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Ipomoea
See list of 8 species in this genus-
1a. Corolla usually red (but white and yellow forms are known), ± salverform with an elongate, narrow, tube-like, basal connate portion; stamens and style exserted from the corolla
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2a. Leaf blade pinnately divided into 11–31 linear segments; sepals obtuse to short-apiculate, lacking prolonged awns
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2b. Leaf blade entire to lobed with 3–7 lanceolate to ovate lobes, but not divided; sepals with evident, elongate, terminal or subterminal awns
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3a. Calyx (5–) 6–8 (–9) mm long; fruits reflexed
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3b. Calyx 4–4.5 mm long; fruits erect
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1b. Corolla blue to purple or pink to white, funnelform to nearly campanulate [Fig. 592], the basal connate portion expanding from below the middle; stamens and style not exserted from corolla [Fig. 592]
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4a. Stigmas 3-lobed; ovary 3-locular; sepals conspicuously hirsute on the basal half
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5a. Leaf blades usually entire; sepals 10–15 mm long, acute to acuminate at apex
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5b. Leaf blades usually 3-lobed [Fig. 592]; sepals 15–25 mm long, with a linear, spreading to recurved tip
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4b. Stigmas 2-lobed or entire; ovary 2-locular; sepals glabrous or sparsely villous on the basal half
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6a. Corolla abaxially white below, the limb usually blue to blue-purple (fading to red-purple)
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6b. Corolla abaxially white throughout (rarely pink to pale purple)
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7a. Corolla white (rarely pink to pale purple), 10–23 mm long; sepals 10–15 mm long, acuminate at the apex, often abrubtly so, hirsute-ciliate along the margin
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7b. Corolla white with a red to purple center, 50–80 mm long; sepals 13–20 mm long, obtuse or rounded at the apex, eciliate
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Each photo represents one species in this genus.