Order: Peltigerales       Family: Collemataceae Species: Leptogium pulvinatum Growth type crustose. Photos: Among moss. Ballingeary and Glengarriff, Cork, SW Ireland. Specimen left confirmed by John Douglass Previously regarded as a morph of Leptogium gelatinosum. Dark brown or reddish-brown thallus. Small, much divided lobes with fimbriate margins. The marginal extensions are flattened and never cylindrical. Apothecia red-brown or brown. Isidia are absent. Ascus clavate, apical dome with darker axial tube. Usually 8-spored. Muriform spores 22-42 x 11-17 µm. Micro photographs below. Occurs among moss on basic to calcareous substrata. It is a recently recognised species and distribution is uncertain. Chemical reactions negative. Similar: Leptogium lichenoides. Cylindrical marginal isidia.

Microscope photographs







Leptogium pulvinatum. August and November 2009