7− 0.9 μm \( \left( \overline x = 0.83\,\,\text μm,\mathrmn = 15 \right) \) thick, bearing a single apical appendage, usually 2–5 μm long \( \left( \overline x = 4.5\,\,\text μm,\mathrmn = 15 \right) \). Culture characteristics: On
OA, Colonies appeared flat with an irregular margin, initially hyaline with abundant mycelium, gradually becoming greenish after 3–4 d. Conidiophores produced conidial masses on media. On MEA, colonies appeared woolly, puffy, flat, irregular, initially white with abundant mycelium, gradually becoming greenish to dark green after 2–3 d and white hyphae on the undulate margin, eventually turning black; reverse dark green to black. At 27 °C, in the dark, mycelium reached the edge of the Petri-dish in 20 d with a growth rate of 0.45 cm per day. On PDA, colonies appeared woolly, rather
fast growing, initially CB-839 datasheet white with abundant mycelium, gradually becoming greenish to dark green after 2–3 d and white hyphae on the undulate margin, eventually turning dark green to black; reverse black. After 15 days in the dark at 27 °C, mycelium reached the edge of the Petri-dish with a growth rate of 0.60 cm per day. Material selleck chemical examined: THAILAND, Chiang Rai, Muang District, T. Nanglae, Pa Sang Wiwat, on necrotic leaf spot on leaf of Crinum sp. July 2011, S. Wikee CPC20271 (Pexidartinib mw MFLUCC 10–0132). Pyrenostigme Syd., Ann. Mycol. 24: 370 (1926) MycoBank: MB4602 Parasitic on living leaves of Siparunea patelliformis. Ascomata black to dark brown, semi-immersed to superficial, scattered, globose to subglobose, thick walled. Peridium composed of brown to black, darkly pigmented, small, thick-walled cells of textura angularis. Pseudoparaphyses not observed. Asci 8–spored, bitunicate, fissitunicate, clavate to broadly-clavate, with a short, narrow, furcate pedicel, and with click here an
ocular chamber. Ascospores biseriate, hyaline, aseptate, fusiform to ellipsoid. Asexual state not established. Notes: This genus is clearly typical of Botryosphaeriales and appears to be distinct from other genera in the order. We accept it in this study but it should certainly be recollected and sequenced to confirm its uniqueness as a genus. Generic type: Pyrenostigme siparunae Pyrenostigme siparunae Syd., Ann. Mycol. 24: 370 (1926) MycoBank: MB278247 (Fig. 32) Fig. 32 Pyrenostigme siparunae (S−F7628, lectotype) a Herbarium packet b−c Ascostromata on host substrate. d Section of ascostroma (TS). e. Section of peridium comprising a few layers of cells. f−i Asci. j−l Ascospores. Scale bars: d = 80 μm, e = 50 μm, f−g = 20 μm, h−I = 50 μm, j−l = 10 μm Parasitic on living leaves of Siparunea patelliformis. Ascomata 130–170 μm high, 150–180 μm wide \( \left( \overline x = 156 \times 169\,\upmu \mathrmm,\mathrmn = 10 \right) \), semi-immersed to superficial, scattered, globose to subglobose, black to dark brown, thick-walled, apex usually widely porate, papillate.