John William McCarthy

Hymenelia parva is a species of saxicolous (rock-dwelling), crustose lichen in the family Hymeneliaceae. Found in Canada, it was formally described as a new species in 2018 by lichenologists Alan Fryday and John McCarthy. The type specimen was collected from Saint Mary's Bay in the Avalon Peninsula (Newfoundland and Labrador), where it was found growing on soft reddish-brown shale that was on the seashore. This area is part of the South Avalon–Burin oceanic barrens. The lichen is only known to occur in the type locality. The species epithet parva (Latin for "small" or "little") refers to its

Biatora terrae-novae is a species of corticolous (bark-dwelling) crustose lichen in the family Ramalinaceae. It is found in Newfoundland and Labrador, Canada. It was formally described as a new species in 2016 by lichenologists Christian Printzen and John McCarthy. The type specimen was collected along the Route de mon grand-père Trail in Port au Port Peninsula, where it was found growing on moss at base of a stem of balsam fir. The species contains argopsin, and norargopsin as major and minor lichen products, respectively.

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