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Keys
  • Vascular plant groups
  • Club mosses
  • Ferns
  • Vegetative key to families
  • Gymnosperms
  • Flowering plants
  • Genera
  • Families

Polypodiaceae

Veins anastomosing Polypodiaceae
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Epiphytic or rupestral ferns with long-creeping rhizomes. Sori round or, if elongated and confluent, then 2–6.5 cm long. Scale-fronds absent
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Lamina densely tomentose with appressed, persistent, stellate hairs. Paraphyses stellate. Scales of the rhizome non-clathrate Pyrrosia
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Lamina glabrous or with a few clathrate scales along the veins. Paraphyses absent or with enlarged apices, never stellate. Scales of the rhizome clathrate at least towards the middle