tectaria

from The Century Dictionary.

• noun A genus of univalves, of the family Littorinidæ, with a turbinate or conic shell, more or less tuberculated or spinous, represented by various species in the tropical seas. A typical example is T. pagoda, of the Pacific.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun terrestrial or epilithic ferns of tropical rain forests