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1 Petioles glabrous or sparsely puberulent; leaves alternate but pseudo-verticillate (the internodes very short); leaf blades 3-8 (-12) cm long × 1.5-5 cm wide | |
1 Petioles lepidote-puberulent; leaves obviously alternate (well-spaced); leaf blades 1-4.5 cm long × 0.5-2.5 cm wide |