Order: Peltigerales       Family: Collemataceae Species: Scytinium pulvinatum (Leptogium pulvinatum) Growth type crustose. Photos: Among moss. Ballingeary and Glengarriff, Cork, SW Ireland. 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, asci usually 8-spored. Muriform spores 22-42 x 11-17 µm. Isidia are absent. Micrographs below. Occurs among moss on basic to calcareous substrata. Recently recognised, distribution is uncertain. Chemical reactions negative. Similar: Leptogium lichenoides. Cylindrical marginal isidia.

Microscope photographs





Leptogium pulvinatum. August and November 2009