Flora of New Zealand Series

=Rinodina gennarii Bagl., of New Zealand authors.

Description : Thallus epilithic to sometimes endolithic or epixylic, more rarely epiphytic, whitish, pale- to dark-grey or ochraceous, thin, rimose-areolate, sometimes reduced to squamules, without a prothallus. Apothecia lecanorine or rarely biatorine, adnate to sessile, frequent and often contiguous, 0.4–0.6 mm diam.; disc dark-brown to black, plane to strongly convex. Cortex up to 25 μm thick, hyaline, I−. Epithecium brown to dark-brown. Hymenium 60–85 μm tall. Paraphyses 2 μm thick, apices capitate, 3–6 μm diam. Hypothecium to 150 μm thick. Asci Lecanora -type. Ascospores Dirinaria -type (with changeovers to Physconia -type), spore ontogeny type B, torus absent or rarely indistinct, 11–17 × 6–10 μm. Pycnidia immersed. Conidia bacillar, 3–5 × 1 μm.

Chemistry : TLC−, all reactions negative.

N: Northland (Leigh), South Auckland (Marakopa), Gisborne (Muriwai Beach), Hawke's Bay (Napier, Pourerere), Wellington (Manurewa Pt, Cape Palliser, Island Bay, Worser Bay, Titahi Bay, Miramar Peninsula, Te Rewarewa Point). S: Nelson (Stephens Bay, Cable Bay, Boulder Bank, Pepin I., Kaiteriteri, Waitaria Bay), Marborough (Queen Charlotte Sound, S of Picton, White's Bay, Robin Hood Bay, Cape Campbell, Kaikoura Peninsula, Goose Bay), Canterbury (Culverden, Motunau Beach, Taylor's Mistake, Christchurch, Burwood, Banks Peninsula, Lyttelton Harbour, Tumbledown Bay, Timaru), Otago (Wanaka, St Clair, Dunedin, Lee Stream, Sutton, Taieri Beach, Maungatua, Jack's Bay, Nugget Point), Southland (Five Rivers, Limehills, Fortrose) [map in Kaschik (2006: 89, fig. 52)]. Mainly on coastal rocks, also on coastal driftwood, decorticated wood and more rarely on bark of introduced trees in parks gardens and along roadsides (Acer pseudoplatanus, Araucaria heterophylla, Malus domestica, Populus yunnanensis, Salix babylonica), associating with species of Caloplaca, Lecanora, Pertusaria, Physcia, Tylothallia pahiensis, Xanthoria ligulata. Known also from Europe, North America, Australia, South Africa, North and South America (Mayrhofer 1984a, 1984b; Matzer & Mayrhofer 1996; Trinkaus et al. 1999; McCarthy 2003c, 2006; Nimis & Martellos 2003).

Cosmopolitan

Illustrations : Mayrhofer (1983: 268, fig. 10); Foucard (1990, pl. 294); Malcolm & Galloway (1997: 109, 111, 126); Trinkaus et al. (1999: 19, figs 1–5); Dobson (2000: 348; 2005: 395); Malcolm & Malcolm (2000: 58); Lumbsch et al. (2001: 7); Edler (2002: 45, fig. 11; 47, fig. 12); Nordic Lichen Flora Vol. 2 (2002: 103) – all as Rinodina gennarii Bagl.; Kaschik (2006: 87, fig. 50; 90, figs 54, 55).

Rinodina oleae is characterised by: the saxicolous/lignicolous (rarely corticolous) habit; the numerous, often crowded, small apothecia; and Dirinaria -type ascospores, with type B ontogeny.