The Ostropales are an order of fungi in the class Lecanoromycetes. The order was circumscribed by Swedish botanist John Axel Nannfeldt in 1932. The order contains 4 families and 46 genera, including 6 genera of uncertain familial placement.
Unguiculariopsis is a genus of lichenicolous fungi in the family Cordieritidaceae. It has 29 species.
Lichenochora is a genus of fungi in the family Phyllachoraceae. It has 44 species. All species in the genus are lichenicolous, meaning they grow parasitically on lichens. The genus was circumscribed by Josef Hafellner in 1989, with Lichenochora thallina assigned as the type species.
Plectocarpon is a genus of lichens in the family Lecanographaceae.
Endococcus is a genus of lichenicolous (lichen-dwelling) in the family Lichenotheliaceae. It has 44 species. The genus was circumscribed by the Finnish botanist William Nylander in 1855. Although at least one source places the genus in the Verrucariaceae, a 2016 study of the type species, Endococcus rugulosus, determined that it should instead be placed in the family Lichenotheliaceae of the order Dothideales; this classification echoes a placement proposed in 1979 by David Hawksworth.
Pronectria is a genus of fungi in the family Bionectriaceae. It consists of 44 species, all of which are lichenicolous. The genus was circumscribed by American plant ecologist Frederic Clements in 1931.
Abrothallus is a genus of lichenicolous fungi. It is the only genus in the monotypic family Abrothallaceae, which itself is the sole taxon in the order Abrothallales.
Zwackhiomyces is a genus of lichenicolous fungi in the family Xanthopyreniaceae. The genus was circumscribed by Martin Grube and Josef Hafellner in 1990, with Zwackhiomyces coepulonus assigned as the type species.
Rhymbocarpus is a genus of lichenicolous (lichen-dwelling) fungi in the family Cordieritidaceae. It has 10 species. The genus was circumscribed by German mycologist Friedrich Wilhelm Zopf in 1896, with Rhymbocarpus punctiformis assigned as the type species.
Skyttella is a genus of lichenicolous fungi in the family Cordieritidaceae. It contains two species. The genus was circumscribed in 1988 by David Leslie Hawksworth and Rolf Santesson, with Skyttella mulleri assigned as the type species. This species, which parasitizes the lobes of foliose lichens in the genus Peltigera, was previously classified in the genus Phacopsis. Skyttella stictae, an Ecuadorian species that grows on Sticta, was added to the genus in 2017.
Skyttea is a genus of lichenicolous (lichen-dwelling) fungi in the family Cordieritidaceae. The genus was circumscribed in 1981 by lichenologists Martha Allen Sherwood, David L. Hawksworth, and Brian J. Coppins, with Skyttea nitschkei assigned as the type species.
Spirographa is a genus of parasitic fungi. It is the sole genus in the monotypic family Spirographaceae, belong to the order Ostropales. The genus was circumscribed by Alexander Zahlbruckner in 1903, with Spirographa spiralis later assigned as the type species in 1923. The family Spirographaceae was circumscribed by Adam Flakus, Javier Etayo and Jolanta Miadlikowska in 2019 on the basis of molecular phylogenetic analysis. They determined that genus Spirographa is an independent lineage in the Ostropales, sister to the clade containing the families Fissurinaceae, Gomphillaceae, and Graphidaceae.
Nanostictis is a genus of lichen-forming fungi in the family Stictidaceae. The genus was circumscribed in 1954 by Danish lichenologist Mogens Skytte Christiansen, with Nanostictis peltigerae assigned as the type species.
Xenonectriella is a genus of lichenicolous fungi in the family Nectriaceae. The genus was circumscribed by lichenologist Josef Karl Weese in 1919, with Xenonectriella lutescens assigned as the type species.
Dacampia is a genus of fungi in the family Dacampiaceae. It contains 15 species. The genus was circumscribed in 1853 by Italian lichenologist Abramo Bartolommeo Massalongo, with Dacampia hookeri assigned as the type species. The genus name honours Italian naturalist Benedetto de Dacampo (1787–1851).
Ovicuculispora is a genus of lichenicolous fungi in the family Bionectriaceae. The genus was circumscribed by Javier Etayo in 2010, with O. parmeliae assigned as the type species. This species had formerly been placed in the genera Nectria in 1981, and later (2001) in Nectriopsis.
Zhurbenkoa is a genus of lichenicolous fungi in the family Malmideaceae. It has three species. The genus was circumscribed in 2019 by Adam Flakus, Javier Etayo, Sergio Pérez-Ortega, and Pamela Rodriguez-Flakus, with Zhurbenkoa epicladonia assigned as the type species. Closely related genera are Savoronala and Sprucidea. The generic name honours Russian lichenologist Mikhail Zhurbenko, "for his magnificent contribution to knowledge on the biodiversity and systematics of lichenicolous fungi, including lichen parasites colonizing Cladonia".
Lichenotubeufia is a genus of lichenicolous fungi in the family Tubeufiaceae. The genus was circumscribed by Spanish mycologist and lichenologist Javier Etayo in 2017, with Lichenotubeufia eriodermatis assigned as the type species.
Rhagadostoma is a genus of fungi in the family Nitschkiaceae. All species in the genus are lichenicolous, meaning they live parasitically on lichens.
Lichenoverruculina is a fungal genus in the family Hyponectriaceae and order Amphisphaeriales. This is a monotypic genus, containing the single species Lichenoverruculina sigmatospora. which was published in Herzogia vol.24 (2) on page 274 in 2011.
