Introduction Multicellular benthic chrysophytes have been rarely reported from the Mediterranean. True marine species are actually represented only by two taxa with filamentous and palmelloid habit respectively Tribonema marinwn J. Feldmann and Pulvinaria giraudii (Derbes ei Solier in Castagne) Bourrelly. Tribonema marinwn (Tribonematales, Tribophyceae) occurs in the western area of the Mediterranean (Feldmann 1941, Coppejans and Boudouresque 1983, Ballesteros et 1986, Sartoni and Sonni 1991). Pulvinaria girattdii (Sarcinochrysidales, Chrysophyceae) is known from the Mediterranean (Castagne 1851, Verlaque 1987) and the Red Sea (Nasr 1941). During a field survey along the Tuscan Archipelago shores a pseudodichotomously branched chrysophyte, whose morphology agrees with Chrysonephos lewisii (Taylor) Taylor, was found growing as delicate epiphytic tufts on various macroalgae, bryozoans and on the surface of dead portions of gorgonians. Our specimens have been compared with type material (Algae of Bermuda, Wm. Randolph Taylor and A. J. Bernatowicz coll., n. 49-1722, 11. iv. 1949, in MICH!) and found to be identical. The monotypic genus Chrysonephos was established by Taylor (1952) to replace Chrysophaeum nom. illegit., using material collected in Florida and Bermuda (Taylor 1951). For many years C. lewisii was not reported from any other localities, but recently this species has been found
Botanica Marina – de Gruyter
Published: Jan 1, 1995
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