444.40.00 CyathealesEnglish: Tree ferns.
Botanyferns; treeferns.
Leaves: hairs on the under side of the petioles;
pneumathodes, discrete vent lines, or patches, present on the rachis, petiole and rhizome,
Sporangia: the ring is oblique and complete, not interrupted by the foot of the sporangium.
FamiliesOsmundalesOsmundaceae: Royal Fern
Family; 4 genera, Osmundastrum, Osmunda, Todea, Leptopteris.
CyathealesThyrsopteridaceae Thyrsopteris.
Loxsomataceae: Loxsoma, Loxsomopsis.
Culcitaceae: Culcita.
Plagiogyriaceae: Plagiogyria.
Cibotiaceae: Cibotium.
Cyatheaceae: Alsophila, Cyathea, Gymnosphaera, Hymenophyllopsis, Sphaeropteris
Dicksoniaceae: Calochlaena, Dicksonia, Lophosoria.
Metaxyaceae: Metaxya.