Lichen: Leptogium teretiusculum
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Leptogium teretiusculum
Leptogium teretiusculum showing a typcal view of the thallus.
Vice County Web Map: Leptogium-teretiusculum
Name: Leptogium teretiusculum (Wallr. )Arnold (1892)
Pronunciation:Leptogium teretiusculum
Conservation Evaluation: Least Concern
Body Type: Foliose – Crustose
Description: Brown to grey thallus; smooth when wet; it forms small patches generally less than 15mm diameter. When dry it has a very shrivelled appearance. The thallus consists of many coral-like ascending structures forming dense mats. Apothecia are very rare; discs are concave to flat. Isidia are common.
Chemical Tests: All negative.
Nature Notes: Found associated with old woodlands, particularly on trees with cracked rough basic bark. Also found on calcareous rocks and mortar-rich walls.
Similar species:
Leptogium schraderi: a similar species also with few apothecia.
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.