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Caloplaca decipioides Arup
Nomenclature
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Family: TeloschistaceaeGenus: Caloplaca
SUMMARY
Mycobank MB 517744
Thallus to 1.5 cm, single or coalescing with other thalli, lobate, growing radiately in rosettes with marginal lobes and the centre covered by smaller, irregularly arranged, often imbricate lobes; lobes 0.5–2.3 × 0.2–0.6 mm, slightly convex to rather flat, slightly wider toward tips, irregularly branched one to three times, divided by narrow but distinct furrows, 0.1–0.2 mm wide, surface ± smooth to finely granular near lobe tips, yellow (in shade) to dark orange or red-orange, slightly paler at margin and partly with very thin white pruina; soralia ± punctiform or irregular in outline, laminal or terminal on central lobes, initiating as globose to elongate isidia that soon dissolve into soredia; isidia 75–125 µm when globose and up to 200 µm long when elongate, in dense clusters, of the same color as the thallus; soredia 35–60 µm, rather compact with rather smooth surface, yellow to orange-yellow, contrasting against the darker thallus; cortex 20–40 µm thick, paraplectenchymatous with thin-walled cells 4–8 µm in diameter, without epinecral layer; algal layer ± continuous with trebouxioid algal cells 7–12 µm in diameter; prothallus not seen; pycnidia not seen. Apothecia not seen. Secondary chemistry (HPLC): Parietin (major), fallacinal (major), vicanicin (major, isofulgidin (major), teloschistin (major) and traces of emodin, parietinic acid and caloploicin. This chemosyndrome corresponds rather well with A+3 according to Søchting & Frödén (2002).