LICHALP

Lecidea grisella Flörke

Syn.: Biatora livescens (Leight.) Walt. Watson, Lecidea fumosa (Hoffm.) Ach. var. grisella (Flörke) Müll. Arg., Lecidea fuscoatra (L.) Ach. var. grisella (Flörke) Nyl., Lecidea grisella Flörke f. mosigii (Ach.) Zahlbr., Lecidea livescens Leight., Lecidea segregula Nyl.

Lichenised. Poorly known taxon.

Substrate: siliceous rocks

Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)

Note: this taxon was subsumed for a long time into L. fuscoatra, but appears to be a well-distinct species, mainly distinguished by the rimose instead of areolate thallus. It grows on base-rich siliceous rocks, often on man-made substrata, e.g. on roofing tiles, and seems to be most frequent at lower elevations than L. fuscoatra. Some authors, however (e.g. Roux et coll. 2014) still prefer to treat this taxon as a variety of the extremely polymorphic L. fuscoatra.