Young resembling parents, but penultimate instar passive and enclosed in a filmy pellicle.

The leaves are large and pinnate; their lamina is usually thick, though filmy species of Todea occur.

It generally makes its nest in a hollow branch, plastering up the opening with clay, leaving only a circular hole just large enough to afford entrance and exit; and the interior contains a bed of dry leaves or the filmy flakes of the inner bark of a fir or cedar, on which the eggs are laid.

Although these tiny Filmy Ferns are hardy and beautiful, yet the conditions for their successful culture occur so seldom that in a general sense they cannot be used with effect in the open air.

Whether she is comfortable in a rich yet modest fabric or the sheerest and shortest of filmy threads, her lingerie is as intimate as every curve it is designed to hug.