Archer, Phaeographis and Phaeographina (Graphidaceae) 
337 
epruinose; ascospores 8 per ascus, irregularly 2-seriate, ellipsoid, pale brown, 15-18 pm 
long, 7-9 pm wide, 4x2 locular. 
Chemistry: no lichen compounds found. 
Distribution: occurs in the Philippines and, in Australia, in Queensland. The only 
reported substrate in Australia is Acacia. 
Notes: Phaeographina exilior is characterised by the inconspicuous, immersed, brown, 
epruinose lirellae, the small ascospores and the absence of lichen compounds. The 
species resembles Graphina brachyspora Mull. Arg. but the lirellae are smaller and less 
conspicuous and less well-defined than those in the Graphina species. 
Specimen examined: Queensland: Big Tableland, 26 km S of Cooktown, Streimann 30884, Jul 1984 
(CANB). 
Phaeographina fuscescens AW. Archer, sp. nov. (Fig. lg, 3a) 
Phaeographina isidiosa similis sed acido norstictico deficient! differt. 
Type: Australia. Norfolk Island: Mount Pitt Reserve, track from Red Road to Mount 
Bates, 29°0'40"S, 167°56'40"E, alt. 220 m, on treelet stem, H. Streimann 34499, Dec 1984 
(holo CANB). 
Thallus pale to dark fawn, thin, corticolous, surface smooth and somewhat shiny; 
apothecia lirelliform, brown, numerous, crowded, initially fissurine and indicated by 
a thin brown line on the thallus surface, becoming subsessile to sesile, straight, curved 
or sinuous, sometimes branched, lips closed, 1—3(—4) mm long, 0.15-0.3 mm wide; 
proper exciple apically carbonised, covered by a thin thalline layer; hymenium 125-150 
pm tall; ascospores 8 per ascus, ellipsoid, pale brown, 13-18 pm long, 6-10 pm wide, 
4x2 locular. 
Chemistry: no lichen compounds found. 
Distribution: endemic; known only from north-eastern Queensland and Norfolk Island. 
Notes: Phaeographina fuscescens is is characterised by the fawn thallus, the brown 
lirellae, the apically carbonised proper exciple, the small brown muriform ascospores 
and the absence of lichen compounds. The apically carbonised exciple is covered with 
a thin thalline margin as in the more conspicuous P. quassiicola. The new species is 
distinguished from the similar P. insidiosa (Vain.) Zahlbr. by the absence of norstictic 
acid, present in P. isidiosa (Wirth & Hale 1963), and is distinct from P. exilior (Vain.) 
Zahlbr. which has immersed open, black lirellae. 
Etymology: The epithet fuscescens, becoming brown, refers to the brown colour of the 
thallus and lirellae. 
Specimen examined: Queensland: W of Palm Cove, ca. 25 km N of Cairns, Kalb 19966, 
Aug 1988 (herb. Kalb). 
Phaeographina hadrospora AW. Archer, sp. nov. (Fig. lh, 3b) 
Phaeographina tumulata similis sed ascosporiis majoribus differt. 
Type: Australia. Queensland: Goodna, F.R.M Wilson s.n., no date (holo NSW 426677). 
Thallus pale greenish fawn, thin, corticolous, surface subtuberculate, cracked and 
shiny; apothecia lirelliform, inconspicuous, scattered, concolorous with the thallus, 
sessile, short, straight or curved, unbranched, lips closed, 1—2(—3) mm long, 0.5-0.8 mm 
wide, with a conspicuous, swollen thalline margin; proper exciple lacking; hymenium 
250-300 pm tall; ascospores 1 per ascus, elongate-ellipsoid, pale brown, 155-225 pm 
long, 40-65 pm wide, densely muriform. 
