ITALIC 8.0

Protoparmeliopsis laatokkensis (Räsänen) Moberg & R. Sant.

in Santesson & al., Lichen-forming and lichenicolous fungi of Fennoscandia: 269, 2004. Basionym: Parmularia laatokkensis Räsänen - Ann. Bot. Soc. Zool.-Bot. Fenn. Vanamo, 12, 1: 63, 1939.

Synonyms: Aspicilia dvorakii Suza nom. nud.; Lecanora dvorakii (Suza) Motyka nom. inval.; Lecanora laatokkensis (Räsänen) Poelt

Distribution: N - TAA (Ryan & Nash 1993), Lomb (Valcuvia & Delucchi 2001), Emil (Lichenoth. Graec. 146, Fariselli & al. 2020), Lig (Ryan & Nash 1993). C - Sar (Rizzi & al. 2011, Giordani & al. 2013). S - Cal (Puntillo 1996), Si.

Description: Thallus crustose, episubstratic, yellowish green, sometimes with a brownish hue, rimose-areolate, 0.3-0.5 mm thick, forming 1-3 cm wide patches, often delimited by a dark prothallus, the areoles often black at margins, more or less flat, smooth, 0.5-1.5(-2.5) mm wide, developing on a dark hypothallus, the peripheral ones sometimes slightly elongate, but not forming a clearly placodioid thallus. Cortex poorly developed, brownish in upper part, 50-75 µm thick, inspersed with yellowish granules soluble in K; medulla white, filled with medium-fine granules insoluble in K, I-; lower cortex absent. Apothecia lecanorine, abundant, 1-3 in the center of the areoles, 0.3-0.7(-1.5) mm across, often irregular in outline, long remaining semi-immersed in the areoles, finally broadly sessile, with a reddish brown to dark brown, mostly flat disc and an entire, often wavy, persistent thalline margin. Thalline exciple corticate, paraplectenchymatous; proper exciple prosoplectenchymatous, c. 30 µm wide; epithecium brown to olive-brown, inspersed with brown granules soluble in K, 10-15 µm high; hymenium colourless, 60-80 µm high, I+ blue; paraphyses coherent, mainly simple or sparingly branched in upper part, the apical cells not strongly swollen, 2.5-3 µm wide; hypothecium colourless, 150-300 µm thick in central part. Asci 8-spored, elongate-clavate, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, 9-15 x 4.5-7.5 µm. Pycnidia rare. Conidia thread-like, 25-30 µm long. Photobiont chlorococcoid. Spot tests: thallus K- or K+ pale yellow, C-, KC+ yellow, P-. Chemistry: usnic acid in cortex, plus zeorin, and usually unknown triterpenoids, sometimes with traces of fatty acids.

Note: on schist, serpentine, amphibolite, mostly on horizontal faces near the ground, at least when young, parasitic on other crustose lichens. The record from Emilia refers to Lecanora (Aspicilia) dvorakii Suza nom. nud.: an isotype of this species was annotated by Vězda, stating that it beloings to P. laatokkensis.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

paras crustose lichens when young

Commonnes-rarity: (info)

Alpine belt: extremely rare

Subalpine belt: very rare

Oromediterranean belt: rare

Montane belt: rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: very rare

Humid mediterranean belt: absent

Dry mediterranean belt: absent

pH of the substrata:

1

2

3

4

5

(info)

Solar irradiation:

1

2

3

4

5

(info)

Aridity:

1

2

3

4

5

(info)

Eutrophication:

1

2

3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

2

3

4

5

6

(info)

Predictive model

Herbarium samples

INDEX FUNGORUM GBIF DOLICHENS

Harrie Sipman – Source http://www.bgbm.fu-berlin.de/sipman/Zschackia/AegeanLichens/CaloplacaAC.htm - As Caloplaca oasis

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (6254)
2001/11/25

Harrie Sipman – Source http://www.bgbm.fu-berlin.de/sipman/Zschackia/AegeanLichens/CaloplacaAC.htm - As Caloplaca oasis

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_3/Protoparmeliopsis_laatokkaensis.htm

France, ession AFL 2014 - Alpes-de-Haute-Provence

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_3/Protoparmeliopsis_laatokkaensis.htm

France, ession AFL 2014 - Alpes-de-Haute-Provence

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_3/Protoparmeliopsis_laatokkaensis.htm

France, ession AFL 2014 - Alpes-de-Haute-Provence