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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Growth and development of Nivatogastrium, a gastromycete related to Pholiota

Ray, Ilene Baxter January 1974 (has links)
The morphological features of <i>Nivatogastrium nubigenum</i> are compared with closely related gastromycetes and lamellate agarics. Only one genus, <i>Pholiota</i> in the Cortinaricaeae, was found to have many features similar to <i>N. nubigenum</i>. The subgenus <i>Flammuloides</i> has many features in common with this gasteromycete. The fruiting bodies and cultural characteristics of <i>P. decorata, P. scamba, P. spumosa, and P. subangularis</i> are compared with <i>N. nubigenum</i>. All of the fungi studied are found in the western United States on conifer wood. Smooth, brown, thick-walled spores, large cystidia, and a somewhat visicid pileus are found in these species. Thick-walled cystidia, similar to those found in <i>P. decorata</i>, are reported for the first time in <i>N. nubigenum</i>. Growth rates, oxidase reactions, and morphological features were found to be similar for <i>N. nubigenum, P. decorata. and P. spumosa</i>. Positive oxidase tests, oidia, amorphous refractive bodies, "textura intricata" and inflated hyphal cells were found in these three similar species. Different media were used and additional morphological features were found that can be used to distinguish the species. / Master of Science

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