genus Psilotum


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Noun1.genus Psilotum - type genus of the Psilotaceae
fern genus - genera of ferns and fern allies
family Psilotaceae, Psilotaceae - small family of lower ferns having nearly naked stems and minute scalelike leaves
whisk fern - chiefly tropical clump-forming plants of skeletal appearance resembling whisk brooms; lacking roots