• Rinodina orculariopsis H.Mayrhofer
Rinodina orculariopsis
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This is a lichen of coastal, siliceous rock cliff crevices where it is tolerant of some nutrient enrichment. At inland sites, the undersides of sheltered rock overhangs are favoured. The thallus is greyish-brown to black, sometimes with a tinge of mauve. The closely aggregated discs slightly raised in shaded situations have a thick rim (exciple). All reactions are negative. Spores are on the large side (to 23m long). In Ireland, the species is known from a few localities, for example, the Glenderlough mica-schist, County Wicklow.

Key characteristics

  • Thallus without soredia or isidia; grey-brown to black with a mauve tinge; discs crowded
  • Coastal siliceous rock crevices and inland schistose cliffs; spores1723m long.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Rinodina orculariopsis H.Mayrhofer. [In] LichenIreland. Accessed on 2018-08-20.