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(A) Epiphytic ferns growing on tree trunks: Pleopeltis crassinervata; (B) Polypodium furfuraceum; (C) nectar droplet on nectary on adaxial surface of frond lamina base (×24), Pleopeltis crassinervata; (D) abaxial surface of lamina lobe of Polypodium furfuraceum with hydathodes (×40), two of which are indicated by arrows. Scale bars: (A, B) = 1 cm; (C, D) = 1 mm.
