Dirina Cretacea
''Dirina cretacea'' is a species of saxicolous lichen, saxicolous (rock-dwelling), crustose lichen in the family Roccellaceae. Its distribution is largely in the eastern Mediterranean Basin, Mediterranean, and in Andalusia, Spain. It was species description, formally described as a new species in 1899 by Alexander Zahlbruckner as a member of the genus ''Chiodecton''. The type (biology), type specimen was collected in Croatia. Anders Tehler transferred it to the genus ''Dirina'' in 1983. The lichen has a whitish-grey thallus (0.3–1.0 mm thick) lacking soralia, and a chalk-like medulla (lichenology), medulla. Its ascomata have a circular outline and a diameter of up to 3.8 mm; the apothecial is also white grey with a layer of , and is surrounded by a . Ascospores measure 19–23 by 5–6 micrometre, μm. References

Dirina, cretacea Lichen species Lichens described in 1899 Lichens of Southeastern Europe Lichens of Southwestern Europe Lichens of North Africa ...
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