Cnemidaria is a genus of small tree ferns in the family Cyatheaceae. They are subaborescent or marginally aborescent growing as tall as 3.5 m with a trunk (basically a single large stem) diameter of 7 cm.The fronds of the Cnemidaria are typically 1-3.5 m long and pinnate. The rachis is generally smooth but in some species it is slightly spiny. Presence or absence of spines has been used as a diagnostic factor to distinguish between species.
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