Fungi named in 1981

Mycena adscendens, commonly known as the frosty bonnet, is a species of fungus in the family Mycenaceae. The fungus produces small white fruit bodies (mushrooms) with caps up to 7.5 mm (0.3 in) in diameter that appear to be dusted with sugar-like granules. Caps are supported by thin, hollow stems up to 20 mm (0.8 in) long, which are set on a disc-like base. Its distribution includes Europe, Turkey and the Pacific coast of the United States. The fruit bodies grow on fallen twigs and other woody debris on the forest floor, including fallen hazel nuts. The variety carpophila is known from Japan.

Yarrowia lipolytica is a species of fungus in the family Dipodascaceae. It is notable for its use of unusual carbon sources, such as hydrocarbons. This has made it of interest for use in industrial microbiology, especially for the production of specialty lipids.

Yarrowia is a fungal genus in the family Dipodascaceae. For a while the genus was monotypic, containing the single species Yarrowia lipolytica, a yeast that can use unusual carbon sources, such as hydrocarbons. Molecular phylogenetics analysis has revealed several other species that have since been added to the genus.

Hymenagaricus is a genus of fungi in the family Agaricaceae. The widespread genus contains species found largely in tropical regions. Hymenagaricus was circumscribedby Belgian mycologist Paul Heinemann in 1981. The origin of Hymenagaricus has been traced back 51.83 million years ago in Thailand.

Entoloma politum is a species of fungus in the Entolomataceae family. It is found in Europe and North America.

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Chrysothrix chlorina, the sulphur dust lichen, is a species of leprose (powdery) crustose lichen in the family Chrysotrichaceae. Originally described scientifically by the Swedish lichenologist Erik Acharius over 200 years ago, it has been shuffled to many different genera in its taxonomic history before finally being transferred to Chrysothrix in 1981. The lichen has a circumboreal distribution, meaning it occurs in northern boreal regions across the planet. It is typically saxicolous (rock-dwelling), particularly on the underside of rock overhangs, but has in rare instances been recorded

Resinomycena is a genus of fungi in the mushroom family Mycenaceae. The genus contains at least eight species found in North America, Europe (including the United Kingdom and the Canary Islands) and eastern Asia (including Japan). This genus of small white to tan colored agarics is saprophytic and colonizes leaf litter, bark, small twigs and decaying monocot vegetation. The fruitbodies are small and resemble Mycena or Marasmius or Hemimycena and are distinguished by amyloid spores, poorly dextrinoid tissues, and the abundant oily, resinous cystidia on the pileus, lamellae edges and stipes.

Leccinum schistophilum is a species of bolete fungus in the family Boletaceae. Found in Europe, where it grows in association with birch, it was described as new to science in 1981 by French mycologist Marcel Bon.

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Chrysothrix candelaris, commonly known as the mustard powder lichen or gold dust lichen, is a species of leprose (powdery) lichen in the family Chrysothricaceae. It typically grows on tree bark, although it has also been recorded growing on rock. It does not show ascocarps or other reproductive structures, belonging to the group commonly known as the 'Fungi or lichens imperfecti' in the UK.

Afroboletus is a genus of fungi in the family Boletaceae. The genus, circumscribed in 1981, contains seven species found in tropical Africa.

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Conocybe rugosa is a common and highly toxic species of mushroom that is widely distributed in Eurasia and North America.

The Bertiaceae are a family of fungi in the Ascomycota, order Coronophorales.

Amarenomyces is a genus of fungi in the family Phaeosphaeriaceae. A monotypic genus, it contains the single species Amarenomyces dactylidis Mapook, Camporesi & K.D. Hyde (2017) A former species A. ammophilae (Lasch) O.E. Erikss. (1981) is now Amarenographium metableticum (still in the same Phaeosphaeriaceae family). The associated anamorph is the genus Amarenographium.

Tylothallia is a genus of lichen in the family Lecanoraceae. It was circumscribed by German lichenologist Harald Kilias in 1981.

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Pegleromyces is a genus of fungi in the family Tricholomataceae. It is a monotypic genus, containing the single species Pegleromyces collybioides, found in Brazil, and described as new to science by mycologist Rolf Singer in 1981. The genus name of Pegleromyces is in honour of David Pegler (b.1938), who is a British mycologist.

Inonotus hastifer, is a species of fungus in the family Hymenochaetaceae, first described by Zdeněk Pouzar in 1981.

Hebeloma gigaspermum is a European species of mushroom in the family Hymenogastraceae.

Hebeloma fusisporum is a species of mushroom in the family Hymenogastraceae.

Grahamiella is a genus of fungi in the family Helotiaceae. The genus contains 3 species.

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Diaporthe helianthi is a fungal pathogen that causes Phomopsis stem canker of sunflowers. In sunflowers, Phomopsis helianthi (teleomorph =Diaporthe helianthi) is the causative agent behind stem canker. Its primary symptom is the production of large canker lesions on the stems of sunflower plants. These lesions can eventually lead to lodging and plant death. This disease has been shown to be particularly devastating in southern and eastern regions of Europe, although it can also be found in the United States and Australia. While cultural control practices are the primary method of controlling

Degelia is a genus of lichen-forming fungi in the family Pannariaceae. The genus is named after Swedish lichenologist Gunnar Degelius. The genus was circumscribed by Lars Arvidsson and David John Galloway in 1981.

Singerina is a fungal genus in the family Agaricaceae. It is a monotypic genus, containing the single species Singerina indica, found in Maharashtra, southwest India. The genus name of Singerina is in honour of Rolf Singer (1906–1994), who was a German-born mycologist and one of the most important taxonomists of gilled mushrooms (agarics) in the 20th century.