The Genus Porphyra C. Ag. (Rhodophyta-Bangiales) in the American South Atlantic. II. Uruguayan Species

New insights into the cryptic diversity of the North Atlantic–Mediterranean ‘Porphyra leucosticta’ complex:P. oliviisp. nov. andP. rosengurttii(Bangiales, Rhodophyta)

“…In P. leucosticta, archeospores have been observed in different strains of field-collected thalli (Berthold, 1882;Dangeard, 1931;Coll & de Oliveira Filho, 1976;Gargiulo et al, 1994) and asexual reproduction has also been observed in cultured individuals of this species collected from Germany (Kornmann, 1961) and from southern England (Holmes & Brodie, 2005). Archeospores and neutral spores were observed in P. olivii from Thessaloniki.…”

“…It was originally described by Thuret in 1863 from Cherbourg, France (Le Jolis, 1863) and has since been recorded from the north-east and north-west Atlantic, from Canada to Uruguay, and from the Mediterranean and Black Sea (e.g. Zinova, 1967;Zavodnik & Zavodnik, 1973;Coll & de Oliveira Filho, 1976;Bird & McLachlan, 1992;Gargiulo et al, 1994;Flores-Moya et al, 1997), but it has become apparent that the name has been used for more than one species (Brodie & Irvine, 2003) in both the North Atlantic and Mediterranean.…”

MOLECULAR ANALYSIS REVEALS CRYPTIC DIVERSITY IN PORPHYRA (RHODOPHYTA)1

“…Over 70 species of Porphyra have been described worldwide (Dawson 1954, Krishnamurthy 1972, Kurogi 1972, Corder0 1974, Coll and de Oliveira Filho 1976, Wang and Chiang 1977, Lindstrom and Cole 1992b, and new species continue to be described as floras elsewhere are examined (Nelson and Adams 1990).…”

Field and Culture Studies of Porphyra spiralis var. amplifolia Oliveira Filho et Coll (Bangiales, Rhodophyta) from Isla de Margarita, Venezuela

“…A comparison of present specimens was made with descriptions of other Porphyra species reported from the-North Atlantic (Rosenvinge 1909, Taylor 1957, Gayral 1958, 1966, Conway 1964a, 1964b, Ardre 1970, Coll and Cox 1977, Kornmann and Sahling 1977, South Atlantic (Taylor 1960, Isaac 1957, Graves 1969, Oliveira Filho and Cox 1975, Coll and Oliveira Filho 1976, John et al 1979, and the Pacific coast of South America (Dawson et al 1964, Acleto andEndo 1977 Both simple and highly divided blades were found growing together in all monthly collections (Fig. 3).…”

“…Although maximum species diversity occurs in boreal and cold temperate waters (Kito et al 1971, Kurogi 1972, Wynne 1972, Mumford and Cole 1977, an increasing number of species are now known from warm temperate and tropical regions (Diaz-Piferrer 1967, Oliveira Filho and Coll 1975, Coll and Oliveira Filho 1976, Coll and Cox 1977, Bula-Meyer 1977, Ogawa and Lewmanomont 1978, John et al 1979. In cold water habitats, the life history of Porphyra species typically involves a pronounced seasonal alternation between a conspicuous blade and microscopic filamentous conchocelis (Cole and Conway 1980).…”