Heteroplacidium phaeocarpoides (Nyl.) Breuss

Ann. naturhist. Mus. Wien, Ser. B, Bot. Zool., 98 (suppl.): 40, 1996. Basionym: Endocarpon phaeocarpoides Nyl. - Flora, 62: 358, 1879
Synonyms: Catapyrenium phaeocarpoides (Nyl.) Breuss; Dermatocarpon phaeocarpoides (Nyl.) Zahlbr.; Endopyrenium phaeocarpoides (Nyl.) Boistel
Distribution:
Description: Thallus squamulose, the squamules flat, very small, 0.5-1 mm wide, 0.15-0.25 mm thick, scattered to contiguous, greyish brown, matt, pruinose, attached by colourless, 4-5 μm thick rhizohyphae. Upper cortex paraplectenchymatous, 20-30 μm thick, with a thin epinecral layer; algal layer occupying almost the entire thallus; medulla undifferentiated, poorly delimited towards the lower cortex of thin-walled, isodiametric cells. Perithecia globose, up to 0.45 mm wide, immersed in the squamules. Exciple pale throughout; paraphyses absent, substituted by periphyses. Asci 8-spored, oblong-clavate, the wall I-, with biseriatey arranged spores. Ascospores 1-celled, hyaline, broadly ellipsoid, 11-13 x 8-10 μm. Pycnidia laminal, black, immersed; Conidia oblong-ellipsoid, 2.5-3.5 x 1-1.5 μm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a mainly Mediterranean-Macaronesian species of sandy soil, known from the Iberian Peninsula, Spain, Macaronesia, North Africa and the Ukraine; to be looked for in Mediterranean Italy.
Growth form: Squamulose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

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Altitudinal distribution:

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Predictive model