Fungi named in 1939

Tricholomopsis rutilans, commonly known as plums and custard, or red-haired agaric, is a species of gilled mushroom found across Europe and North America.

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Tricholomopsis decora, commonly known as prunes and custard, is a species of gilled mushroom in the genus Tricholomopsis. It occurs in North America and Britain.

Rhodocollybia maculata, commonly known as the spotted toughshank, is a species of basidiomycete fungus in the family Omphalotaceae. R. maculata is a source of collybolide, a sesquiterpenoid containing a furyl-ẟ-lactone motif reminiscent of salvinorin A.

Trametes pubescens is a small, thin species of polypore, or bracket fungus. It has a cream-colored, finely velvety cap surface. Unlike most other turkey tail-like species of Trametes, the cap surface lacks strongly contrasting zones of color. Trametes pubescens is an annual, saprobic fungus, a decomposer of the deadwood of hardwoods, growing in clusters on logs, stumps and downed branches. (It is rarely reported on conifer wood.) It is a purported plant pathogen, infecting peach and nectarine trees. It is inedible. The genome of T. pubescens has been published in 2017 by Zoraide Granchi and

Rhodocollybia is a genus of Basidiomycete mushroom. Species in this genus, formerly classified as a subgenus in Collybia, have fairly large caps (typically larger than 5 centimetres (2.0 in) broad), and have a pinkish-tinted spore print. Microscopically, they are characterized by having spores and basidia that are dextrinoid—staining deep reddish to reddish-brown with Melzer's reagent when tested for amyloidity. Rhodocollybia species are commonly found in temperate North America and Europe, and infrequently in Central and South America.

Tricholomopsis is a genus of fungi in the family Phyllotopsidaceae. Its best known member and type species is Tricholomopsis rutilans. The name means appearing like Tricholoma. The genus has a widespread distribution, and contains about 30 species. Tricholomopsis was described in 1939 by German mycologist Rolf Singer.

Lactarius mairei is a member of the large milk-cap genus Lactarius in the order Russulales. Originally found in Morocco, it was described as new to science in 1939 by Georges Jean Louis Malençon.

Russula nana is a species of agaric fungus in the family Russulaceae. First described in 1905 as variety of Russula emetica, it was given distinct species status by Killermann in 1936. It is found in Europe.

Melanoleuca verrucipes is a species of fungus in the family Tricholomataceae. It is described as being a "very distinct species with its blackish dotted stipe." It was reportedly first discovered on leaf mulch in Highgate Woods, north London. The edibility of the mushroom is not known with certainty.

The Niessliaceae are a family of fungi in the phylum Ascomycota, class Sordariomycetes. The family was updated in 2020.

Cyclocybe is a genus of fungi belonging to the family Tubariaceae. The genus has a cosmopolitan distribution.

Cladonia evansii, known as Evans' deer moss or Evans' reindeer moss, is a lichen in the family Cladoniaceae. It is found in the Southeastern United States, with a few instances in Cuba. The species was first formally named by Henry Nicollon des Abbayes.

Truncocolumella is a genus of fungi in the family Suillaceae, of the order Boletales. It was circumscribed by American mycologist Sanford Myron Zeller in 1939. The potato-like T. citrina is up to 7 cm broad. The spore mass is yellowish, darker in age. One field guide lists T. citrina as edible. David Arora cites one story that it may leave a licorice-like aftertaste that can persist for hours. To determine the odour of T. citrina, mature fruiting bodies were extracted in diethyl ether and analyzed by gas chromatography-mass spectroscopy (GC-MS). The two major odor compounds that were

Lactocollybia is a genus of agaric fungi in the family Marasmiaceae. The widespread genus contains 17 species, many of which are found in tropical areas.

Candelariella antennaria, or the pussytoes eggyolk lichen, is a lichen commonly distributed in North America, and has been observed in South America, Asia, Australia, and Europe. It is characterized by its gray thallus and bright yellow apothecia, as well as its very small size.

Amanita rubrovolvata, commonly known as the red volva amanita, is a species of fungus in the family Amanitaceae. The fungus produces small to medium-sized mushrooms, with reddish-orange caps up to 6.5 centimetres (2+1⁄2 inches) wide. The stems are up to 10 cm (4 in) tall, cream-coloured above the ring and cream to yellowish below it. The stem ends in a roughly spherical bulb at the base, which is covered with bright orange patches. First described scientifically by the Japanese mycologist Sanshi Imai in 1939, the fungus is widely distributed in eastern Asia. Neither its edibility nor toxicity

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Tranzschelia discolor is a plant pathogen in the family Uropyxidaceae. It can affect peaches (Prunus persica) in Oman, with angular, yellow spots being seen on leaf upper surfaces with orange sori on the undersides.

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Pseudotrichia is a genus of fungi in the family Melanommataceae.

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Neofabraea perennans is a plant pathogen.

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Gelopellis is a genus of fungi in the family Claustulaceae. The species in this relatively rare genus have fruit bodies that resemble the unopened egg of the stinkhorn Mutinus, with the columnella (sterile tissue extending up into or through the gleba) occupying the place where the compressed receptacle would be in the latter genus. The genus contains six species found in South America, Japan, and Australia.

Catenochytridium is a genus of fungi in the family Endochytriaceae. The genus contains six species known from Japan and North America.

Allothyrium is a genus of fungi in the Asterinaceae family. The relationship of this taxon to other taxa within the class is unknown (incertae sedis), and it has not yet been placed with certainty into any order. This is a monotypic genus, containing the single species Allothyrium marcgraviae.

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