1. 
   Oak Fern
   (Dryopteris) This is a large group of ferns, which are all pretty easy to cultivate, whether they are hardy or tender. D. Filix-mas (the Male fern) has fronds up to 2 feet long and a foot wide. They are great for placing in open woodland or for shady spots. D. erythrosora, a native of Japan, grows f...
   Found op http://www.botany.com/dryopteris.html
   
   
2. 
   oak fern
   [n] - bright blue-green fern widely distributed especially in damp acid woodlands of temperate northern hemisphere
   Found op http://www.webdictionary.co.uk/definition.php?query=oak%20fern
   
   
3. 
   oak fern
   Gymnocarpium dryopteris noun bright blue-green fern widely distributed especially in damp acid woodlands of temperate northern hemisphere
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=oak%20fern
   
   
4. 
   Oak Fern
   Oak fern (Thelypteris dryopteris) is a graceful, light green polypody fern, with a creeping rhizome, found in acid woodlands of the northern hemisphere.
   Found op http://www.probertencyclopaedia.com/browse/BO.HTM
   
   
5. 
   Oak-Leaved Fern
   (Polypodium) These are leaf-losing (deciduous) and hardy evergreen Ferns that are found in many parts of the world including tropical, semitropical and temperate areas. Some may be cultivated in hothouses and some in cool greenhouses. The bright green leaves are thin and tough and may vary from only...
   Found op http://www.botany.com/polypodium.html
   
   
6. 
   oakfern
   1) Forest plant with triangular fronds 2) Woodland plant with triangular fronds
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/oakfern/1
   
   

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