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Description
Description
A thin, sometimes barely visible, greyish-white crustose lichen. Its black fruiting bodies form short, narrow lines called lirellae. These are mostly unbranched, with raised margins surrounding a slit-like disc that may widen as it develops.
Source: ITALIC — Alyxoria culmigena
Chemistry
Chemistry
Thallus: K−, C−, KC−, P−, UV−. No characteristic lichen substances are reported.
Source: ITALIC — Alyxoria culmigena
Habitat and Substrate
Habitat and Substrate
Grows on bark and dead plant material, occasionally on wood. It is associated with lowland areas experiencing relatively mild winters.
Source: ITALIC — Alyxoria culmigena
Similar Species
Similar Species
Other script lichens may be similar in appearance. Identification should include microscopic examination of the fruiting bodies and spores. Older literature may use the name Opegrapha herbarum.
Sources: ITALIC; BLS identification revision
How to Identify
How to Identify
Use the Lecanographaceae key; check spore septation and width, and compare the exciple and iodine reactions with Alyxoria ochrocheila.
Source: BLS identification revision
Important Links
Important Links
ITALIC — description, chemistry and images
British Lichen Society — species account and British distribution
GBIF — taxonomy and global occurrence records
AFL — species account and photographs
Lichens maritimes — species account
Identification Bibliography
Identification Bibliography
For identification, use the relevant key and compare the microscopic characters and chemical reactions. Photographs alone may be insufficient for closely similar crustose species.
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