Description: This variety differs from var. undulatum (described elsewhere) in its globose or granular isidia. Records have originated from the Burren, County Clare and the Arran Islands.

Key Identification Features:

• Like C. cristatum (described elsewhere) but with three-septate spores, concave lobes and exciple never above the level of the disc
• On the hard limestones of exposed ridges.

Original text submitted by Vince J. Giavarini

Distribution Map from NBN: Lathagrium undulatum var. granulosum at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Lathagrium undulatum var. granulosum at iNaturalist World Species Observations database.