Claussenomyces

{{Short description|Genus of fungi}}

{{Automatic taxobox

| image = Claussenomyces prasinulus 415175.jpg

| image_caption = Claussenomyces prasinulus growing on Australian blackwood

| taxon = Claussenomyces

| authority = Kirschst. (1923)

| type_species = Claussenomyces jahnianus

| type_species_authority = Kirschst. (1923)

| subdivision_ranks = Species

| subdivisions =

}}

Claussenomyces is a genus of fungi in the family Helotiaceae. Species grow as saprophytes on decaying and decorticated wood, cones, or sap. Fruitbodies are turbinate (having the shape of an inverted cone) to pulvinate (shaped like a cushion), measuring up to 0.6 mm in both height and diameter. The flesh has an elastic to gelatinous texture.

The genus name of Claussenomyces is in honour of Peter Heinrich Claussen (1877-1959), a German doctor and botanist (Mycology), Professor of Botany

and Director of the Botanical Garden at the University of Marburg.{{cite book | last=Burkhardt | first=Lotte | title=Eine Enzyklopädie zu eponymischen Pflanzennamen |trans-title=Encyclopedia of eponymic plant names | publisher=Botanic Garden and Botanical Museum, Freie Universität Berlin | year=2022 | isbn=978-3-946292-41-8 | url=https://doi.org/10.3372/epolist2022|format=pdf |language=German |location=Berlin | doi=10.3372/epolist2022 | s2cid=246307410 |access-date=January 27, 2022}}

The genus was circumscribed by Wilhelm Kirschstein in Verh. Bot. Vereins Prov. Brandenburg Vol.65 on page 122 in 1923.