English: Whisk ferns.
Clades:
Equisetales;
Equisetidae;
Equisetanae;
Pteridophyta;
Plants.
Members: 2 genera: Psilotum; Tmesipteris; ± 12 species.
TaxonomyIn the Ppg1 classification
Psilotaceae is its own order
Psilotales , in the subclass Ophioglossidae, together with the
Ophioglossales.
BotanyRoot: unbranched; hairs absent.
Leaves: collateral vascular bundles.
Gametophyte: nonphotosynthetic, often subterranean, mycorrhizal; root absent; reduced, veins 1 or 0 sporangia 2–3, fused: synangium.
Stages Remedies1
Psilotum nudumx
Tmesipteris tannensis