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Lichen: Lecanora zosterae

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Lecanora zosterae growing on dead Sea Thrift

Lecanora zosterae growing on dead Sea Thrift

Lecanora zosterae showing a cluster of apothecia.

Lecanora zosterae showing a cluster of apothecia.

Name: Lecanora zosterae (Ach.) Nyl. (1860)

Pronunciation: Lecanora zosterae

Conservation Evaluation: Least Concern, Nationally Scarce.

Body Type: Crustose

General view of how Lecanora zosterae appears on dead wood.

General view of how Lecanora zosterae appears on dead wood.

Description: The thallus is invisible being immersed in the substrate. The substrate is typically dead drift wood or dead sea thrift. Apothecia are typically found grouped and range in size from 0.4 to 3.5 mm in diameter. They are thin and flattened with light grey discs and thin thalline margins. The discs may become concave as they age and change colour to reddish brown to almost black. Ascospores are ellipsoid and colourless with a size range of 9-13 X 4 – 6 µm.

Chemical Reactions: All chemical reactions are negative as there are no lichen substances present.

Distribution of Lecanora zosterae in Ireland

Distribution of Lecanora zosterae in Ireland

Nature Notes: This is a coastal lichen in Ireland being found on mainly dead Sea Thrift stems (Armeria maritima) on very exposed shores. It is also found on drift wood, soil and sometimes as an epiphyte.

Vice County distribution map of Lecanora zosterae: See Map

Link: Map this species on the Lichen Survey

Other species recorded in Ireland

  • Lecanora achariana A.L.Sm.
  • Lecanora actophila Wedd.
  • Lecanora agardhiana Ach.
  • Lecanora aitema (Ach.) Hepp
  • Lecanora albella (Pers.) Ach.
  • Lecanora albescens (Hoffm.) Branth & Rostr.
  • Lecanora alboflavida Taylor
  • Lecanora andrewii de Lesd.
  • Lecanora argentata (Ach.) Malme
  • Lecanora campestris (Schaer.) Hue
  • Lecanora campestris ssp. campestris
  • Lecanora carpinea (L.) Vain.
  • Lecanora cenisia Ach.
  • Lecanora chlarotera Nyl.
  • Lecanora conferta (Duby ex Fr.) Grognot
  • Lecanora confusa Almb.
  • Lecanora congesta Clauzade & Vezda
  • Lecanora conizaeoides Nyl. ex Cromb.
  • Lecanora crenulata Hook.
  • Lecanora dispersa (Pers.) Sommerf.
  • Lecanora epanora (Ach.) Ach.
  • Lecanora epibryon (Ach.) Ach.
  • Lecanora expallens Ach.
  • Lecanora farinaria Borrer
  • Lecanora fugiens Nyl.
  • Lecanora gangaleoides Nyl.
  • Lecanora helicopis (Wahlenb.) Ach.
  • Lecanora horiza (Ach.) Linds.
  • Lecanora intricata (Ach.) Ach.
  • Lecanora intumescens (Rebent.) Rabenh.
  • Lecanora jamesii J.R.Laundon
  • Lecanora muralis (Schreb.) Rabenh.
  • Lecanora orosthea (Ach.) Ach.
  • Lecanora persimilis (Th.Fr.) Nyl.
  • Lecanora piniperda Körb.
  • Lecanora poliophaea (Wahlenb.) Ach.
  • Lecanora polytropa (Hoffm.) Rabenh.
  • Lecanora praepostera Nyl.
  • Lecanora pulicaris (Pers.) Ach.
  • Lecanora rugosella Zahlbr.
  • Lecanora rupicola (L.) Zahlbr.
  • Lecanora saligna (Schrad.) Zahlbr.
  • Lecanora sambuci (Pers.) Nyl.
  • Lecanora soralifera (Suza) Räsänen
  • Lecanora stenotropa Nyl.
  • Lecanora subcarnea (Lilj.) Ach.
  • Lecanora sulphurea (Hoffm.) Ach.
  • Lecanora symmicta (Ach.) Ach.
  • Lecanora varia (Hoffm.) Ach.

Text and images © Paul Whelan, 2009.