Fungi named in 1865

The Nectriaceae are a family of fungi in the order Hypocreales. The group was first circumscribed in 1865 by the French mycologists Charles and Louis Tulasne. According to a 2020 taxonomic review published in the journal Mycosphere, the family comprised 70 recognized genera and approximately 1,336 species. It is a highly diverse group with a worldwide distribution and it has higher diversity in warm temperate and tropical regions (Rossman et al. 1999; Rossman 2000; Chaverri et al. 2011, Schroers et al. 2011, Hyde et al. 2014, Lombard et al. 2015,). Several authors have studied and revised the

Cladonia portentosa, also known as reindeer lichen or the cream cup lichen, is a light-coloured, fruticose, cup lichen in the family Cladoniaceae. A similar-looking species, also known by the common name "reindeer lichen", is Cladonia rangiferina.

Pezicula (syn. Ocellaria) is a genus of fungi in the family Dermateaceae. It was first described by the brothers Charles and Louis René Tulasne in 1865. The genus contains 37 species.

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Spilonema revertens, the rock hairball lichen, is a species of fruticose lichen in the family Coccocarpiaceae. This dark-coloured cyanolichen forms small, dense cushions on rocks across the Northern Hemisphere. Found in Europe, Asia, North America, Macaronesia, and Greenland, it typically grows on exposed rocks that experience alternating wet and dry periods. The species is most commonly found in lower mountain zones, particularly in open coniferous forests and rocky steppes, though it also occurs in coastal areas. First described in 1865 from specimens collected in Finland, it is distinctive

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Naetrocymbe is a genus of about 20 species of fungi belonging to the family Naetrocymbaceae. These fungi typically live embedded in the bark of smooth-trunked trees and are barely visible except for tiny dark dots that contain their spores. Most species function primarily as bark-dwelling fungi, with only some forming casual partnerships with algae to create lichens. The genus was established in 1865 by Gustav Wilhelm Körber, with the name derived from Greek words meaning 'spindle' and 'boat' in reference to the characteristic spore shape. These fungi reproduce through flask-shaped structures

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Cercidospora is a genus of fungi in the class Dothideomycetes. The relationship of this taxon to other taxa within the class is unknown (incertae sedis). The genus was first described by Gustav Wilhelm Körber in 1865; it is synonymous with the name Prolisea described by Frederick Edward Clements in 1931.

Tremotylium is a genus of lichen-forming fungi in the family Graphidaceae. The genus was circumscribed by Finnish lichenologist William Nylander in 1865, but it was not published validly. He validated the genus and assigned T. angolense as the type species in 1868.

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Rhagadostoma is a genus of fungi in the family Nitschkiaceae. All species in the genus are lichenicolous, meaning they live parasitically on lichens.

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Karschia is a genus of fungi in the class Dothideomycetes. The relationship of this taxon to other taxa within the class is unknown (incertae sedis). The genus name of Karschia is in honour of Anton Ferdinand Franz Karsch (1822-1892), who was a German doctor and botanist. He was in 1852, Professor of Medicine in Münster. The genus was circumscribed by Gustav Wilhelm Körber in Parerga Lichenol. on page 459 in 1865.

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Pyrenidium is a genus of lichenicolous (lichen-dwelling) fungi. It is the only genus in the family Pyrenidiaceae. It has 13 species.

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Leciophysma is a genus of cyanolichens in the family Pannariaceae. It has four species. The genus was circumscribed by Theodor Magnus Fries in 1865, with Leciophysma finmarkicum assigned as the type species.

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