Fig. 3.

Linosporopsis ischnotheca. a Colonies (bleached patches) on dead overwintered leaves of Fagus sylvatica with scattered black, clypeus-like uniperitheciate pseudostromata. b–d Close up of colonies with black clypeus-like uniperitheciate pseudostromata. e–g Uniperitheciate pseudostromata from above (e), in side view (f), and in transverse section (g). h Host epidermis cells with dark brown, septate, branched hyphae forming a textura intricata. i Uniperitheciate pseudostroma in transverse section. j Pseudoparenchymatous, hyaline peridium and adjacent host tissue in section. k–o Asci (o immature). p–r Ascus apices. s Paraphysis. All in 3% KOH, except i, j, p, s in water; r in Lugol after KOH pre-treatment (a, e–g, m, n WU 40027; b PC0706583, isotype; c PC0706584, isotype; d PAD, holotype of Linospora magnagutiana subsp. faginea; h K(M) 206638, isotype; i, j, p, s WU 40026; o, q, r K(M) 206636, lectotype). Scale barsa, d 10 mm; b 1 mm; c, e 200 μm; f, g, i 100 μm; h, j–o, s 10 μm, p–r 5 μm