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Cyathea is a genus of tree ferns, the type genus of the fern order Cyatheales. The genus name Cyathea is derived from the Greek kyatheion , meaning "little cup", and refers to the cup-shaped sori on the underside of the fronds.
Alsophila contaminans var. inermis Kurz ... Sphaeropteris brunoniana, synonym Cyathea brunoniana, is a fern in the family Cyatheaceae. [1] References
While the Cyatheales have been shown to be monophyletic through molecular analysis, no prominent morphological characteristics are common to the entire group. [4] Though loosely referred to as "tree ferns", most but not all members of the order possess the characteristic tree fern morphology: the rhizome is massive, woody, and rather than creeping horizontally below or on the ground, it stands ...
A tree fern near Belles, Dominica Alsophila sp. tree ferns overlooking a valley in Misamis Oriental, Philippines. Tree ferns are arborescent (tree-like) ferns that grow with a trunk elevating the fronds above ground level, making them trees.
Three tentative clades have been developed: Alsophila, Cyathea, and Sphaeropteris. These are frequently used as genus names. Cnemidaria, Trichopteris (or Trichipteris), and Nephelea (or Nephelia) have also been suggested as genera. Initially, indusium and scale morphology were used to organize the Cyatheaceae into taxonomic ranks.
Cyathea princeps (Linden) E.Mayer bis, nom. illeg. Sphaeropteris horrida is a tree fern in the family Cyatheaceae , and grows in southern Mexico and Central America. [ 1 ] It is the largest species of tree fern in North America, growing up to 65 feet (20 metres) in height with fronds up to 13 ft (4 m) in length.
Cyathea delgadii is a widespread species of tree fern. It is native to Central America ( Costa Rica , Nicaragua and Panama ), and much of South America ( Colombia , Guyana , Venezuela , Bolivia , Ecuador , Peru , Brazil , including Trindade , Argentina and Paraguay ). [ 1 ]
The known host for Ptechetelium cyatheae is the tree fern Cyathea stuebelii. [2] The fungus parasitizes host leaves, producing basidiocarps as small whitish patches that emerge through the stomata. Microscopically, the basidia are auricularioid (tubular with lateral septa) and emerge from thick-walled probasidia. The species has seldom been ...