Psora vallesiaca (Schaer.) Timdal
Nord. J. Bot., 4: 538, 1984. Basionym: Lecidea vallesiaca Schaer. - Lich. Helv. Spicil., 12: 631, 1842.
Synonyms: Lecidea albilabra auct.; Lecidea deceptoria Nyl.; Psora albilabra auct. non (Dufour) Körb.; Psora albilabra subsp. deceptoria (Nyl.) Clauzade & Cl. Roux; Psora deceptoria (Nyl.) Flagey; Psora subdecipiens (Nyl.) Flagey; Squamaria deceptoria (Nyl.) M. Choisy & Werner
Distribution: N - Ven, Piem, VA (Piervittori & Isocrono 1999), Emil (Fariselli & al. 2020), Lig. C - Tosc (Ravera & al. 2019b), Marc (Nimis & Tretiach 1999), Umb (Genovesi & al. 2002, Ravera & al. 2006), Sar (Alonso & Egea 1994). S - Camp (Aprile & al. 2003, 2003b, Garofalo & al. 2010), Bas (Nimis & Tretiach 1999), Cal (Puntillo 1996), Si (Alonso & Egea 1994, Nimis & al. 1996b).
Description: Thallus squamulose, of medium brown (olive-green when wet), dull to glossy, rarely partly white-pruinose, (2-)3-5(-6) mm wide, concave, contiguous to dispersed, rarely slightly imbricate squamules with up-turned, mostly crenulate, prominent white margins; lower surface pale brown. Upper cortex 70-130 µm thick, of rather thin-walled hyphae with round, ellipsoid or angular lumina, sometimes containing calcium oxalate crystals; medulla containing norstictic acid and calcium oxalate crystals; lower cortex poorly developed or absent. Apothecia lecideine, sessile, mostly laminal, up to 1.5 mm across, with a black, convex disc and a thin, grey, soon excluded margin. Epithecium brownish, K+ red; hymenium colourless, I+ blue; paraphyses anastomosing, adglutinated; hypothecium pale brown. Asci 8-spored, elongate-clavate, with a thin, outer amyloid layer and a thickened tholus penetrated by a tube, the sides of which stain I/KI+ deep blue, without an ocular chamber, Porpidia-type. Ascospores 1-celled, hyaline, fusiform, thin-walled, 9-14(-17) x 5-7(-8) µm. Pycnidia dark, immersed. Conidia bacilliform, 5-7 x c. 1 µm. Photobiont chlorococcoid. Spot tests: cortex K-, C-, KC-, P-; medulla K+ yellow turning red, P- or P+ yellow. Chemistry: medulla with variable amounts of norstictic acid, epithecium with anthraquinones.Note: on bare soil and in fissures of rocks, not rare where suitable habitats are present (subcontinental conditions and base-rich, slightly calciferous siliceous substrata). The record from Venezia Giulia by Nimis (1993: 582) was due to a misidentification.
Growth form: Squamulose
Substrata: rocks, soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Subcontinental: restricted to areas with a dry-subcontinental climate (e.g. dry Alpine valleys, parts of Mediterranean Italy)
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: extremely rare
Submediterranean belt: rare
Padanian area: absent
Humid submediterranean belt: rather rare
Humid mediterranean belt: very rare
Dry mediterranean belt: very rare
Predictive model
Herbarium samples
Luca di Nuzzo
Italy, Toscana, PT, Monsummano Terme, on limestone outcrops along the path to Monsummano Alto, 127 m
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13176)
2001/11/29
Curtis Randall Björk – CC BY-SA 4.0
Murray River Canyon, British Columbia, Canada
07.2013
Luca di Nuzzo
Italy, Toscana, PT, Monsummano Terme, on limestone outcrops along the path to Monsummano Alto, 127 m
03.2019
Luca di Nuzzo
Italy, Toscana, PT, Monsummano Terme, on limestone outcrops along the path to Monsummano Alto, 127 m
03.2019
Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php
Luca di Nuzzo
Italy, Toscana, PT, Monsummano Terme, on limestone outcrops along the path to Monsummano Alto, 127 m
03.2019
Luca di Nuzzo
Italy, Toscana, PT, Monsummano Terme, on limestone outcrops along the path to Monsummano Alto, 127 m
03.2019
Growth form: Squamulose
Substrata: rocks, soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Subcontinental: restricted to areas with a dry-subcontinental climate (e.g. dry Alpine valleys, parts of Mediterranean Italy)
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: extremely rare
Submediterranean belt: rare
Padanian area: absent
Humid submediterranean belt: rather rare
Humid mediterranean belt: very rare
Dry mediterranean belt: very rare
Predictive model
| Herbarium samples |
Index Fungorum
GBIF
Luca di Nuzzo
Italy, Toscana, PT, Monsummano Terme, on limestone outcrops along the path to Monsummano Alto, 127 m
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (13176)
2001/11/29
Curtis Randall Björk – CC BY-SA 4.0
Murray River Canyon, British Columbia, Canada
07.2013
Luca di Nuzzo
Italy, Toscana, PT, Monsummano Terme, on limestone outcrops along the path to Monsummano Alto, 127 m
03.2019
Luca di Nuzzo
Italy, Toscana, PT, Monsummano Terme, on limestone outcrops along the path to Monsummano Alto, 127 m
03.2019
Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php
Luca di Nuzzo
Italy, Toscana, PT, Monsummano Terme, on limestone outcrops along the path to Monsummano Alto, 127 m
03.2019
