• Verrucaria elaeomelaena (A.Massal.) Arnold
Verrucaria elaeomelaena
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This species is rare in Ireland and entirely restricted to waterbodies on limestone. The pale grey-green or occasionally brown, smooth subgelatinous thallus forms slightly elevated, submerged colonies. Discs (perithecia) are variably projecting and mostly covered by a layer of thallus. Spores are broadly ellipsoid (1213m wide); average length (2024m). It grows submerged for long periods in the Burren turloughs.

Key characteristics

  • Thallus subgelatinous, pale grey-green, colonies appear raised above the natural height of the stone as it affords the substratum some protection from solution
  • In the submerged zone of lakes.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Verrucaria elaeomelaena (A.Massal.) Arnold. [In] LichenIreland. Accessed on 2018-08-17.