Definition that contains tree fern
- genus dicksonia tree ferns of temperate Australasia having bipinnatifid or tripinnatifid fronds and usually marginal sori; in some classification systems placed in family Cyatheaceae
- dicksoniaceae tree ferns: genera Dicksonia, Cibotium, Culcita, and Thyrsopteris elegans
- family dicksoniaceae tree ferns: genera Dicksonia, Cibotium, Culcita, and Thyrsopteris elegans
- dicksonia tree ferns of temperate Australasia having bipinnatifid or tripinnatifid fronds and usually marginal sori; in some classification systems placed in family Cyatheaceae