Flora of New Zealand Series

Holotype: New Zealand. Stewart I., lower Kopeka River on Coprosma foetidissima roots on Metrosideros in riverine rata-kamahi-totara-miro forest, c. 10 m, 12.ii.1980, C.D. Meurk s.n. – CHR 375960. Isotype – BM.

Descriptions : Flora (1985: 489). See also Galloway (1988a: 126–128).

Chemistry : Methyl evernate, tenuiorin, methyl lecanorate, evernic acid (tr.), gyrophoric acid (tr.), hopane-7β,22-diol, hopane-6α,7β,22-triol, 7β-acetoxyhopan-6α,22-diol (tr.), 6α-acetoxyhopan-7β,22-diol (tr.), several unidentified triterpenoids, norstictic (tr.), stictic, hypostictic, cryptostictic, and constictic acids.

N: Gisborne (Mt Hikurangi, Lake Waikareiti, Lake Waikaremoana), Wellington (Kaimanawa Ra. to Wellington). S: Nelson to Fiordland and eastwards to Mt Peel (S Canterbury). St: (N coast to Port Pegasus). C: [map in Galloway (1988a: 129, fig. 58)]. An epiphyte of twigs of shrubs and trees in lowland to subalpine forest and scrub habitats, s.l. to 800 m.

Endemic

Illustration : Galloway (1988a: 128, fig. 57).

Pseudocyphellaria durietzii is characterised by: dichotomously branching, linear-elongate to somewhat imbricate lobes with entire to crenulate margins; a deeply and regularly reticulate-faveolate upper surface without isidia, maculae, phyllidia, pseudocyphellae or soredia; a white medulla; a green photobiont; a pale-buff wrinkled–bullate, glabrous to thinly tomentose lower surface with scattered, white pseudocyphellae; marginal, subpedicellate apothecia with a red-brown to black, epruinose disc; a smoky grey-brown epithecium that turns vinous-purple in K; and a complex chemistry of depsides, a hopane-triol, and depsidones.