Monographs Details: Dicksonia
Authority: Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
Description:Genus Description - Terrestrial; stems forming erect trunks, apices densely clothed with stiff golden brown to brown hairs; fronds large, not articulate, monomorphic (fertile laminae slightly contracted); stipes hairy; blades bipinnate-pinnatifid to tripinnate, coriaceous, with sparse hairs; veins free; sori marginal, indusia bivalvate, the innervalve fitting into the outer; sporangia with oblique annuli; spores tetrahedral; x=65.
(chosen by Presl, Suppl. Tent. Pterid. 135. 1836.): Dicksonia arborescens
Balantium Kaulf., Enum. Filic. 228. 1824. Lectotype (chosen by Maxon, J.
Wash. Acad. Sci. 12: 455. 1922): Balantium auricomum Kaulf. [= Dicksonia arborescens
Dicksonia is a genus of about 20 species, mostly of the temperate
Australasian areas, with three species thought to occur in
tropical America, generally at high elevations. There is one species
in Mexico. Dicksonia is allied to Cibotium, differing from
that genus by its erect trunk and nonglaucous abaxial laminae.
Another ally is Culcita, differing from Dicksonia by the distinct
trunks and the blades 3-pinnate or less divided (vs. trunkless and
the blades 4-pinnate).