Lichens : Umbilicariales : FuscideaceaeLichens

Fuscidea recensa (Stirt.) Hertel, V.Wirth & Vězda

Description: Of the acid rock-loving Fuscideas this, along with F. cyathoides var. cyathoides, is perhaps the most common. Usually without discs, it is easily identified by the abundant greyish soralia which crowd the centre of the thallus. All spot tests are negative. It grows on hard, siliceous rocks and on acid conglomerates. The sides of large boulders are a frequent site for it. It is widely scattered so is probably much under-recorded in Ireland.

Key Identification Features:

  • Small grey thallus crowded with brownish soralia and surrounded by a dark line of prothallus. Spot tests negative
  • Hard acid rocks in upland areas.

Original text submitted by Vince J. Giavarini

Distribution Map from NBN: Fuscidea recensa at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Fuscidea recensa at iNaturalist World Species Observations database.

 Giavarini, Vince J., Simms, Michael J., & Davey, Simon, 2026. Fuscidea recensa. (Stirt.) Hertel, V.Wirth & Vězda. [In] Lichen Ireland.
https://www.habitas.org.uk/lichenireland/species.php?item=18498. Accessed on 2026-11-12.