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Psilotaceae
Division/family description and thumbnail links to images of two species of Psilotum from Hawaii.
http://www.botany.hawaii.edu/faculty/carr/...
Division Psilotophyta
Description with links to images of Psilotum nudum and Tmesipteris tannensis.
http://www.esu.edu/~milewski/intro_biol_tw...
Phylum Psilophyta
Includes phylum description, and links to images of members of the Psilotaceae.
http://www.science.siu.edu/landplants/Psil...
Psilophyta
Profusely illustrated description focussed on morphology and evolution.
http://www.botany.hawaii.edu/faculty/webb/...
Introduction to the Psilotales
Includes descriptions of morphology and life history.
http://www.ucmp.berkeley.edu/plants/pterop...
Classification of Psilotophyta
Main entry in Systema Naturae 2000.
http://sn2000.taxonomy.nl/Main/Classificat...
Fork Ferns
Illustrated introduction to the five species of Psilotaceae found in New Zealand.
http://www.hiddenforest.co.nz/plants/forkf...
Psilotaceae
Description and illustration of anatomical structure of species in Hawaii
http://www.botany.hawaii.edu/faculty/webb/...
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