Stroma size unchanged after rehydration, colour more yellow; dots brown; after addition of 3% KOH stromata macroscopically black; in the stereo-microscope stroma surface yellow between distinctly www.selleckchem.com/products/pifithrin-alpha.html orange-red ostiolar dots/perithecia. Stroma anatomy: Ostioles (55–)70–107(–121) μm long, plane with surface or projecting to 20(–32)

μm (n = 30), (38–)45–65(–77) μm (n = 30) wide at the apex, cylindrical or conical, with periphyses 2–4.5 μm wide; apical cells inconspicuous, some marginal cells clavate and 4–6 μm wide. Perithecia (160–)190–240(–260) × (100–)120–180(–200) μm (n = 30), flask-shaped. Peridium (7–)12–19(–22) μm (n = 60) thick at the base and sides, yellow in lower parts, turning orange in KOH. Cortical layer (25–)28–41(–50) μm (n = 30) thick, around entire stroma, but hyphal, thicker and stronger pigmented in lateral and basal regions; pale yellow, distinctly paler than the peridium. Cortical HDAC inhibitor tissue a dense and compact t. angularis–globulosa of thick-walled, isodiametric to oblong cells (3.5–)5–10(–14) × (3–)4–7(–9) (n = 64) in face view and in vertical section. Subcortical tissue a loose t. intricata of thin-walled hyaline hyphae

(2–)3–5(–6) μm (n = 30) wide, partly also present in areas directly below the perithecia. Subperithecial tissue a loose t. epidermoidea of thin-walled, selleck inhibitor hyaline to yellowish cells (6–)9–19(–24) × (4–)6–12(–15) μm (n = 30). Asci 100–120 × 5–6 μm, including a stipe 28–38 μm (n = 6) long (only few intact). Ascospores hyaline, verruculose or spinulose, cells dimorphic, distal cell (4.0–)4.4–5.3(–6.0) × (3.5–)3.8–4.5(–5.0) μm, l/w (0.9–)1.1–1.3(–1.5) (n = 40), subglobose or ellipsoidal, proximal cell (4.0–)4.8–7.0(–9.0) × (2.8–)3.0–3.7(–4.3) μm, l/w (1.2–)1.4–2.1(–2.8) (n = 40), oblong or ellipsoidal, often elongate in the ascus base. Habitat: on Adenosine wood of Fraxinus. Distribution: Europe (England). Holotype:

England, West Norfolk, Dersingham, ex herb. C.B. Plowright, on (blackened) wood of Fraxinus excelsior, Nov. 1881, K(M) 61846. Notes: Hypocrea argillacea is known with certainty only from the holotype. Two attempts to recollect it during this study failed; therefore its anamorph and phylogenetic placement are unknown. The above description is based on the holotype. Superficially, H. bavarica is similar to H. argillacea, but differs by paler stroma colours and distinctly smaller ascospores. H. moravica differs in more distinct ostiolar dots present in lower numbers. H. argillacea could perhaps even be interpreted as a form of H. splendens with smaller and less brightly coloured stromata and slightly larger ascospores. Re-descriptions of H. tremelloides as ‘H. argillacea’ by Medardi (1999) and Klok (2006) without reference to the holotype may have been based on Ellis and Ellis (1985). The latter work is not recommended to be used for the identification of Hypocrea species. It is also uncertain, which species Petch (1938, p. 291) had seen when he redescribed H. argillacea. Hypocrea moravica Petr., Ann. Mycol.