, scattered to gregarious, erumpent to superficial, globose to subglobose, roughened, often covered with white crustose covering, with subiculum, with a broad compressed papilla and long and slit-like ostiole (Fig. 72a). Peridium 100–250 μm thick, not of uniform thickness throughout entire wall area, composed of two cell types, one is of GDC-0941 order lightly pigmented thin-walled cells of textura prismatica, cells up to 17 × 3 μm diam., cell wall <1 μm thick, intermingled with small heavily pigmented thick-walled cells of textura globosa, cells up to 5 μm diam., cell wall 2–3 μm thick (Fig. 72b). Hamathecium of dense, long trabeculate pseudoparaphyses, 1.2–1.8 μm broad,
anastomosing and branching, rarely septate, embedded in mucilage (Fig. 72c). Asci 90–150(−180) × 8–13(−17) μm (\( \barx = 120.5 \times 11.5\mu m \), n = 10), 8-spored, bitunicate, fissitunicate dehiscence not BIBW2992 price observed, cylindro-clavate, with a long, narrowed, furcate pedicel which is up to 75 μm long, and with a small ocular chamber
best seen in immature asci (up to 2 μm wide × 1 μm high) (Fig. 72d and e). Ascospores 18–26 × 5–6 μm (\( \barx = 22.4 \times 5.6\mu m \), n = 10) biseriate in upper part and uniseriate in lower part, fusoid, pale brown, 1-septate, deeply constricted at the septum, smooth or rarely verrucose (Fig. 72f, g and h). Anamorph: none reported. Material examined: Wright s.n., Herb. G.E. Massee, (NY 921990, possible isotype); CUBA, as Ostropa albocincta, C. Wright 345, 1879 (K(M): 143941, syntype). Notes Morphology Ostropella was established by Saccardo (1883) as a subgenus of Ostropa and was buy LXH254 monotypic being represented by O. albocincta. The genus was formally established (as Ostropella) and redescribed by von Methamphetamine Höhnel (1918b) and later the description was modified
by several workers (Barr 1990a; Huhndorf 1993; Müller and von Arx 1962; Müller and Dennis 1965). Ostropella is characterized by having large ascomata, a conspicuous ridged compressed papilla with an elongated slit-like ostiole, and 1-septate lightly pigmented ascospores. The affinity of Ostropella to Schizostoma sensu Sacc. was first recognized by von Höhnel (1918b) and this was accepted by Müller and von Arx (1962) and they transferred Schizostoma pachythele (Berk. & Broome) Sacc. and Ostreionella fusispora Seaver to Ostropella. Holm and Yue (1987), however, disagreed with this transfer because of the differences in ascomatal vestiture and the rather thick wall comprising two cell types of Ostropella albocincta differ from those of Schizostoma pachythele. Chesters and Bell (1970) suggested that S. pachythele, Xenolophium leve and X. verrucosum Syd. are three varieties under Lophiostoma pachythele (Berk. & Broome) Chesters & A.E. Bell. The conspecific status of the three taxa was supported by Holm and Yue (1987). Although no combination was made, Holm and Yue (1987) assigned these taxa to Xenolophium instead of Lophiostoma.