Cibotium schiedei
Cibotium schiedei - Mexican Treefern

IDENTIFYING FEATURES:
*  soft wispy reddish hairs on crown & stipe base, becoming quite silvery white as the crozier opens
*  narrow pinnules with very long tapered tips
*  sori often extending beyond the leaf margin (especially near the tips of the pinnules), so as to be visible from the top of the frond, and giving fertile pinnae a quite different appearance to sterile pinnae