Rinodina confragosula
=Rinodina filsonii H. Mayrhofer, Beih. Nova Hedwigia 79: 517 (1984).
Description : Thallus epilithic, pale-grey, areolate or warted to granulose, relatively thick, without a prothallus. Apothecia lecanorine, innate to adnate, contiguous, to 0.6 mm diam.; disc black, finely grey-pruinose, plane to subconvex. Thalline margin entire, concolorous with thallus. Epithecium red-brown. Hymenium 100–120 μm tall. Paraphyses to 1.5 μm thick, apices capitate, 3–5 μm diam. Hypothecium to 200 μm thick, K−. Asci Lecanora -type. Ascospores Tunicata -type (internal wall thickenings of Pachysporaria -type grading into Milvina -type), spore ontogeny type A, torus well-developed, 16–23 × 10–14 μm. Pycnidia immersed. Conidia bacillar, 3–5 × 0.7–1 μm.
Chemistry : TLC−, all reactions negative.
S: Canterbury (Okains Bay Banks Peninsula). On siliceous rocks. Known also from Australia and South Africa (Mayrhofer 1984b; McCarthy 2003c, 2006; Kaschik 2006).
Southern xeric
Illustrations : Mayrhofer (1984b: 513, fig. 7; 519, fig. 13 – as Rinodina filsonii); Kaschik (2006: 48, fig. 17).
Rinodina confragosula is characterised by: the saxicolous habit; and ascospores of Tunicata -type, with a well-developed torus.
