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Australian Biological Resources Study

Checklist of the Lichens of Australia and its Island Territories
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References
Bulbothrix bicornuta (Müll.Arg.) Hale
  Phytologia 28: 480 (1974); Parmelia bicornuta Müll.Arg., Flora 74: 377 (1891). T: Rio de Janeiro, Brazil, Leyland; lecto: BM; isolecto: G, fide M.E.Hale, Smithsonian Contr. Bot. 32: 11 (1976).  
  Thallus adnate, to 4–6 cm wide. Lobes sublinear-elongate, 0.6–1.5 mm wide; margins with dense bulbate cilia; cilia strongly inflated, becoming apically branched. Upper surface dirty white to pale grey, flat, shiny, emaculate, continuous, lacking isidia. Medulla white. Lower surface black; rhizines dense, densely branched, brown to black. Apothecia common, sessile, 1–4 mm wide; thalline exciple ecoronate. Ascospores bicornute, 8–10 × 4–5 µm. Pycnidia not seen. CHEMISTRY: cortex K+ yellow; medulla K-, C+ red, KC+ red, P-; containing atranorin, chloratranorin and lecanoric acid (major).
  A rare species in Australia, occurring on bark on mangroves in north-eastern Qld (Hinchinbrook Is.). This species was previously only known from the type collection from Brazil.  
  Elix (1994a)  
Checklist Index
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References


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