Lophiotrema vagabundum  

Anamorph: not known.
Teleomorph: Ascostromata scattered to densely aggregated, (200–) 250–350 µm diam, hardly erumpent, ± globose, often elongated parallel to the long axis of the substratum, the apical part shortly papillate with a matt black flattened crest to 100 µm tall and to 200 µm in length. Ascostromatal wall 15–20 µm thick over its whole surface, strongly melanized, composed of 3–6 layers of flattened angular cells and an inner hyaline layer. Interascal tissue composed of copious thin-walled anastomosing pseudoparaphyses 1.5–2.5 µm diam, lacking a gelatinous matrix. Asci 110–120 × 7–9 µm, ± cylindrical, with a short strongly tapered stalk, fissitunicate, with a small ocular chamber, 8-spored. Ascospores arranged biseriately, (20.5–)22–27(–30) [mean 24.1, sd 1.29, n=60] × 4–5.5 (–6.0) µm [mean 4.9, sd 0.42, n=60], mean length/breadth ratio 5.0:1, fusiform, 1-septate at maturity, sometimes slightly curved, slightly constricted at the septum, the cell section immediately above the primary septum usually inflated, hyaline, smooth, strongly guttulate when young, sometimes becoming pale brown and/or roughened when over-mature, with a broad gelatinous sheath.