Nuytsia 16(1): 63-76 (2006)
Basionym: Data lacking.
Synonym: Index Fungorum
Protolog: Data lacking.
Type locality: Western Australia: Shire of Mullewa: 62 km to Morawa, SE of Mullewa, between Tardun & Canna, 28°45'16.6"S, 115°40'20.8"E, chenopod heath (with Atriplex nummularia and Casuarina obesa). On Atriplex nummularia, 7.1.2004, Kondratyuk, S. (20429), Kärnefelt, I. & Cranfield, R.J. (holo: PERTH 07194005; iso: CBG, KW, LD).
Barcode: Data lacking.
Coordinates: 28°45'16.6"S, 115°40'20.8"E
Thallus: small, (8-)10-25(-40) mm diam., in aggregations to 4-5 cm across; plane, with distinct c. (1-)2-3 mm wide marginal zone without apothecia, central part with numerous apothecia; upper surface evenly yellow, orange-yellow to grey or whitish; lobes well developed at the margins as rounded terminal portions of dissected thallus margin (1-)1.5-2 mm deep and (0.7-)1-2(-3) mm wide, sometimes well developed, narrow and elongated 2-4(-5) mm ling and (0.5-)1-2(-3) mm wide, total width of lobe with all secondary lobules (2-)3-4(-6) mm wide, slightly waved and with slightly developed marginal rim, loosely attached to the substrate at the marginal zone; thallus 80-110 mm thick in section; upper cortex thin, c. (5-)10-12(-17.5) mm, mesodermatous paraplectenchymatous; algal layer 16-20(-25) mm thick; medulla c. 40-50 mm thick, with single very long hyphae, c. 3 mm diam., lumina c. 1 mm diam.; lower cortex (7-)10-12 mm thick, mesodermatous paraplectenchymatous. Hapters along margins, c. 50 mm diam., c. 60 mm long. Apothecia numerous, rather large, c. (1-)1.5-2.5(-3) mm diam., disk reddish or orange, mainly plane and constricted at the basis, with well developed margin; dark yellow-orange, orange to reddish orange; thalline exciple, 25-30 mm thick, palisade paraplectenchymatous, true exciple well developed in lateral part, to 30-40 mm thick in the uppermost portion, only (5-)7-15 mm thick in basal part, pseudoprosoplectenchymatous; algae in clusters below true exciple, algal cells spherical up to (8-)15-20(-27.5) mm diam.; hymenium (45-)50-62.5 mm high; subhymenium up to 25 mm thick; paraphyses c. 2.0 mm at the basis, uppermost cells widened, with oil droplets (oil paraphyses after J. Poelt), up to 5-6 mm diam.; aski (35-)48-50 x (10-)15-16 mm; Ascospores small, ellipsoid to narrowly ellipsoid to sometimes slightly curved, (11-)12.5-15 x 5-7 mm [in water and 11-14(-16) x (4-)5-6.5 mm in K], septum c. (4-)5-6(-7) µm thick [in water and (4.5-)5-6(-7)mm in K]. (Kondratyuk et al. 2006: 64-69).
Photobiont: Data lacking.
Chemistry: Chemosyndrome A3 (cf. Søchting 1997, 2001). (Kondratyuk et al. 2006: 64-69).
Ecology: Data lacking.
Molecular data: Genbank
Distribution: Database
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