PETROGLOSSUM UNDULATUM SCHNEIDER (RHODOPHYTA, PHYLLOPHORACEAE) FROM BRAZIL

Petroglossum undulatum Schneider (Rhodophyta, Phyllophoraceae) is reco rded for the first time outside the deep water of North and South Caro lina. The apparently disjunct distribution of this species may be attr ibuted to insufficient collections in the intermediate geographic area s and to the similarity of the external morphology of this species to that of two species of Cryptonemia, with which it grows in association . A detailed description of Brazilian material and comparison with a t opotype of P. undulatum from North Carolina are given. Gametophytes we re known from the type collections and tetrasporangial plants are desc ribed here for the first time.