Rhizocarpon reductum

Rhizocarpon reductum

Observation - Rhizocarpon reductum - UK and Ireland. Description: On siliceous quarry spoil. Thallus weakly K+ yellow. Ascospores colourless, muriform, 20-35 x 12-18µm.

On siliceous quarry spoil. Thallus weakly K+ yellow.
Ascospores colourless, muriform, 20-35 x 12-18µm.