Flora of New Zealand Series

≡Graphis mucronata Stirt., Trans. Glasgow Soc. Field Nat. 4: 95 (1876).

=Phaeographis australiensis Müll.Arg., Flora 65: 504 (1882).

Description : Flora (1985: 382 – as Phaeographis australiensis).

Chemistry : Thallus K+ yellow→red, C−, KC+ red, Pd+ orange; containing norstictic acid.

N: Northland (Three Kings Is), Auckland (Waitakere Ra., Auckland Domain), South Auckland (Pukekohe, Slipper I., Penguin I., Rotorua), Taranaki (New Plymouth). On bark of Acer, Cotoneaster, Dacrycarpus, Fraxinus, Ilex, Meryta, Pinus, Pomaderris, Quercus, Salix. A very common epiphyte on trees in parks and gardens in Auckland city, often co-dominant with Dirinaria applanata. Known also from Norfolk I., E Australia and Tasmania (Kantvilas & James 1991; Archer 2000b; McCarthy 2003c, 2006).

Australasian

Illustrations : Hayward (1977: 574, fig. 7; 575, fig. 8F); Archer (2000b: fig. 1C; fig. 2C ).

Phaeographis mucronata is characterised by: the corticolous habit; the prominent lirellae with carbonised exciple and usually distinct thalline margins; 10–12-locular ascospores, 31–50 × 7–10 μm; and norstictic acid in the medulla (K+ yellow→red).