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1 Mericarps either conspicuously and densely hispidulous to strigose or papillose to tuberculate; corolla 6-lobed; [section Richardia]. | |
2 Stems hirsute or villous near the tips, but progressively more sparsely so to glabrate toward the base; adaxial leaf surface glabrous to strigillose near the margins only, the median portion of the leaf blade glabrous; mericarps papillose to tuberculate, the adaxial surface closed to a narrow groove; annual. | |