The Phyllophoraceae (Gigartinales, Rhodophyta) from Peru with descriptions of Acletoa tarazonae gen. & sp. nov. and Gymnogongrus caespitosus sp. nov. Issue 6 (1st November 2017)

• Record Type: Journal Article
• Authors: Calderon, Martha S.; Boo, Sung Min
• Is Part Of: Phycologia. Volume 56:Issue 6(2017)
• Page Start: 686
• Page End: 696
• Publication Date: 2017-11-01
• Subjects: Ahnfeltiopsis -- Female reproductive structure -- Gymnogongrus -- Peru -- rbcL -- Systematics; Algology -- Periodicals; Algae -- Periodicals; Algae; Natuurkunde; Algae; Periodicals; Electronic journals; 579.805
• DOI: 10.2216/16-126.1
• Languages: English
• ISSNs: 0031-8884

Abstract

Abstract: We investigated species in the family Phyllophoraceae from Peru using sequences of the plastid rbc L sequences and morphological examination. Here we describe Acletoa tarazonae gen . & sp. nov ., characterized by the presence of secondary medullary cells around cystocarps, gonimoblast initials that are downwardly and upwardly directed, and a linear arrangement of gonimoblast filaments on medullary cells. Acletoa tarazonae consistently formed a clade with Ahnfeltiopsis vermicularis and Chilean Gymnogongrus sp., and this clade was distinct from other genera in the Phyllophoraceae in the rbc L phylogeny. We also describe a new species of the Phyllophoraceae, Gymnogongrus caespitosus sp. nov ., from northern Peru, characterized by a semirigid and flattened thallus, narrow branches, absence of hair cells, and cystocarps immersed in a single cavity. Ahnfeltiopsis concinna was not distinct from Ahnfeltiopsis durvillei, and consistently grouped in the genus Gymnogongrus sensu stricto in the rbc L phylogeny. A new combination of Gymnogongrus durvillei comb. nov . was made on the basis of A. durvillei, and A. concinna was merged with G. durvillei .