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1 Plants, glandular: peduncles, sepal exteriors, and lower leaf surfaces and leaf margins stipitate glandular; stems densely puberulent; [narrow endemic of the Nashville Basin of the Cumberland River Valley of TN] | |
1 Plants eglandular. | |
3 Lower leaf surface and sepal exteriors densely pubescent with villous and sericeous hairs; sepal exterior COLOR; pubescence entirely covering the epidermal tissue space between the raised second and tertiary veins; [endemic to limestone escarpment barrens of the Cumberland Plateau of ne. AL, nw. GA, and TN] | |