Pseudocyphellaria hookeri
≡Sticta hookeri C.Bab. in J.D. Hooker, Fl. Nov. Zel. 2: 282 (1855).
≡Stictina hookeri (C.Bab.) Nyl., Syn. meth. lich. 1 (2): 336 (1860).
≡Saccardoa hookeri (C.Bab.) Trevis., Lichenotheca veneta exs. 75 (1869).
≡Cyanisticta hookeri (C.Bab.) Gyeln., Feddes Reprium Spec. Nov. Veg. 29: 2 (1931).
Lectotype: New Zealand. Northland, Bay of Islands, J.D. Hooker – BM [fide Galloway & James (1980: 299)].
Descriptions : Flora (1985: 447). See also Galloway (1988a: 166–167).
Chemistry : Methyl evernate, tenuiorin, methyl lecanorate, methyl gyrophorate, evernic acid (tr.), gyrophoric acid, hopane-6α,7β,22-triol, 7β-acetoxyhopan-6α,22-diol(tr.), 6α-acetoxyhopan-7β,22-diol (tr.), norstictic (tr.), stictic, cryptostictic, constictic and hypostictic (tr.) acids and traces of pulvinic acid, pulvinic dilactone and calycin.
N: Northland (Cape Karikari) to Wellington (Manawatu). S: Nelson (Tasman Mts, Lake Rotoroa), Westland (Jackson Bay) [map in Galloway (1988a: 168, fig. 81)]. Mainly a species of northern coastal forest, characteristic of cool, moist, shaded habitats (gullies, streamsides, on successional shrubs or in standing forest or forest remnants). It is commonly a twig species and is often richly developed on young, regenerating Dacrycarpus dacrydioides.
Endemic
Illustrations : Babington (1855: pl. CXXVB); Galloway (1988a: 167, fig. 80).
Pseudocyphellaria hookeri is characterised by: broadly laciniate lobes with entire, sinuous, crenate to irregularly convolute-sublobulate margins; a strongly reticulate-faveolate upper surface with whitish buff maculae but without isidia, phyllidia, pseudocyphellae or soredia; a white medulla; a cyanobacterial photobiont; a wrinkled–bullate lower surface with scattered, minute, whitish or pale-yellow pseudocyphellae; sessile to pedicellate apothecia with granular-roughened, black, epruinose discs; a granular olive-brown epithecium turning violet-purple in K; and a complex chemistry of depsides, hopane triterpenoids, depsidones and traces of yellow pigments.
