Ascomata relatively small, gregarious, immersed to erumpent, globose or subglobose, forming under a clypeus, papillate, ostiolate. Peridium thin, a single layer comprising hyaline thin-walled cells of textura angularis or textura prismatica. Hamathecium of septate pseudoparaphyses. Asci (2–4-)8-spored, bitunicate, cylindrical to cylindro-clavate, with a short, furcate pedicel, and wide ocular chamber. Ascospores broadly elliptic to subglobose, often apiculate at both ends, pale to dark brown, aseptate, with a germ slit. Anamorphs reported for genus: none. Literature: von Arx and Müller 1975; Barr 1976. Type species Loculohypoxylon grandineum

(Berk. & Rav.) Barr, Mycotaxon 3: 326 (1976). (Fig. 49) Fig. 49 Loculohypoxylon grandineum (from NY). a Appearance of ascomata on the host surface. b Habitat section of ascomata. c Section of an ascoma. Note the pale brown thin-walled https://www.selleckchem.com/Wnt.html peridium cells. d, e Uniseriate ascospores in asci. f–f Cylindro-clavate asci with ascospores. Note the ocular chamber in (g). Scale bars: a = 100 μm, b = 200 μm, c = 50 μm, d–h = 10 μm ≡ Diatrype grandinea Berk. & Rav., in Berkeley, Grevillea 4: 95 (1876). Ascomata 85–130 μm high × 75–145 μm diam., gregarious, immersed to widely erumpent, globose or subglobose, under

a reddish brown to black clypeus, papillate, ostiolate (Fig. 49a and b). Peridium 18–30 μm thick laterally, 1-layered, composed of hyaline thin-walled cells of textura angularis to prismatica, cells up to 5 × 9 μm diam., cell wall

0.5–1 μm thick, apex cells smaller and walls thicker (Fig. 49c). Hamathecium comprising 2–3 μm broad, Pitavastatin nmr septate pseudoparaphyses. Asci 70–90 × 10–12.5 μm (\( \barx = 76.5 \times 10.9\mu m \), n = 10), (2–4-)8-spored, bitunicate, cylindrical to cylindro-clavate, with a short, furcate pedicel, up to 25 μm long, with a wide ocular chamber (Fig. 49f, g, and h). Ascospores 7.5–10 × 5–7 μm (\( \barx = 8.3 \times 5.9\mu m \), n = 10), uniseriate to partially overlapping at the upper part, broadly elliptic to subglobose, often apiculate at both ends, pale to dark brown, aseptate, with a germ slit (Fig. 49d and e). Anamorph: none reported. Material examined: USA, New Jersey, Newfield, Interleukin-2 receptor on bark of Quercus coccinea, Sept. 1878, as Diatrype grandinea, Ellis N.A.F. 494 (NY, MASS); on Quercus sp. wood, Nov. 1893, as Anthostoma grandinea B. & Rav., Ellis & Everhart, N.A.F. 494 (NY); Newfield, Oct. 1881, as Diatrype grandinea (NY); Newfield, Jan. 1882, on Quercus coccinea, as Diatrype grandinea B. & Rav, Ex Herb Ellis (NY); Newfield, Nov. 1893, as Anthostoma grandinea, on bark of fallen trunks of Quercus coccinea (NY). Notes Morphology Loculohypoxylon grandineum is one of the rare pleosporalean species having aseptate ascospores. When emphasis is given to ascospore morphology, Semidelitschia (monotypified by S. agasmatica Cain & Luck-Allen) is the most comparable genus.