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Lichen: Lecanora pulicaris

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Lecanora pulicaris is often found growing at the nodes of branches.

Lecanora pulicaris is often found growing at the nodes of branches.

Name: Lecanora pulicaris (Pers.) Ach.

Pronunciation: Lecanora pulicaris

Conservation Evaluation: Least Concern Body Type: Crustosemap-lecanora-pulcharis

Description: The apothecial discs are reddish-brown to black and tend to be flat; they range in size from 0.3 mm to 1.5 mm. The apothecial rim is complete or at times a little lumpy. The thallus will take up a circular growth pattern if unimpeded, reaching a typical diameter of 4 cm. The central area of the thallus is lumpy or areolate with a crazy-paving appearance. The prothallus ranges in colour from white to dark blue. Ascospores are ellipsoidal with a size of about 12 µm by 8 µm.

Chemical Tests: The thallus reacts: K +(yellow), KC -, C +, UV +(blue).

Nature Notes: Found on both the bark and wood of deciduous and coniferous trees, especially in the nodes between branches. Also found on twigs and fences.

Vice County distribution map of Lecanora pulicaris: 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 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 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.