The following new parasitic Ascomycetes on macroalgae are described: ffaloguignardia cystoseirae Kohlm. et Demoulin sp. nov. (on Cystoseira balearica Sauvageau from Corsica),Mycosphaerella apophlaeae Kohlm. sp. nov. (on Apophlaea lyallii Hook. f. et Harv., New Zealand), Polystigma apophlaeae Kohlm. sp. nov (same host and distribution as the foregoing). Pontogeneia erikae Kohlm. sp. nov. lives in association with Ectocarpus (?) sp. on the surface ofEgregia menziesii (Turn.) Aresch. in California. Sargassum undulatum J. Ag. is a new host record for Haloguignardia tumefaciens (Cribb et Herbert) Cribb et Cribb in New Zealand, and Sphaceloma cecidii Kohlm. a hyperparasite on galls caused by Haloguignardia spp., is recorded for the first time from the Mediterranean. Introduction Knowledge on algicolous higher marine fungi is scarce because most research in marine mycology has been conducted on species from other substrates, in particular from wood. Among 32 parasitic higher fungi known to occur on algae there are 31 Ascomycetes and one Deuteromycete, and 9 other Ascomycetes live in symbiotic associations with marine algae (Kohlmeyer and Kohlmeyer 1979). In the following, four new algicolous Ascomycetes are described and new records of two other species are listed. Only five algae-inhabiting species of higher fungi were recorded from the
Botanica Marina – de Gruyter
Published: Jan 1, 1981
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