Classification of Psilotophyta - http://sn2000.taxonomy.nl/Main/Classification/95997.htm
Main entry in Systema Naturae 2000. |
Division Psilotophyta - http://www.esu.edu/~milewski/intro_biol_two/lab_2_moss_ferns/Psilophyta.html
Description with links to images of Psilotum nudum and Tmesipteris tannensis. |
Fork Ferns - http://www.hiddenforest.co.nz/plants/forkferns/forkferns.htm
Illustrated introduction to the five species of Psilotaceae found in New Zealand. |
Introduction to the Psilotales - http://www.ucmp.berkeley.edu/plants/pterophyta/psilotales.html
Includes descriptions of morphology and life history. |
Psilophyta - http://www.botany.hawaii.edu/faculty/webb/BOT201/PSILOTUM/Psilophyta-1.htm
Profusely illustrated description focussed on morphology and evolution. |