Flora of New Zealand Series

≡Porinula setifera Malcolm & Vězda, Folia Geobot. Phytotax. (Praha) 30: 317 (1995).

≡Porinella setifera (Malcolm & Vězda) Vězda, Acta Mus. Richnov., Sect. natur. 11 (2): 62 (2004).

Holotype: New Zealand. South Island. Nelson, York Valley, 41°18.2's, 173°16.5'E, 200 m, on Polystichum, 11.xi.1993, W.M. Malcolm 1285 – CHR 413962; isotype – Herb. A. Vězda.

Description : Thallus epiphyllous, crustose, very thin, greyish white, somewhat translucent, without a prothallus; to 10 μm thick dominate by photobiont layer. Photobiont green, Phycopeltis, forming a flat plate of rectangular, radiating cells. Perithecia solitary, central, subglobose, 0.1 mm diam., whitish, slightly darkened around the ostiole, partly covered with abundant whitish setae fused into bundles. Setae simple, straight, 70–90 μm long, 5 μm thick at base, tapering towards apex, indistinctly septate. Perithecial walls 10–15 μm thick, colourless, plectenchymatous, of closely fused hyphae. Periphyses 10–12 μm long and 1 μm thick. Paraphysoids zigzag, simple or rarely branched, 1 μm thick. Asci clavate, distinctly stalked at base, apex round, fissitunicate, the wall (exoascus) 2 μm thick, thickened apically, I− (wine-red), 4–8-spored. Ascospores ellipsoidal, 1-septate, constricted at septa, the inferior cell tapering and pointed, 15–20 × 5–8 μm.

S: Nelson (York Valley) on Polystichum. Recently recorded from Tasmania (McCarthy et al. 2001) and from Valdivian rainforest in Chile (Sérusiaux & Lücking 2003; Lücking et al. 2003).

Austral

Illustrations : Malcolm & Vězda (1995d: 317, fig. 2 – as Porinula setifera); Sérusiaux & Lücking (2003: 165, fig. 1E); Lücking et al. (2003: 26, fig. 3E).

Caprettia setifera is characterised by: the epiphyllous habit; the small, hyaline perithecia which are brown around the ostiole and partly covered with abundant whitish setae fused into bundles; stalked, fissitunicate asci; 1-septate ascospores, constricted at septa and with a tapering inferior cell.