Neocatapyrenium cladonioideum (Vain.) H. Harada

Nat. Hist. Res., 2, 2: 129, 1993. Basionym: Siphula cladonioidea Vain. - Bot. Mag., Tokyo, 35: 47, 1921
Description: Thallus squamulose, of imbricate, 2-5 mm wide, 0.35-0.45 mm thick, sublinear to lobate, flesh-coloured to beige, matt or slightly glossy squamules forming distinct pillows. Lower surface pale brown, without rhizines and rhizohyphae, attached by by elongated basal ends. Upper cortex paraplectenchymatous, 35-50 µm thick, of 7-9 µm wide cells, with or without a thin epinecral layer; medulla white, prosoplectenchymatous, up to c. 300 µm thick; lower cortex clearly delimited from medulla,with rounded to angular cells, the lowermost ones brown-walled. Perithecia black, pyriform to globose, 0.3-0.4 mm wide, immersed in the squamules, without involucrellum. Exciple 30-40 µm thick, pale, sometimes brown in upper part only; paraphyses absent, substituted by periphyses. Asci 8-spored, clavate, the wall I-, with biseriately arranged spores. Ascospores 1-celled, hyaline, ellipsoid, (15-)16-18 x (6-)7-7.5 µm. Pycnidia laminal, small, immersed in the squamules. Conidia bacilliform, 5-7 x c. 1 µm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P- UV-. Chemistry: without lichen substances.
Note: a species with a a wide distribution in Asia, which was found also in SE Spain on calcareous rocks and soil at 850 m; to be looked for in southern Italy and Sardinia.
Growth form: Squamulose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

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Predictive model

André Aptroot -
China, Yunnan