nightblooming false bindweed
pubescent to tomentose, hairs usually whitish.
glabrous.
usually twining-climbing, sometimes proximally erect, distally twining-climbing, to 40–200(–300) cm.
ascending-decumbent, erect, suberect, or trailing, to 10–50 cm or almost absent.
blade elliptic-ovate, to 120 × 50 mm, base lobed, lobes obtuse or rounded, to 20 mm.
blade rounded-deltate or triangular-hastate, 20–40(–60) mm wide, base cuneate or lobed, lobes at right angles to midrib or slightly retrorse, apex acute to obtuse.
immediately subtending sepals, lanceolate, 12–34 × 10–22 mm, proximally ± keeled, margins ± enfolding sepals, apex acute.
immediately subtending sepals, elliptic, ovate, or suborbiculate, 8–19 × 3–18 mm, proximally flat or saccate, scarcely to closely enfolding sepals, apex acute, emarginate, obtuse, or rounded.
sepals 11–17 mm;
corolla white, 44–64(–70) mm.
sepals 10–15 mm;
corolla white, sometimes pink or purple-striped, 31–73 mm.
Calystegia catesbeiana
Calystegia atriplicifolia
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 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 usually suberect or trailing, to 35 cm, sometimes almost absent; leaf blades mostly 40–60 mm wide; bracts 14–19 × 9–18 mm, proximally saccate, apex emarginate to rounded; corollas 40–73 mm. | subsp. atriplicifolia |
1. Stems ascending-decumbent to erect, 10–50 cm; leaf blades mostly 20–40 mm wide; bracts 8–12 × 3–9 mm, proximally flat, apex acute to obtuse; corollas 31–44 mm. | subsp. buttensis |
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