Dirina canariensis

Species of lichen

Dirina canariensis is a species of saxicolous (rock-dwelling), crustose lichen in the family Roccellaceae. It is found in the Canary Islands, where it grows on vertical cliffs and acidic rocks. It was formally described as a new species in 2013 by lichenologists Anders Tehler and Damien Ertz. The type specimen was collected by the first author from the Puerto de Mogán ; the species epithet refers to the type locality. The lichen has a creamy-white to brownish-white thallus, a chalk-like medulla, and either soralia or apothecia on the thallus surface. If apothecia are present, they have a circular outline with a diameter of up to 1.5 mm; the discs are pruinose and encircled by a thalline margin. Ascospores measure 20–25 by 4–5 μm. The closest relatives of Dirina canariensis are the European species D. ceratoniae, D. massiliensis, and D. fallax.

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