Adder's tongue ferns (Ophioglossaceae)

Ophioglossum coriaceum. Photo: Jeremy Rolfe.

The Ophioglossaceae is a family of ferns that includes adder tongues, grape ferns and moonworts. There are four genera worldwide: Botrychium, Ophioglossum, Helminthostachys and Mankyua.
 
Ferns in this family are characterised by several features:
  • A single leaf or frond that is divided into a sterile green blade and a fertile spike that supports embedded sporangia
  • Production of eusporangia (as opposed to leptosporangiate ferns)
  • Subterranean gametophytes

For more information see:

This page last updated on 29 May 2014