Flora of New Zealand Series

≡Lichen fascicularis L., Mantissa Pl. 1: 133 (1767).

Holotype: New Zealand. Westland, Otira Gorge, just below lower Otira bridge, on mossy rocks and stone wall by the road, belt of mixed rainforest, locally abundant, c. 420 m, 29.iii.1970, G. Degelius NZ–2 – UPS.

Description : Flora (1985: 135).

Description : Flora (1985: 135).

S: Westland (Otira Gorge), Canterbury (Cass, Upper Godley Valley, Peel Forest), Otago (Glen Lyon Stn, Maungatua), Southland (Homer). Forming small cushions on exposed or slightly sheltered mossy rocks or on soil on rocks, rarely on bare rock, occasionally on bark. Mainly subalpine, up to 1800 m. Also known from SE Australia (Filson 1992c: 164; McCarthy 2003c, 2006).

N: S: Northland to Southland, s.l. to subalpine, most common in mixed rain forest and Nothofagus forests. Known also from Scandinavia, Europe, Great Britain, Greece, East Africa, South Africa, Indonesia, Japan, the United States, Mexico, Chile and Australia (Degelius 1954, 1974; Swinscow & Krog 1988; Kantvilas 1990c; Filson 1992c; Galloway & Quilhot 1999; McCarthy 2003c, 2006; Nimis & Martellos 2003).

Australasian

Cosmopolitan

Illustration : Degelius (1974: 100, fig. 25).

Illustrations : Degelius (1954: 454, fig. 73); Jørgensen et al. (1994a: 310, fig. 30); Wirth (1995b: 356); Kantvilas & Jarman (1999: 57); Thor & Arvidsson (1999: 253); Malcolm & Malcolm (2000: 41, 114).

Collema durietzii is characterised by: the saxicolous (rarely corticolous) habit; rather large thalli (to 7 cm diam.) with fenestrate to crowded-lobulate lobes without isidia, forming dense cushions, the margins incised and undulate, imparting a distinctive "crisped" appearance; numerous, densely crowded, sessile apothecia with a dark-red to blackish, epruinose disc; and 5-septate ascospores, 40–60(–70) × (4.5–)6–6.5 μm. C. fasciculare (L.) Weber ex F.H.Wigg.,  Prim. Fl. Holsat. : 98 (1780).

Two additional varieties are recognised in New Zealand populations: var. colensoi and var. microcarpum