Flora of New Zealand Series

Holotype: New Zealand. South I., Nelson, Nelson Lakes National Park, Lake Rotoiti, Peninsula. On Kunzea ericoides, 29.ii.1980, D.J. Galloway s.n. – CHR 343279. Isotype – BM.

Descriptions : Flora (1985: 451). See also Galloway (1988a: 191–193).

Chemistry : Methyl evernate (tr.), tenuiorin, methyl lecanorate (tr.), methyl gyrophorate, gyrophoric acid (tr.), hopane-15α,22-diol, hopane-6α,7β,22-triol, salazinic, norstictic (tr.), stictic, cryptostictic (tr.), and constictic acids, pulvinic acid, pulvinic dilactone and calycin.

N: Gisborne (Lake Waikaremoana), Hawke's Bay (Kaweka Ra., Kuripapango). S: Nelson [map in Galloway (1988a: 194, fig. 96)]. In subalpine habitats, on Kunzea ericoides, Leptospermum scoparium and Olearia avicennifolia in areas of high rainfall and in moderate shade, 500–900 m.

Endemic

Illustrations : Renner & Galloway (1982: 217, fig. 5); Galloway (1988a: 192, fig. 95).

Pseudocyphellaria margaretiae is characterised by: rather short, rounded, imbricate lobes with entire, densely and evenly tomentose margins; the upper surface is densely tomentose and lacks isidia, phyllidia, pseudocyphellae or soredia; a white medulla; a cyanobacterial photobiont; yellow pseudocyphellae on the lower surface sunk in tomentum; and a complex chemistry of depsidones, hopane triterpenoids, depsides and pigments.