학술논문
Lithothamnion superpositum ( Corallinales; Rhodophyta): First description for the Western Atlantic or rediscovery of a species?
Document Type
Article
Author
Source
Subject
*CORALLINE algae
*RED algae
*MARINE algae
*SPECIES
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Language
ISSN
1322-0829
Abstract
Nongeniculate Corallinaceae are poorly known in Brazil. In our endeavor to identify this group of seaweeds along the Brazilian coast we came across some specimens that fit well into the accepted circumscription of Litothamnion Heydrich. Within this genus they could be identified to what has been called L. superpositum Foslie. The specimens were represented by nongeniculate, free living specimens (rhodoliths); lumpy to fruticose growth-form, presenting flared epithallial cells in transversal section; multiporate tetrasporangial conceptacles, with roof protruding above or flush with the surrounding thallus surface; chambers 250–525 µm in diameter and 150–230 µm high, roof structured by filaments with 3–5 cells long; and pores in depression. Among the species described from the Brazilian coast, L. heteromorphum (Foslie) Foslie presented anatomical and reproductive characteristics similar to the referred species described from southern Africa and Australia. Therefore, we propose to consider L. heteromorphum as a heterotypic synonym of L. superpositum and extending its distribution to the Western Atlantic. [ABSTRACT FROM AUTHOR]