Calystegia catesbeiana
Calystegia occidentalis
Catesby's false bindweed
bush morning glory, chaparral false bindweed, pale morning-glory, western morning glory
pubescent to tomentose, hairs usually whitish.
usually puberulent or pubescent, sometimes glabrescent, rarely tomentellous or ± villous.
usually twining-climbing, sometimes proximally erect, distally twining-climbing, to 40–200(–300) cm.
decumbent, procumbent, or twining-climbing, to 400 cm.
blade elliptic-ovate, to 120 × 50 mm, base lobed, lobes obtuse or rounded, to 20 mm.
blade ± triangular, 15–40 mm, base usually lobed, lobes rounded or 1–2-pointed, basal sinus quadrate, rounded and ± parallel-sided, or V-shaped, base sometimes ± cuneate.
immediately subtending sepals, lanceolate, 12–34 × 10–22 mm, proximally ± keeled, margins ± enfolding sepals, apex acute.
(1–)3–12(–15) mm distant from sepals, lanceolate, linear, linear-oblong, oblanceolate, or narrowly to broadly triangular, 4–22(–30) × 1–4(–7) mm, margins entire or proximally lobed or toothed.
sepals 11–17 mm;
corolla white, 44–64(–70) mm.
sepals 9–15 mm;
corolla white or cream, (20–)25–48 mm.
Calystegia catesbeiana
Calystegia occidentalis
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).
Subspecies occidentalis and subsp. fulcrata are distinguished essentially by entire versus proximally lobed or toothed bract margins; the distinction is not absolute.
(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. Peduncles (1–)2–4-flowered; bract margins entire. | subsp. occidentalis |
1. Peduncles 1-flowered; bract margins proximally lobed or toothed. | subsp. fulcrata |
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USDA Plants Database
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