Flora of New Zealand Series

≡Pannaria pycnophora (Nyl.) Müll.Arg., Bull. Herb. Boissier 2, App. 1: 43 (1894).

≡Parmeliella pycnophora (Nyl.) R.Sant., Ark. Bot. 31A (7): 15 (1944). [For additional synonymy see Galloway & Jørgensen (1987: 386)].

Lectotype: New Zealand. Greymouth, super vegetabilia destructa, Richard Helms – H-NYL 30952 [fide Galloway (1985a: 244)]. Isolectotype– W.

Description : Flora (1985: 244).

Chemistry : TLC−, all reactions negative.

N: Northland (Three Kings Is, Poor Knights Is,) South Auckland (West Taupo, Waimiha Stream, Waipakihi Valley Kaimanawa Ra.), Wellington (Mamaku, Waiotapu Valley, Moerangi, E of Chateau Tongariro). S: Nelson (Rahu Swamp near Reefton), Westland (Kelly's Creek) to Fiordland and western Southland. St: (Halfmoon Bay). A: C: On twigs of trees and shrubs in moist, humid, rather low-light habitats, especially in disturbed areas or at forest margins. It is an epiphyte of the following phorophytes: Coprosma, Cyathodes, Dacrycarpus, Griselinia, Kunzea, Leptospermum, Lophomyrtus, Olearia, Pseudowintera and Weinmannia. Known also from south-eastern Australia and Tasmania (Galloway & Jørgensen 1987; Kantvilas 1990c; Jørgensen & Galloway 1992b; McCarthy 2003c, 2006), southern Chile including Juan Fernandez (Santessson 1944; Elix & McCarthy 1998; Galloway & Quilhot 1999) and Tristan da Cunha (Jørgensen 1977).

Austral

Illustrations : Santesson (1944: 16, figs 4, 5; 17, fig. 6); Galloway & Jørgensen (1987: 387, fig. 27A, B); Jørgensen & Galloway (1992b: 259, fig. 92A); Malcolm & Galloway (1997: 100, 117, 157).

Leioderma pycnophorum is very similar to L. erythrocarpum in gross morphology, but differs in its scabrid upper surface (×10 lens), and in the negative hymenial iodine reaction. It occurs in two widely disjunct Southern Hemisphere areas, viz. (1) New Zealand, SE Australia and Tasmania and (2) southern Chile and Tristan da Cunha. It appears to be more common in the first region than the second.