# Dirina pacifica

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***Dirina pacifica*** is a species of [saxicolous](/source/Saxicolous_lichen) (rock-dwelling), [crustose lichen](/source/Crustose_lichen) in the family [Roccellaceae](/source/Roccellaceae).[1] It is found in both [Hawaii](/source/Hawaii) and the [Galápagos Islands](/source/Gal%C3%A1pagos_Islands), where it grows in coastal [outcrops](/source/Outcrop). The lichen was [formally described](/source/Species_description) as a new species in 2013 by Anders Tehler and Damien Ertz. The [type specimen](/source/Type_(biology)) was collected from [Koolaupoko](/source/North_Koolaupoko,_Hawaii) ([Oahu](/source/Oahu), Hawaii). The [species epithet](/source/Botanical_name) refers to the Pacific Ocean. It has a creamy white to greyish or brownish [thallus](/source/Thallus) (0.1–0.3 mm thick) lacking , and a chalk-like [medulla](/source/Medulla_(lichenology)). Its [ascomata](/source/Ascomata) have a circular outline up to 1.5 mm in diameter, with a whitish-grey . Its [ascospores](/source/Ascospore) measure 19–27 by 4–5 [μm](/source/Micrometre). *Dirina pacifica* contains the [lichen products](/source/Lichen_product) [erythrin](/source/Erythrin), [lecanoric acid](/source/Lecanoric_acid), and sometimes three unidentified substances named "C", "F", and "G".[2]

## References

1. Tehler, Anders; Ertz, Damien; Irestedt, Martin (2013). ["The genus *Dirina* (Roccellaceae, Arthoniales) revisited"](https://www.researchgate.net/publication/259433780). *The Lichenologist*. **45** (4): 427–476. [doi:10.1017/s0024282913000121](https://doi.org/10.1017/s0024282913000121). [S2CID 85670716](https://api.semanticscholar.org/CorpusID:85670716)

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