ITALIC 7.0

Phaeophyscia rubropulchra (Degel.) Essl.

Bot. Not., 131: 262, 1978. Basionym: Physcia orbicularis f. rubropulchra Degel. - Ark. F. Bot., 30A, 1: 58, 1942.

Synonyms:

Distribution: N - VG (Masson 2008), Frl (Masson 2008). C - Laz (Masson 2008).

Description: Thallus foliose, heteromerous, dorsiventral, narrow-lobed, closely adnate in the center, forming orbicular to usually irregular, 1-3 cm wide rosettes, the individual thalli often coalescing to cover larger surfaces. Lobes grey to pale brown in sun-forms, 0.3-1 mm broad, plane to weakly concave, epruinose, ascending at tips, with terminal, labriform soralia with granulose soredia which are mostly >40 µm in diam. Lower surface black, with abundant, black, mostly simple rhizines. Upper cortex paraplectenchymatous, 12-24 µm thick; medulla yellow to orange-red; lower cortex paraplectenchymatous, 14-24 µm thick. Apothecia very rare, lecanorine. 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, Pachysporaria-type, 23-39 x 10-16 μm. Pycnidia rare. Photobiont chlorococcoid. Spot tests: cortex K-, C-, KC-, P-; medulla K+ red, C+ red. Chemistry: medulla with skyrin and fatty acids.

Note: a mainly mild-temperate epiphytic species known from eastern North America and West Asia, with a few relict stations in Europe (see Masson 2008).

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

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: extremely rare

Padanian area: absent

Humid submediterranean belt: rare

Humid mediterranean belt: absent

Dry mediterranean belt: absent

pH of the substrata:

1

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5

(info)

Solar irradiation:

1

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5

(info)

Aridity:

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5

(info)

Eutrophication:

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5

(info)

Poleotolerance:

0

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3

(info)

Altitudinal distribution:

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6

(info)

Predictive model

Index Fungorum GBIF

Ed Uebel (own work) – Wikimedia Commons – CC BY-SA 3.0

Mark Rahill - CC BY-SA 4.0

USA

Mark Rahill CC BY-SA 4.0

USA, Vermont

Mark Rahill CC BY-SA 4.0

USA, Vermont

Ed Uebel (own work) – Wikimedia Commons – CC BY-SA 3.0