LICHALP

Hydropunctaria rheitrophila (Zschacke) C. Keller, Gueidan & Thüs

Syn.: Verrucaria cinereolutescens Zschacke, Verrucaria kernstockii Zschacke, Verrucaria minutipuncta Erichsen, Verrucaria rheitrophila Zschacke, Verrucaria scotinodes Zschacke

Lichenised.

Substrate: ,

Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers)

Note: a species with an olive-green to orange-brown thallus, in longitudinal section usually with carbonised dots or/and columns, and perithecia with a basally open involucrellum; on both siliceous and calcareous rocks in cold, fast-running streams or in permanently submerged to frequently wetted places; widespread in the Holarctic region and also known from the Southern Hemisphere; also widespread in the Alps, but not common.