Lecidea gypsicola Llimona

in Vězda, Lich. Sel. Exs.i, 47: 3 (no. 1160), 1973
Synonyms:
Distribution:
Description: Thallus crustose, areolate, the areoles very thick, flat to slightly convex, white, sometimes with a light brownish hue when dry, pale bluish grey when wet, dull. Cortex rather thick; medulla white, I-. Apothecia lecideine, black, slightly constricted at base, (0.7-)1-2 mm across, with a black, usually faintly pruinose, initially flat but soon turning convex disc and a thin, sometimes finally excluded proper margin. Proper exciple blackish brown in outer part, almost colourless within, with many crystals, C+ red; epithecium olive-green to olive-brown; hymenium colourless; paraphyses simple to branched and anastomosing, 1.5-2 µm thick at mid-level, gradually expanded upwards, the apical cells 3-5 µm wide; hypothecium dark brown to almost black. Asci 8-spored, narrowly clavate, thick-walled, with a K/I+ pale blue tholus and a strongly amyloid, thin apical cushion, surrounded by a I+ blue outer layer, Lecidea-type. Ascospores 1-celled, hyaline, ellipsoid to narrowly ellipsoid, (12.5-)15-18 x (4.5-)5-6(-6.5) | µm, c. 2.9 times as long as wide. Photobiont chlorococcoid. Spot tests; thallus K-, C+ red, KC+ red, P-, UV-. Chemistry: gyrophoric acid and variable amounts of lecanoric acid.
Note: a species belonging to the critical L. fuscoatra-complex. It is known from several localities in Spain, where it invariably grows on gypsum, and from the Irano-Turanian region, where it occurs on calciferous rocks. To be looked for in the gypsum outcrops of Southern Italy, especially in Sicily.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

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Predictive model

Detail from: https://gzu.jacq.org/GZU000291948
GZU000291948 - Collector Llimona,X. Vězda, A.: Lichenes Selecti Exsiccati 1160 Date 1972-09-24 Location Spain / Navarra Label Hispania. Las Bardenas. Caparroso ; Alt. 400 m Habitat Ad gypsum compactum locis septentr. vel occident. spectantibus, 30° – 60° inclinatis. ISOTYPE


Detail from: https://gzu.jacq.org/GZU000340614
GZU000340614 - Lichenes Selecti Exsiccati, Editi ab Instituto Botanico Academiae Scientiarum Cechoslovacae, Pruhonice prope Pragam 47: 3 (1973) Typified by: X. Llimona 1973 Collector Llimona,X. H. Hertel: Lecideaceae exsiccatae 45 Date 1972-09-24 Label [Navarra.] Prov. Pamplona: Las Bárdenas. Nahe Caparosso ; Alt. 400 m Habitat Auf festem Gipsboden. Expos. 30-60° NW. Sehr häufig im Aspicilio-Lecideetum gypsicolum.



Felix Schumm - CC BY-SA 4.0
[VZR472], Insulae Canarienses, Gran Canaria, supra urbem Fataga, 800 m. In abrupto, ad terram in rupibus. Leg. A. Vezda, 7.2.1993, det. H. Hertel. EX A. VEZDA: LICHENES RARIORES EXSICCATI NR. 472. - Annot. von H. Hertel: Hymenium 60-65-77 μm hoch. Ascosporen 9.5-12.1-15 x 4.5-5.3-6.5 μm, Thallus und Excipulum C+ rot /(yrophorsäure), Medulla J-. Hypothecium schwarzbraun. Die Art steht der Lecidea fuscoatra sehr nahe.



Felix Schumm - CC BY-SA 4.0
[VZR472], Insulae Canarienses, Gran Canaria, supra urbem Fataga, 800 m. In abrupto, ad terram in rupibus. Leg. A. Vezda, 7.2.1993, det. H. Hertel. EX A. VEZDA: LICHENES RARIORES EXSICCATI NR. 472. - Annot. von H. Hertel: Hymenium 60-65-77 μm hoch. Ascosporen 9.5-12.1-15 x 4.5-5.3-6.5 μm, Thallus und Excipulum C+ rot /(yrophorsäure), Medulla J-. Hypothecium schwarzbraun. Die Art steht der Lecidea fuscoatra sehr nahe.