Archer, Phaeographis and Phaeographina (Graphidaceae) 
343 
Phaeographina wilsonii AW. Archer, sp. nov. (Fig. In, 4b) 
Phaeographina stramineoglauca similis sed lirellis sessilis conspicuisque, et acido stictico 
praesenti differt. 
Type: Australia. Queensland: Upper Coomera, F. Wilson s.n., no date [c. 1890] (holo 
NSW 439104). 
Thallus pale greenish brown, thin, corticolous, surface smooth and shiny; apothecia 
lirelliform, conspicuous, scattered, black, sessile, lips closed, straight, curved or 
sinuous, often branched, with conspicuous thalline margin, the carbonised exciple 
becoming white pruinose, 1-5 mm long, 0.3-0.5 mm wide; proper exciple thin, 
completely carbonised, very thin at the base; hymenium 100-130 pm tall; ascospores 
ellipsoid, pale brown, muriform, 36-53 pm long, 15-22 pm wide, 8-11 x 2-5 locular. 
Chemistry: stictic acid. 
Distribution: endemic; known only from the type specimen from south-eastern 
Queensland. 
Notes: Phaeographina zvilsonii is characterised by black lirellae with conspicuous white 
thalline margins, the completely carbonised proper exciple and the presence of stictic acid. 
The species resembles P. stramimoglacuca (Vain.) Zahlbr. (Vainio 1920) as the lirellae in 
both species have a completely carbonised proper exciple and the ascospores are of 
similar size, 45-52 x 18-25 pm in P. stramineoglauca. However, the lirella in this species 
are somewhat immersed and the thallus contains no lichen compounds. The species 
also superficially resembles P. caesioradians (Leight.) Redinger but that species also 
lacks lichen compounds and has smaller ascospores. 
Etymology: The species is named after F.R.M. Wilson (1832-1903), an early collector of 
lichens in Australia. 
Excluded Species 
Phaeographina contexta (Pers.) Mull. Arg. 
(Muller in Balfour 1888b: 379) 
Emblemia contexta Pers. 
(Persoon in Gaudichaud 1826:184) 
This species has hyaline, muriform ascospores (Nylander 1868; Leighton, 1869; Vainio 
1920) and is more properly placed in the genus Graphina. The combination Graphina 
contexta (Pers.) Redinger was made (Redinger 1936b) but erroneously attributed to 
Muller (Mull. Arg.).The species was reported from Australia by Muller (1891) but his 
specimen lacked ascospores. 
Acknowledgments 
The author is grateful to the Herbaria cited above for the loan of type and other 
specimens, and to the National Herbarium of New South Wales (NSW) for funding 
provided through the New South Wales Diversity Strategy, for permission to use the 
facilities of the Herbarium and for arranging the loan of the specimens cited above, 
and to Dr. P. Wilson for help with Latin and Greek, and to Ms. C. Wardrop (NSW) for 
the drawings. 
