Protoparmelia memnonia Hafellner & Türk

Stapfia, 76: 157, 2001.
Synonyms: Lecanora picea auct. non (Dicks.) Nyl.; Protoparmelia picea auct. non (Dicks.) Hafellner
Distribution: N - Piem (Isocrono & al. 2004, Isocrono & Piervittori 2008), VA (Piervittori & Isocrono 1997, 1999, Piervittori & al. 2004).
Description: Thallus crustose, episubstratic, rimose-areolate to warted, brown-black to black, forming large patches, rarely delimited by a thin, black prothallus. Areoles mostly contiguous, irregular in shape, usually convex, with a folded- uneven surface, epruinose, more or less glossy. Cortex with a brown upper layer overlain by an epinecral layer; medulla white or pale yellowish, I-. Apothecia lecanorine, usually not very abundant, at first immersed to adnate, later sessile, round or weakly angular by mutual compression, mostly up to 1 mm across, with a dark brown, slightly concave to convex, glossy and epruinose disc, and a thick, entire to crenulate, usually persistent thalline margin. Thalline exciple corticate, with fine granules soluble in K; proper exciple poorly delimited, brown in outer part, colourless within, forming a cupular layer below the hypothecium; epithecium olive-brown to yellowish brown, without granules; hymenium colourless, 40-60 µm high; paraphyses coherent, branched in upper part, rarely anastomosing, 3-4 µm thick in lower part, the apical cells 4-6 µm wide, with pale brown walls and a dark brown cap; hypothecium colourless or pale yellow. Asci 8-spored, clavate, approaching the Lecanora-type, with a well-developed amyloid tholus and a distinct, non-amyloid axial mass. Ascospores 1-celled, hyaline, narrowly ellipsoid to subcylindrical, with rounded apices, 10-14 x 3.5-5 µm. Pycnidia immersed, black around the ostiole. Conidia straight, acicular. Photobiont chlorococcoid. Spot tests (better visible on microscopic sections): medulla K- or K+ pale yellow, C-, KC+ fleeting pink to red-violet, P-, usually UV+ white. Chemistry: lobaric acid.
Note: on hard siliceous rocks in exposed situations, with optimum above treeline in rainy-humid areas; probably ranging throughout the siliceous Alps.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Commonnes-rarity: (info)

Alpine belt: rare
Subalpine belt: very rare
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model
Herbarium samples
Index Fungorum GBIF


P.L. Nimis CC BY-SA 4.0
TSB 18207



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (18207)
2001/11/29


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Protoparmelia_memnonia.htm
France, sur rocher siliceux - session AFL 2005 - Lozère


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_2/Protoparmelia_memnonia.htm
France, sur rocher siliceux - session AFL 2005 - Lozère