LICHALP

Blennothallia crispa (Huds.) Otálora, P.M. Jørg. & Wedin var. metzleri (Arnold) ined. (provisionally placed here, ICN Art. 36.1b)

Syn.: Collema cheileum (Ach.) Ach. var. metzleri Arnold, Collema crispum (Huds.) Weber ex F.H. Wigg. var. metzleri (Arnold) Degel., Collema metzleri (Arnold) J. Steiner, Collema monocarpum Dufour ex Schaer., Collema platycarpum Durieu & Mont.

Lichenised.

Substrate: calciferous rocks, calciferous soil

Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)

Note: a taxon characterised by constantly small thalli and one to few apothecia per thallus; on calcareous rocks, often in somewhat shaded and moist situations; probably widespread, but poorly documented because often not distinguished from the typical variety.