Johannes Müller Argoviensis

Candelariella is a genus of bright yellow, ocher, or greenish yellow crustose or squamulose lichens in the family Candelariaceae. Members of the genus are commonly called eggyolk lichens, goldspeck lichens, or yolk lichens.

Phaeographis is a genus of crustose lichen-forming fungi in the family Graphidaceae. It has an estimated 180 species.

Hyperphyscia is a genus of lichen-forming fungi in the family Physciaceae. These lichens form tightly attached, leaf-like crusts that spread outward in rosettes, with individual lobes radiating in shallow, overlapping tiers that are seldom more than a millimetre or two wide and range in colour from pale brownish-grey to dark brown. They reproduce through brown, disc-shaped fruiting bodies that sit directly on the upper surface and contain thick-walled brown ascospores divided by a single cross-wall, typical of many members of their family.

Candelariella vitellina is a common and widespread green-yellow to orange-yellow crustose areolate lichen that grows on rock, wood, and bark, all over the world. It grows on non-calcareous rock, wood, and bark.

Phaeographina is a genus of lichen-forming fungi in the family Graphidaceae. The genus was circumscribed by Swiss lichenologist Johannes Müller Argoviensis in 1882.

Nephromopsis is a genus of lichenized fungi within the Parmeliaceae family.

Gymnographa is a genus of lichen-forming fungi in the family Graphidaceae. It contains two species.

Gyalectidium is a genus of lichen-forming fungi in the family Gomphillaceae. Established in 1881 by Swiss lichenologist Johannes Müller Argoviensis, the genus comprises about 50 species of predominantly leaf-dwelling lichens that form small, pale greenish to whitish-grey patches typically only a few millimetres across. Members are characterised by specialised asexual reproductive structures called hyphophores, which are small scale-like outgrowths that produce propagules containing both fungal and algal partners, and by fruiting bodies that contain single, large, multi-chambered ascospores.

Chaenotheca chlorella is a species of lichen belonging to the family Coniocybaceae. Synonym: Calicium chlorellum Ach., 1803 (= basionym)

Asterothyrium is a genus of leaf-dwelling lichens in the family Gomphillaceae. These tiny lichens form small, star-shaped fruiting bodies on the surface of leaves in tropical and subtropical forests. They are most commonly found in humid, shaded environments where leaves remain moist and clean. The genus includes 19 recognised species distributed primarily throughout Central and South America.

Trichothelium is a genus of lichen-forming fungi in the family Porinaceae. It has an estimated 40 species. The genus was circumscribed by the Swiss lichenologist Johannes Müller Argoviensis in 1885, with Trichothelium epiphyllum assigned as the type species.

Teloschistes capensis, commonly known as the Cape hair lichen, is a species of fruticose lichen in the family Teloschistaceae. It is endemic to the Atlantic coast in Namibia and South Africa.

Pyrenula microcarpa is a species of corticolous (bark-dwelling), crustose lichen in the family Pyrenulaceae. It has a pantropical distribution.

Psoroglaena is a genus of lichen-forming fungi in the family Verrucariaceae. The genus was circumscribed by Johann Müller Argoviensis in 1891, with Psoroglaena cubensis assigned as the type species.

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Pertusaria texana, the Texas wart lichen, is a species of corticolous (bark-dwelling), crustose lichen in the family Pertusariaceae. It is found in Mexico and the southwestern United States, where it grows on the bark of various trees.

Parmeliella is a genus of lichen-forming fungi in the family Pannariaceae. It occurs mainly in the tropics and subtropics, with species found in Africa, Asia, Australasia and South America. These lichens form small, leaf-like or crusty patches that are often anchored by blue-black fibres, and they partner with nitrogen-fixing cyanobacteria. The genus was established in 1862 by the Swiss lichenologist Johannes Müller Argoviensis, who distinguished it from related genera by the structure of its fruiting bodies.

Lobaria oregana, also known as lettuce lichen and as Oregon lungwort, is a species of foliose lichen occurring in North American old-growth forests, such as the Hoh Rainforest in Washington state. Taking its common name from its lettuce-like appearance, the lichen grows in the tree canopy but falls to the forest floor, where it is consumed by deer, elk, and other animals. The species was first described by American botanist Edward Tuckerman in 1874 as Sticta oregana, and later (1889) transferred to the genus Lobaria by Swiss lichen specialist Johannes Müller Argoviensis. Via cyanobacteria, it

Graphina is a genus of script lichens in the family Graphidaceae. It has about 25 species. The genus was circumscribed in 1880 by Swiss lichenologist Johannes Müller Argoviensis. Müller Argoviensis did not indicate a type species for the genus in his original publication; David Hawksworth proposed to designate Graphina anguina as a lectotype in 1981.

Coccotrema is a genus of lichen-forming fungi. It is the type genus of the family Coccotremataceae, in the order Pertusariales. The genus contains 16 species.

Chroodiscus is a genus of leaf-dwelling lichens in the family Graphidaceae. These lichens form thin, smooth crusts directly on living leaves and are characterized by distinctive star-shaped fruiting bodies that split into triangular segments, with centres ranging from grey to bright scarlet-red depending on their chemical composition. The genus is found throughout tropical regions worldwide, growing in the shaded understory of rainforests from lowland areas to mountain cloud forests, where they serve as sensitive indicators of undisturbed forest conditions.

Candelaria fibrosa is a species of lichen-forming fungus. In English, it goes by the common name lemon lichen. It also goes by the common name fringed candleflame lichen. It occurs on the bark of wood, and it resembles Xanthoria hasseana.

Calenia is a genus of lichen-forming fungi within the family Gomphillaceae.

Sarcographa labyrinthica is a species of corticolous (bark-dwelling) script lichen in the family Graphidaceae. The species grows on tree bark in tropical and subtropical forests, where it creates characteristic branching, crack-like fruiting bodies (lirellae) that resemble a labyrinth. It has been recorded from diverse locations including Florida, Costa Rica, Brazil, Madagascar, and Malaysia.

Pseudopyrenula is a genus of lichen-forming fungi in the family Trypetheliaceae.

Porina leptosperma is a species of foliicolous (leaf-dwelling) crustose lichen in the family Porinaceae. It was described as a new species in 1883 by Johannes Müller Argoviensis. Originally described from specimens collected in Brazil, it is also found in the Usambara Mountains of Tanzania, New Zealand and Tasmania.

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