English: Royal fern family; Flowering ferns.
Clades:
Equisetales;
Equisetidae;
Equisetanae;
Pteridophyta;
Plants.
Members: Claytosmunda, Leptopteris, Osmunda, Osmundastrum, Plenasium, Todea; 18–25 known species.
TaxonomyIn the Ppg1 classification
Osmundaceae is part of
Osmundales, in the Leptosporangiate ferns. Leptopteris and Todea can be seen as tree ferns with short trunks under 1 meter tall.
Plant theoryIn the
Plant theory Osmundaceae is a family in the order
Equisetales.
Osmundaceae is placed in subphase 6.
BotanyFern; large; ancient, fairly isolated clade.
Sporangia: single-layered with annulus: leptosporangia; annulus lateral on sporangium, opening apically; borne naked on non-laminar pinnules, while Todea and Leptopteris naked on laminar pinnules.
Stages Remedies1
Leptopteris fraseri3
Osmunda banksiifolia7
Todea barbara10
Osmunda regalis15
Claytosmunda claytoniana16
Osmundastrum cinnamomeumx
Osmorhiza longistylisx
Osmunda claytoniana