Lecania chlorotiza
Description & Identification:
This is a crustose lichen with a scurfy-leprose thallus, bright to glaucous green in colour, becoming dirty grey. Apothecia are bright pink-orange to a piebald brown, 0.1-0.3 mm diam., occasional, semi-immersed, rarely becoming sessile.
Photo: P. Diederich
Habitats:
On very shaded, base-rich bark and inside old hollow trees, especially elm, ash and willow. Also very old oaks in sheltered wayside and woodland sites and by water.
Distribution:
Rare but widespread throughout Britain, also France, Denmark, Norway, Spain.
Records from Wales:
| Location | Grid Reference | Last Rec'd | Recorder | SSSI |
| Cards: Coed Cwm Cletwr | SN664919 | 1991 | S.P. Chambers | Yes |
| Cards: Coed Cwm Cletwr | SN676917 | 2010 | S.P. Chambers | Yes |
| Cards: Coed Nant Llolwen | SN589772 | 1993 | S.P. Chambers | Yes |
| Cards: Coed Cwm Einion | SN691947 | 1994 | S.P. Chambers | Yes |
| Cards: Coed Nant Paith, E of Nanteos | SN630785 | 1995 | S.P. Chambers | No |
| Cards: Trawsgoed | SN667729 | 1997 | S.P. Chambers | No |
| Cards: Coed Rhiwbren Fawr | SN473574 | 2010 | S.P. Chambers & A.Seddon | No |
| Cards: Coedmor NNR | SN194436 | 1985 | A. Orange | Yes |
| Mers: Coed Dolgoch Falls | SH652043 | 1992 | S.P. Chambers | No |
Notes on individual locations:
These notes from Steve Chambers:
Coed Cwm Cletwr: With Agonimia allobata on decaying bark of Tilia cordata, alt 60m and On shaded damp bark on NE side of Fraxinus excelsior in gorge E of minor road bend at E end.
Coed Nant Llolwen: On damp Fraxinus excelsior bark at base of tree in stream ravine woodland.
Coed Cwm Einion: On partially decayed spongy bark of old streamside.
Coed Nant Paith, E of Nanteos: On upperside of inclined mossy Quercus trunk
Trawsgoed: On shaded bark on ancient Fraxinus excelsior.
Coed Rhiwbren Fawr: On shaded rough base-rich bark on trunk of old Quercus in sheltered valley woodland.
Coedmor NNR: The earlier name ‘Catillaria chlorotiza’ is pencilled on an otherwise typed list of notable species recorded between 1973-85 assembled by Ray Woods (February 1985). There are no supporting details, i.e. precise locality, phorophyte, or whether voucher material exists. There is a supporting NCC note however (from Alan Orange to Glyn Jones) requesting the species ‘be added to the Coedmor list’, so the record is probably AO’s. [It is listed as such in the new BLS database, but it is not clear what the provenance of the record is - ADH]
Coed Dolgoch Falls: On decaying Fraxinus excelsior bark.