in Bulletin of the British Museum (Natural History), Botany Series 16 (2): 163 - 169.
Basionym: xxx.
Synonym: Index Fungorum
Type: xxx.
Thallus: Corticolous, pale green, caespitose, erect to subpendulous, up to 4 cm long, exceptions to 6 cm; branching sparse, subdichotomous to irregular, additional side branchlets occur on narrow branches; branch width (0.5 -) 1 - 5 (- 10) mm, branches compressed, narrow and canaliculate or broad and flat, apices usually forked, narrow branches with fine pointed apices broad branches with dissected apices; surface shiny and smooth or matt and rugose, becoming coarse with chondroid strands showing at the surface, often horny in texture; holdfast delimited or diffuse (if growing in colonies); soralia absent. Apothecia common, laminal at the axil of bifurcating branches (to 5 mm diam.) or laminal towards the branch apices (0.5 - 1.0 mm diam.), marginal and subterminal on narrow canaliculate branches (0.5 - 1.5 mm diam.), laminal on broad branches (2 - 10 mm diam.) at or near the apex margin, with smaller apothecia on the same branch near the centre; disc concave becoming plane, rarely convex; margin thick to thin, persistent, often inrolled; spores ellipsoid, straight or curved, 10 - 12 (- 16) x 4 - 5 (- 6) µm.
Photobiont:
Chemistry: Sekikaic acid (± trace homosekikaic acid or trace divaricatic acid), or usnic acid only, or divaricatic acid and usnic acid.
Ecology: Has a wide distribution in the warm to cool temperate regions of eastern Australia, occurring at altitudes from sea level to over 1300 m.
Molecular data: Genbank
Distribution: Database
Note: