Erika Kohlmeyer

Distribution of Epichloë Typhina (Ascomycetes) and Its Parasitic Fly

Fresh and dried stromata of Epichloe typhina, the cause of choke disease of grasses, were examined for infections by a host-specific fly, Phorbia phrenione. Over 35% of 4,685 stromata from 17 count...

Is Ascophyllum nodosum Lichenized

In a recent synopsis on Ascophyllum nodosum (L.) LE JOLIS, BAARDSETH (1970) accumulates all Information available on this common brown alga. This author rnentions briefly the presence o£ fungal hyphae that are never absent from any part o£ Ascophyllum and expresses bis uncertainty about the question if these hyphae belong t o the Asconnycete, described from Ascophyllum^ namely Mycosphaerella ascophylli COTTON (1908). The regular occurrence of an endosymbiotic fungus in all Ascophyllum plants appears to be widely unknown or unnoticed among algologists, The association is not

Bermuda marine fungi

The marine mycota of Bermuda is almost identical with that of Florida and other subtropical and tropical zones. Host plants examined are Avicennia germinans (L.) L., Conocarpus erecta L., Rhizophora mangle L., Salicornia virginica L., Tamarix gallica L. and Thalassia testudinum Koenig. The collections include 15 ascomycetes, one basidiomycete and six deuteromycetes, all of which are new records for the Bermuda islands. New host records are Halocyphina villosa J. & E. Kohlm. on C. erecta; H. villosa, Hydronectria tethys J. & E. Kohlm. and Leptosphaeria australiensis (Cribb & Cribb) Hughes on T. gallica; and Lulworthia sp. on Th. testudinum. Halosarpheia fibrosa} J. & E. Kohlm. gen. et sp.nov. is a new saprobic marine ascomycete on A. germinans, R. mangle, T. gallica and other submerged substrates from Bermuda, Brazil and Florida. Ascospores of three Ascomycetes occur in sea foam along sandy beaches. Periconia prolifica Anast. develops on decomposing calcareous linings of shipworm tubes and also grows on and in dead mites attached to this substrate. A key to the filamentous higher marine fungi of Bermuda is presented.

Biology and Geographical Distribution of Spathulospora Species

SUMMARYAscospores of Spathulospora lanata form a short germ tube with a lobed appressorium from which the crustose thallus develops. Phialide- like antheridia originating on hairs give rise to spermatia that attach to trichogynes and induce formation of contact papillae. Most likely, these protuberances support the migration of the male nucleus into the female organ. Only one host cell is penetrated by fungal cells, but nutrients are apparently supplied from neighboring algal cells via pit connections. Ballia hirsuta is a new host for S. lanata. Collections of Ballia spp. from Kerguelen, Macquarie, and Antipodes Islands, Australia, New Zealand, and Argentina extend the known distribution of Spathulospora spp. considerably. Material of S. antarctica, gathered inadvertently with B. callitricha in 1840 during the “Erebus” and “Terror” Antarctic Expedition, is the oldest collection of a Spathulospora species. The apparent temperature dependency of Spathulospora spp. is discussed.

Marine Mycology: The Higher Fungi

Marine mycology: the higher fungi , Marine mycology: the higher fungi , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی