Phaeophyscia pusilloides (Zahlbr.) Essl.

Mycotaxon, 7: 313, 1978. Basionym: Physcia pusilloides Zahlbr. - Cat. Lich. Univ., 7: 678, 1931.
Synonyms: Physcia pusilla Mereschk.; Physcia suzai Nádv.
Description: Thallus foliose, heteromerous, dorsiventral, narrow-lobed, forming orbicular to irregular, up to 2(-3) cm wide rosettes. Lobes elongate and discrete to partly imbricate, 0.3-1(-1.5) mm wide, flat, grey to grey-brown, epruinose, the main lobes branching into short lateral lobes bearing capitate, substipitate soralia at the tips. Lower surface black, with simple, black rhizines. Upper and lower cortex paraplectenchymatous; medulla white. Apothecia rare, lecanorine, to 3 mm across, the thalline margin sometimes with a corona of dark rhizines. Epithecium brown; hymenium and hypothecium colourless; paraphyses slender, often forked in upper part, the apical cells clavate, with a thin dark cap. Asci 8-spored, clavate, the K/I+ blue tholus penetrated by a faintly amyloid apical cushion with parallel or diverging flanks, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-septate, brown, ellipsoid, 18-23(-25) x 7-11 µm, uniformly thick-walled, Physcia-type. Pycnidia immersed. Conidia ellipsoid. Photobiont chlorococcoid. Spot tests: all negative. Chemistry: without lichen substances.
Growth form: Foliose, narrow lobed
Substrata: bark
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Montane belt: extremely rare
Dry submediterranean belt: very rare
Humid submediterranean belt: rare
Padanian area: absent

pH of the substrata:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Rarity

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P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (12318)
2008.03.03


P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (12318)
2008.03.03


P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (12318)
2008.03.03


P.L.Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (36158)
2008.03.03