Fig. 15.

Nemania ethancrensonii, sexual morph. a. Top view of white pseudostromata on dead twig after periderm disintegration; b–c. white ectostromatic discs with black ostiolar necks, rupturing the bark; d–h. habit of white pseudostromata with black ostiolar necks in top (d–f) and side (g–h) view after periderm disintegration (in f–g with residual bark flaps); i–j. pseudostromata and perithecia in horizontal (i) and vertical (j) section; k. lateral peridium in vertical section in 3 % KOH; l. polyhedral crystals in pseudostromatic tissue in 3 % KOH; m–n. asci with paraphyses (m) in water; o–r. apical apparatuses in water (o), 3 % KOH (p), Lugol’s solution (q) and Lugol’s solution after 3 % KOH pretreatment (r); s–z. ascospores in water (s–v), 3 % KOH (w) and Melzer’s reagent (x–z) (holotype WU-MYC 0040047). — Scale bars: a = 5 mm; b–c = 200 μm; d–j = 500 μm; k–l, n = 10 μm; m = 50 μm; o–z = 5 μm.