Flora of New Zealand Series

≡Baeomyces pocillum Ach., Methodus: 336 (1803).

Description : Flora (1985: 118).

Chemistry : Cortex K–, C−, KC−, Pd+ red; containing fumarprotocetraric and protocetraric acids and substances Cph-1 and Cph-2 (Stenroos 1988a).

N: South Auckland (Waikaretu), Wellington (Ruahine Ra.). S: Canterbury (Cave Stream, Weka Pass, Malte Brun Ra., Mt Pibrac), Otago (Turret Head, Mt Earnslaw, Maheno). On limestone soils and basic schist, in grassland and fellfield among mosses, probably more widely distributed on calcareous substrata, 200–2500 m. Known also from Europe, Scandinavia, North and South America, Asia, Africa, Papua New Guinea, Marion I, Antarctica (Stenroos 1988a; Ahti 2000; Brodo et al. 2001; Øvstedal & Gremmen 2001; Øvstedal & Lewis Smith 2001; Ahti & Hammer 2002; Søchting et al. 2004).

Cosmopolitan

Illustrations : Thomson (1984: 156); Stenroos (1988a: 142, fig. 9E, F); Krog et al. (1994: 165); Hansen (1995: 32); Goward (1999: 124, fig. 25A); St. Clair (1999: 62); Ahti (2000: 144, fig. 79); Brodo et al. (2001: 266, pl. 257); Sérusiaux et al. (2004: 61 – as Cladonia pyxidata ssp. pocillum).

Cladonia pocillum is characterised by: the thick, rosette-forming, almost foliose, basal squamules with a chalky white lower surface; simple, short (to 20 mm tall), cup-bearing podetia, with a corticate, verruculose, squamulose to phyllidiate surface (including the cup interior); and fumarprotocetraric acid. It is restricted to calcareous substrata.