Martin Grube

Zwackhiomyces is a genus of lichenicolous (lichen-dwelling) fungi in the family Xanthopyreniaceae.

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Coniarthonia is a genus of lichen-forming fungi in the family Arthoniaceae. The genus comprises about fourteen species of crustose lichens that grow on tree bark, mainly in tropical and subtropical regions. They are distinguished by their powdery, crimson to scarlet fruiting bodies, which contain abundant crystallized red pigments, a feature that sets them apart from other lichens in the order Arthoniales. The genus was established in 2001 by the Austrian lichenologist Martin Grube, who separated these species from the large, variable genus Arthonia.

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Arthonia isidiata is a species of corticolous (bark-dwelling) crustose lichen in the family Arthoniaceae. Found in Central America, it is characterized by its thin, shiny thallus, and isidia (reproductive propagules) that emerge from the surface. Discovered in Costa Rica's Corcovado National Park, and later recorded from Panama, this species thrives in lowland tropical coastal rainforests on smooth bark of smaller, often young trees.

Coniarthonia pyrrhula is a species of crustose lichen-forming fungus in the family Arthoniaceae. It is a bark-dwelling lichen with a thin, whitish crust and flat, crimson-red fruiting bodies with a floury surface, found across the Americas and in Macaronesia. It is the type species of the genus Coniarthonia, described originally in 1885 and transferred to that genus in 2001.

Collemopsidium sublitorale is a species of lichen in the family Xanthopyreniaceae. First described in 1871, it forms a "borderline" symbiotic relationship with cyanobacteria that is less structured than typical lichen partnerships. The species is characterised by an immersed thallus and black, roughly spherical fruiting bodies measuring 0.15–0.55 mm in diameter. It inhabits the intertidal and littoral fringe of marine environments, where it grows exclusively on calcareous surfaces such as limestone and marine shells. Its range includes north-west Europe and the Pacific coast of North America

Pyrenocollema elegans is a lichen-forming fungus species that grows in marine environments along rocky coastlines. First recognized in 1937 and formally described by the Swedish lichenologist Rolf Santesson in 1992, it is distinguished by its dark brown thallus that forms rosettes up to 10 mm in diameter bearing characteristic black ridges and warts. The species inhabits the intertidal zone, particularly on siliceous rocks, where it commonly associates with barnacles and other marine lichens. It has a wide geographic distribution, occurring along the Atlantic coast of Europe from Norway to

Bartheletia paradoxa is a species of dimorphic fungus and is the only member of the genus Bartheletia. Bartheletia is the only genus in the family Bartheletiaceae, which is the only family in Bartheletiales, which in turn is the only order in the class Bartheletiomycetes. Sorus-like sporodochia form on freshly fallen leaves and petioles of Ginkgo biloba in early autumn in Asia and Europe and persist through the winter. They produce slimy, hyaline, single-celled, cylindrical conidia. Thick-walled, dark brown teliospores develop in leaf tissue, clustered in structures about 1 mm diameter,

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Sporostigma is a genus of lichenized fungi in the order Arthoniales. Its familial placement is uncertain. This is a monotypic genus, containing the single species Sporostigma melaspora.

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Frigidopyrenia is a fungal genus in the family Xanthopyreniaceae. It is a monospecific genus, containing the single species Frigidopyrenia bryospila, a subarctic crustose lichen. The species was originally described in 1864 from Arctic Norway but has been moved between various genera over the past 160 years before being placed in its own genus in 2005. Despite its early discovery, Frigidopyrenia remains poorly known and is considered rare in collections, though it may be more widespread than records suggest. The lichen forms tiny dark scales less than half a millimetre across on damp soil,

Coniarthonia wilmsiana is a species of crustose lichen-forming fungus in the family Arthoniaceae. It is a bark-dwelling lichen with a thin, whitish crust and bright crimson, spot-like fruiting bodies, found across the tropics and into the southern hemisphere. The species was originally described from South Africa in 1886 and transferred to Coniarthonia in 2001.

Coniarthonia pulcherrima is a species of lichen-forming fungus in the family Arthoniaceae. It is a bark-dwelling lichen with a thin, whitish crust and distinctive scarlet-red, rounded fruiting bodies, found in tropical regions from Hawaii to South America and the Caribbean. The species was originally described in 1886 and transferred to Coniarthonia in 2001.

Coniarthonia haematodea is a species of lichen-forming fungus in the family Arthoniaceae. It is a bark-dwelling lichen with a thin, whitish crust and blood-red, spot-like fruiting bodies, known only from Bahia, Brazil. The species was formally described in 2001 and is named for the color of its fruiting bodies.

Coniarthonia gregarina is a species of crustose lichen-forming fungus in the family Arthoniaceae. It is a bark-dwelling lichen with a thin, whitish crust and crimson-red, spot-like fruiting bodies containing large, multi-chambered ascospores. Originally described from Florida in 1887, it has also been recorded from Brazil.

Coniarthonia erythrocarpa is a species of lichen-forming fungus in the family Arthoniaceae. It is a bark-dwelling lichen with a thin, whitish crust and distinctive crimson-red fruiting bodies, known only from Palma, Mozambique. The species was originally described by Edvard Vainio in 1930 and transferred to Coniarthonia in 2001.

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Sagema is a fungal genus in the family Lecanoraceae. It is a monotypic genus, containing the single species Sagema potentillae, a crustose lichen found in Nepal. The lichen forms a thin, whitish crust with small dark reddish-brown fruiting discs surrounded by pale rims. It is set apart from related lichens by its unusually thick-walled ascospores, each measuring about 30–40 micrometres long.

Parasiphula is a genus of crustose lichens in the family Coccotremataceae. The genus was circumscribed by Gintaras Kantvilas and Martin Grube in 2006, and contains seven species that are known from cool to cold latitudes in the Southern Hemisphere.