Patrick Martin McCarthy

Verrucaria simplex is a species of saxicolous (rock-dwelling), crustose lichen in the family Verrucariaceae. Found in Europe and Asia, it was described as new to science in 1988 by lichenologist Patrick McCarthy. The type specimen was collected by Brian Coppins from Morpeth, Northumberland; there, it was found growing on a fragment of mortar-cement lying on the floor of a woodland. The lichen was later reported from the Czech Republic, and Korea.

Porina ocellatoides is a species of saxicolous, (rock-dwelling) crustose lichen in the family Porinaceae. Found on Lord Howe Island, Australia, it was formally described as a new species in 1997 by lichenologist Patrick M. McCarthy. The type specimen was collected by the author on the track from Smoking Tree Ridge to Boat Harbour, where it was found growing on deeply shaded basalt. Its species epithet ocellatoides alludes to its resemblance to Porina ocellata.

Porina mariae is a species of saxicolous (rock-dwelling) crustose lichen in the family Porinaceae. Found on Lord Howe Island, Australia, it was formally described as a new species in 1997 by lichenologist Patrick M. McCarthy. The type specimen was collected by the author on the track from Smoking Tree Ridge to Boat Harbour, where it was growing on deeply shaded basalt. The species epithet honours the author's wife, Marie Meaney-McCarthy, "in recognition of her unwavering encouragement and support".

Porina howeana is a species of saxicolous (rock-dwelling) crustose lichen in the family Porinaceae. Found on Lord Howe Island, Australia, it was formally described as a new species in 1997 by lichenologist Patrick M. McCarthy. The type specimen was collected by the author from east of Dawsons Point Ridge on Max Nicholls Track, where it was growing on shaded basalt.

Myeloconis erumpens is a species of corticolous (bark-dwelling), crustose lichen in the family Porinaceae. It is found in Papua New Guinea, north-eastern Australia and New Caledonia. The lichen was formally described as a new species in 1996 by Patrick M. McCarthy and John Elix. The species epithet erumpens refers to the distinctive thallus of the lichen, which has exposed patches and "eruptions" of yellow medulla that are visible against the brownish thallus.

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Trichothelium longisetum is a little-known species of wood-dwelling, crustose lichen in the family Porinaceae. Found in northeastern Ecuador, it was formally described as a new species by lichenologists Patrick M. McCarthy and Zdeněk Palice in 2003. The species epithet longisetum refers to the long, narrow setae that characterize this species.

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