Figure 1
From: Alcobiosis, an algal-fungal association on the threshold of lichenisation

Association of Lyomyces sambuci and Desmococcus olivaceus (GPS: 48.9409975N, 14.5175219E; voucher: PRA-JV25262). (A) bark of Sambucus nigra covered by a free-living Desmococcus algal crust which is largely overgrown by Lyomyces; (B) vertical section of the Lyomyces crust with a distinct algal layer; (C) vertical section with the red chlorophyll autofluorescence; (D) algal colonies incorporated in a loose hyphal tissue, below the cover of compact fungal tissue; (E) Desmococcus in the algal layer; (F) Desmococcus and Lyomyces form lichen-like goniocysts. Scales: (B, C), 100 µm; (D, E, F), 20 µm.