Flora of New Zealand Series

=Lecanora pyreniospora var. paupercula Nyl. in W.A. Leighton, Bot. J. Linn. Soc. 10: 33 (1869).

Lecanora pyreniospora var. paupercula. Lectotype: New Zealand. Sine loco, W. Colenso 6369 – BM.

Description : Thallus corticolous, terricolous, lignicolous or muscicolous, creamish, ochraceous to pale-brown, thin or evanescent, finely warted to granular, never areolate, without a prothallus. Apothecia lecanorine, sessile to adnate, scattered or crowded centrally, to 1.1 mm diam.; disc dark-brown to black, plane to convex. Thalline margin concolorous with thallus, often more brownish, smooth, entire or slightly ridged and warted, excluded at maturity. Parathecium 20–30 μm wide, hyaline, pigmented brown in upper parts. Epithecium red-brown, 10–15 μm thick. Hymenium 110–130 μm tall. Paraphyses 1.5–2 μm thick, apices capitate, 3–4 μm diam., oil cells present. Hypothecium 50–90 μm thick. Asci Lecanora -type. Ascospores Conradia -type, 4-celled when mature (immature 2-celled ascospores with lumina of Physcia -type), central septum distinct, other septa indistinct, spore ontogeny type B, torus absent, 22–28 × 10–13 μm, wall finely warted.

Chemistry : TLC−, all reactions negative.

N: South Auckland (NW of Colville Coromandel Peninsula). S: Nelson (Wells Hill Ridge), Canterbury (Mt Peel), Southland (Lyttle's Flat SE of Homer Huts, Lake Monowai, Pahia Point, Waituna Lagoon). On bark of trees (Metrosideros excelsa) and on driftwood at s.l., also muscicolous. Widespread in cool temperate and often alpine habitats, being known from Britain, Europe, Scandinavia, Iceland, Romania, Russia, Turkey, Nepal, Tibet, Canada, the United States, Venezuela, Ecuador, Bolivia, Argentina, Western Australia and Tasmania (Mayrhofer et al. 2001b: 462, fig. 9; McCarthy 2003c, 2006; Nimis & Martellos 2003).

Cosmopolitan

Illustrations : Foucard (1990: pl. 292); Mayrhofer et al. (1999: 173, fig. 3A; 182, fig. 9C); Edler (2002: 40, fig. 9); Nordic Lichen Flora2 (2002: 102); Dobson (2005: 394).

Rinodina conradii is characterised by: the corticolous, terricolous, lignicolous or muscicolous habit; and 4-celled ascospores (Conradia -type), with spore ontogeny type B.