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Kelloggia is an herbaceous perennial with small clusters of stems that are 1-6 dm high and arising from spreading rhizomes. The narrowly lance-shaped, opposite leaves are 15-50 mm long and have smaller leaves in their axils. Foliage is glabrous. Flowers are borne on long stalks in open, leafy inflorescences. The white or pink, tubular corolla is 4-8 mm long. It has 4 narrow, spreading, hairy lob...