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Key to Diervillaceae

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1 Corolla 12-20 mm long, zygomorphic, yellow to orangish; capsules glabrous; petioles glabrous to sparsely pubescent; [native]
1 Corolla 25-30 mm long, nearly actinomorphic, white or pink to red; capsules pubescent; petioles densely pubescent; [cultivated exotic, rarely persistent or weakly naturalized]