Ül. 6.1

Kasutatud materjal:

http://www.hansaplant.ee/?op=body&id=475&cid=861&cgid=

http://efloora.ut.ee/Sihva/species/3849.html

http://kingpool.hak.edu.ee/materjalid/T.%20Tuulik%20%F5piobjektid/S%D5NAJALGADE%20EOSELINE%20PALJUNDAMINE/roodjalg.html

http://www.hansaplant.ee/?op=body&id=1024&cid=2545&cgid=

https://en.wikipedia.org/wiki/Osmunda_regalis#/media/File:OsmundaRegalis.jpg

http://www.hansaplant.ee/?op=body&id=1024&cid=2546&cgid=

http://www.hansaplant.ee/?op=body&id=1024&cid=2541&cgid=

http://www.i-flora.com/steckbriefe/stammbaum/art/show/thelypteris-limbosperma.html