LichenIreland
  • Caloplaca oasis (A. Massal.) Szatala

There are no records for this species at present.

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Most past records of C. polycarpa in Ireland belong here owing to the mistakenly held belief that C. polycarpa was a parasite of Verrucaria spp., especially V. baldensis. C. oasis is the correct name for the Verrucaria parasite but it can also grow independently on calcareous man-made substrates such as concrete and mortar. Well-developed forms are also those which are parasitic. In Ireland, the species is widely distributed; it is not uncommon.

Key characteristics

  • Often parasitic on V. baldensis on limestone buildings and churchyard monuments
  • A member of the C. holocarpa group; discs small 0.20.4mm diam.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Caloplaca oasis (A. Massal.) Szatala. [In] LichenIreland.
http://www.habitas.org.uk/lichenireland/species.asp?item=500022 Accessed on 2017-12-18.