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Fig. 3. Columns of species of the subtribe Maxillariinae with Type 3 pollinarium: A, Maxillaria leucaimata; B, M. robusta; C, M. ochroleuca; D and E, column of M. uncata with pollinarium Type 4; F, pollinarium Type 4 of M. uncata. Ps, pollinium stalk; Rr, rostellar remnant; Ss, stigmatic surface; Vs, viscidium.
