The New Zealand species ofPolysiphoniaGreville (Rhodophyta)

Abstract

Fifteen species of Polysiphonia are recognised from New Zealand and the outlying islands -Three Kings, Chatham, Bounty, Snares, Antipodes, Auckland, and Campbell Islands. Of these, 11 species are considered to be indigenous including the newlydescribed P. pernacola N.M. Adams. One species, P. brodiaei, is almost certainly adventive, while P. sertularioides, P. subtilissima, and P. constricta are apparently so. Of the 15 species, 8 belong to the subgenus Oligosiphonia and 7 to the subgenus Polysiphonia.

Polysiphonia sensu lato (Ceramiales, Florideophyceae) species of Caribbean Panama including Polysiphonia lobophoralis sp. nov. and Polysiphonia nuda sp. nov.

“…Other sources As Polysiphonia sertularioides , Womersley 1979, Adams 1991as P. fl accidissima , Hollenberg 1942, 1961, 1968a, Abbott and Hollenberg 1976, Hollenberg and Norris 1977, Kapraun and Norris 1982, Kapraun et al 1983, Abbott 1999 . Cluster analyses of rbc L and COI sequence data showed that these species were clearly distinct from one another (Figures 2 and 3).…”

“…Samples were dried in silica gel desiccant (Chase and Hills 1991 ) and deposited in the silica collection at the Center for Marine Science, University of North Carolina at Wilmington. Samples were grouped into genetic species by MAI (see below; Yang et al 2008 , Clarkston and, and identifi ed to morphological species based on examinations of morphological characters and use of taxonomic guides ( B ø rgesen 1918, Setchell and Gardner 1930, Hollenberg 1942, 1958, 1961, 1968a,b , Taylor 1945, Dawson 1964, Abbott and Hollenberg 1976, Hollenberg and Norris 1977, Kapraun 1977, 1980a, Womersley 1979, 2003, Kapraun and Norris 1982, Kapraun et al 1983, Adams 1991, Schneider and Searles 1991, Abbott 1999, Littler and Littler 2000, Dawes and Mathieson 2008. Permanent slide vouchers were made following Tsuda and Abbott (1985) and deposited in the University of North Carolina Wilmington Herbarium (WNC) and the United States National Herbarium (US).…”

Polysiphonia ulleungensis sp. nov. (Rhodomelaceae, Rhodophyta): a new diminutive species from Korea belonging to Polysiphonia sensu stricto

“…P. pacifica is distinguished by the lax texture and distichous branches (Hollenberg 1942). P. pernacola is distinguished by the absence of trichoblasts and conspicuous urceolate cystocarps (Adams 1991). P. scopulorum differs by the rigid texture of filaments, presence of adventitious erect branches and cicatrigenous branching, absence of sterile tip cells in spermatangial branches, and slightly spiral tetrasporangia arrangement (Womersley 1979, see Fig.…”

Taxonomic reassessment ofPolysiphonia foetidissima(Rhodomelaceae, Rhodophyta) and similar species, includingP. schneideri, a newly introduced species in Europe

“…Variation between our 12 collections from the Iberian Peninsula and the sequence produced for material collected in Florida (by Mamoozadeh & Freshwater, 2011, as N. tepida;) is clearly lower (< 0.4%) than the separation between P. foetidissima and P. isogona. Furthermore, there are differences in some morphological traits, since P. isogona has (8 or) 9 or 10 (or up to 12) pericentral cells and wider axes (250-300 µm in diameter) than P. foetidissima (Adams, 1991;Womersley, 2003). Furthermore, according to Adams (1991), P. isogona has trichoblasts borne on every segment (but see Womersley, 2003, for a different interpretation of their arrangement).…”

“…Furthermore, there are differences in some morphological traits, since P. isogona has (8 or) 9 or 10 (or up to 12) pericentral cells and wider axes (250-300 µm in diameter) than P. foetidissima (Adams, 1991;Womersley, 2003). Furthermore, according to Adams (1991), P. isogona has trichoblasts borne on every segment (but see Womersley, 2003, for a different interpretation of their arrangement). Polysiphonia schneideri was recently described from Atlantic North America and Bermuda (Stuercke & Freshwater, 2010).…”