Calvitimela armeniaca (DC.) Hafellner

in Hafellner & Türk, Stapfia, 76: 151, 2001. Basionym: Rhizocarpon armeniacum DC. in Lamarck & de Candolle - Fl. Franç., éd. 3, 2: 367, 1805.
Synonyms: Lecidea aglaeotera Nyl.; Lecidea armeniaca (DC.) Fr.; Lecidea armeniaca f. aglaeoides Nyl.; Lecidea nigrita Schaer.; Lecidea spectabilis Flörke; Lecidella armeniaca (DC.) Bagl.; Lecidella spectabilis (Flörke) Körb.; Oedemocarpus armeniacus (DC.) Trevis.; Psora armeniaca (DC.) A. Massal.; Psora spectabilis (Flörke) Anzi; Psora spectabilis var. armeniaca (DC.) Anzi; Psora spectabilis var. lutescens Anzi; Psora viridiatra (Wulfen) Anzi; Tephromela armeniaca (DC.) Hertel & Rambold
Distribution: N - Frl (Tretiach & Hafellner 2000), Ven (Hertel & Schuhwerk 2010), TAA (Grube & al. 2004, Hertel & Schuhwerk 2010), Lomb (Dalle Vedove & al. 2004), Piem (Isocrono & al. 2004, Watson 2014), VA (Piervittori & al. 1998, 2001, Piervittori & Isocrono 1999, Hertel & Schuhwerk 2010), Emil (Tretiach & al. 2008, Fariselli & al. 2020), Lig. C - Tosc, Sar.
Description: Thallus crustose, episubstratic, areolate to areolate-verrucose, yellowish, brownish yellow to orange-brown, often glossy, of 0.5-4 mm wide, contiguous and convex areoles developing on a black hypothallus, forming patches to 10 cm in diam., often delimited by a black prothallus. Cortex pale grey in upper part, 40-60 µm thick, with a 15-40 µm thick epinecral later; medulla white, I-. Apothecia biatorine, black, 0.5-3(-4) mm across, with an initially flat, then irregularly convex, epruinose disc, without a distinct proper margin. Proper exciple strongly reduced; epithecium bluish green-black, sometimes in part brown, N+ violet; hymenium colourless, 40-50 µm high; paraphyses coherent, strongly swollen in water, 4-5.5 µm thick at base, the apical cells 5-8 µm wide; hypothecium colourless in upper part, pale yellow-brown in lower part. Asci 8-spored, clavate, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, 7-12(-15) x 3-5(-6) µm. Pycnidia dark brown, immersed. Conidia filiform, 6.5-10 x 1.5-1.8 µm. Photobiont chlorococcoid. Spot tests: cortex: K+ yellow or orange-red, C-, KC+ red, P- or P+ yellow; medulla K-, C-, KC+ red, P+ orange. Chemistry: medulla with alectorialic acid (major), alectorialin, barbatolic, roccellic and protocetraric acids (all accessory).
Note: an arctic-alpine, circumpolar species found on hard siliceous rocks in wind-exposed situations, most common in the Alps, much rarer in the mountains of southern Italy; when young, it is a facultative parasite of Sporastatia testudinea. A dubious record from Campania reported by Nimis (1993: 682) and by Ricciardi & al. (2000) is not accepted here. Calvitimela melaleuca (Sommerf.) R. Sant. is considered as an independent species by some authors: it was reported from the Alps by Jatta (1909-1911) without indication of locality, and is also known from the Alps of Switzerland and France.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: common
Subalpine belt: very rare
Oromediterranean belt: extremely rare
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:

(info)

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Solar irradiation:

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Aridity:

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5

Eutrophication:

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Poleotolerance:

(info)

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Altitudinal distribution:

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Leif Stridvall http://www.stridvall.se/lichens/gallery/ Courtesy: Anita Stridvall


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34344)
2002/01/07
a young thallus on the right, growing on Sporastatia testudinea on the left


Helena Rodriguez
Spain, Galicia, Peña Trevinca
06.2019


Helena Rodriguez
Spain, Galicia, Peña Trevinca
06.2019


Helena Rodriguez
Spain, Galicia, Peña Trevinca
06.2019



Pier Luigi Nimis - CC BY-SA 4.0
TSB 36893



Pier Luigi Nimis - CC BY-SA 4.0
TSB 36893



Pier Luigi Nimis - CC BY-SA 4.0
TSB 36893



Pier Luigi Nimis - CC BY-SA 4.0
TSB 41544



P. L. Nimis CC BY-SA 4.0
TSB 36893



P. L. Nimis CC BY-SA 4.0
TSB 38599



P. L. Nimis CC BY-SA 4.0
TSB 38492


Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43959



Pier Luigi Nimis - CC BY-SA 4.0
TSB 43959