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Lichen: Caloplaca ferruginea

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Caloplaca ferruginea

Caloplaca ferruginea on wood. Photo Paul Whelan, 2009

Name: Caloplaca ferruginea (Huds.) Th. Fr. (1860)

Pronunciation: Caloplaca ferruginea


Conservation Evaluation: Least Concern, Nationally Scarce, International Responsibility.

Body Type: Crustose

Description: The apothecia are characteristically a deep red colour with a flexuose or uneven rim. The thallus is white to grey in colour and may be immersed in the substrate. Usually found on the bark (neutral to basic) of mature trees or on twigs, including hawthorn and oak. When the apothecia are cut in section there is rarely any photobiont present (in the hymenium).

Chemical Tests: K+.

Nature Notes: This species is becoming rare in Ireland due to the lack of suitable substrate (Hazel, Aspen, Ash, Rowan). Superficially it looks similar to Caloplaca crenularia, however C. crenularia is only found on rock.

Vice County distribution map of Caloplaca ferruginea: See Map

Link: Map this species on the Lichen Survey

Other species recorded in Ireland

  • Caloplaca alociza (A.Massal.) Mig.
  • Caloplaca arenaria (Pers.) Müll.Arg.
  • Caloplaca atroflava (Turner) Mong.
  • Caloplaca aurantia (Pers.) Hellb.
  • Caloplaca britannica R.Sant.
  • Caloplaca ceracea J.R.Laundon
  • Caloplaca cerina (Ehrh. ex Hedw.) Th.Fr.
  • Caloplaca cerinella (Nyl.) Flagey
  • Caloplaca chalybaea (Fr.) Müll.Arg.
  • Caloplaca chlorina (Flot.) H.Olivier
  • Caloplaca cirrochroa (Ach.) Th.Fr.
  • Caloplaca citrina (Hoffm.) Th.Fr.
  • Caloplaca citrina s.l. (Hoffm.) Th.Fr.
  • Caloplaca concilians (Nyl.) H.Olivier
  • Caloplaca crenularia (With.) J.R.Laundon
  • Caloplaca crenulatella (Nyl.) H.Olivier
  • Caloplaca dalmatica (A.Massal.) H.Olivier
  • Caloplaca decipiens (Arnold) Blomb. & Forssell
  • Caloplaca flavescens (Huds.) J.R.Laundon
  • Caloplaca flavocitrina (Nyl.) H.Olivier
  • Caloplaca flavorubescens (Huds.) J.R.Laundon
  • Caloplaca flavovirescens (Wulfen) Dalla Torre & Sarnth.
  • Caloplaca holocarpa (Hoffm.) A.E.Wade
  • Caloplaca lactea (A.Massal.) Zahlbr.
  • Caloplaca littorea Tav.
  • Caloplaca luteoalba (Turner) Th.Fr.
  • Caloplaca marina (Wedd.) Zahlbr. ex Du Rietz
  • Caloplaca maritima de Lesd.
  • Caloplaca microthallina (Wedd.) Zahlbr.
  • Caloplaca obliterans (Nyl.) Blomb. & Forssell
  • Caloplaca obscurella (Lahm ex Körb.) Th.Fr.
  • Caloplaca ochracea (Schaer.) Flagey
  • Caloplaca polycarpa (A.Massal.) Zahlbr.
  • Caloplaca saxicola (Hoffm.) Nordin
  • Caloplaca teicholyta (Ach.) J.Steiner
  • Caloplaca thallincola (Wedd.) Du Rietz
  • Caloplaca ulcerosa Coppins & P James
  • Caloplaca variabilis (Pers.) Müll.Arg.
  • Caloplaca verruculifera (Vain.) Zahlbr.

Text & Images © Paul Whelan, 2009