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3. Calystegia purpurata (Greene) Brummitt, Ann. Missouri Bot. Gard. 52: 214. 1965.
[E]
Convolvulus luteolus A. Gray var. purpuratus Greene, Man. Bot. San Francisco, 265. 1894; C. occidentalis A. Gray var. purpuratus (Greene) J. T. Howell
Subshrubs, rootstock woody. Herbage glabrous. Stems ascending-decumbent, trailing, or twining-climbing. Leaves: blade ± triangular to ovate-triangular, 15–50 mm, base lobed, lobes spreading, rounded or 2(–3)-pointed. Bracts 3–10(–16) mm distant from sepals, linear, (2–)3–12(–16) × 0.4–1.5 mm, margins entire or proximally lobed or toothed. Flowers: sepals 7–14 mm; corolla white or cream to pale purple, usually purple-striped, (23–)26–46(–52) mm.
Subspecies 2 (2 in the flora): California.
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Stems strongly twining-climbing; leaf blades triangular, basal sinus V-shaped, apex acute; bract margins entire |
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3a Calystegia purpurata subsp. purpurata |
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Stems ascending-decumbent, trailing, or weakly twining-climbing; leaf blades ovate-triangular, basal sinus ± closed, apex emarginate to rounded; bract margins lobed or toothed |
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3b Calystegia purpurata subsp. saxicola |
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Lower Taxa
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