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2 Upper stem and inflorescence covered with tomentum; inflorescence corymbose; tepals with bright yellow crest of moniliform hairs adaxially and tomentose abaxially; stamen filaments glabrous | |
2 Plants glabrous; inflorescence racemose; tepals ± papillate adaxially but lacking moniliform hairs, glabrous abaxially; stamen filaments densely hairy |