Lichen: Leptogium schraderi
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The thallus forms small radiating patches.
Close up of the finger like projections.
Vice County Web Map Leptogium-schraderi
Name: Leptogium schraderi (Ach.) Nyl. (1856)
Pronunciation:Leptogium schaderi
Conservation Evaluation: Least Concern
Body Type: Foliose – Crustose
Description: Dark red-black to green-brown and glossy when wet; it forms small patches generally less than 18mm in diameter and 5mm thick. When dry it has a very shrivelled appearance. The thallus consists of many finger-like ascending structures about 1 mm wide and 25mm long; often branched at the base. Apothecia are rare and when present are less than 1.5mm in diameter; discs are concave to flat. Granular isidia are common.
Chemical Tests: All negative.
Nature Notes: Found associated with calcareous grassland and on mortar-rich walls and in limestone areas and graveyards.
Similar species:
Leptogium turgidum: A similar species but with an abundance of apothecia and has globose rather than granular isidia.
Leptogium teretiusculum: An almost microscopic version of L. schraderi. Found in counties Kerry, Antrim and Donegal.
Vice county distribution map: See map
Link: Map this species on the Lichen Survey
Other species recorded in Ireland:
- Leptogium biatorinum (Nyl.) Leight.
- Leptogium brebissonii Mont.
- Leptogium britannicum P.M.Jørg.& P.James
- Leptogium burgessii (L.) Mont.
- Leptogium cochleatum (Dicks.) P.M.Jørg.& P.James
- Leptogium cyanescens (Rabenh.) Körb.
- Leptogium diffractum Kremp.ex Körb.
- Leptogium gelatinosum (With.) J.R.Laundon
- Leptogium hibernicum Mitchell ex P.M.Jørg.
- Leptogium juressianum Tav.
- Leptogium lichenoides (L.) Zahlbr.
- Leptogium massiliense Nyl.
- Leptogium palmatum (Huds.) Mont.
- Leptogium plicatile (Ach.) Leight.
- Leptogium schraderi (Ach.) Nyl.
- Leptogium subtile (Schrad.) Torss.
- Leptogium tenuissimum (Dicks.) Körb.
- Leptogium teretiusculum (Wallr. )Arnold
- Leptogium turgidum (Ach.) Cromb.
Text and images © Paul Whelan, 2009.