ITALIC 7.0

Lecidea speirodes Nyl.

Flora, 68: 44, 1885.

Synonyms: Lecidea contigua var. subcretacea Arnold; Lecidea decorosa Arnold; Lecidea subcretacea (Arnold) P. Syd.; Lecidea subumbonata sensu Arnold et Lettau non Nyl.

Distribution: N - TAA (Hertel & Schuhwerk 2010, Nascimbene & al. 2022), Piem (TSB 33167), VA (Piervittori & Isocrono 1999), Lig. C - Abr (Nimis & Tretiach 1999, Gheza & al. 2021).

Description: Thallus crustose, episubstratic, continuous or rimose, chalky white, often with a bluish tinge, 0.2-1.2 mm thick, most often without a clear prothallus, rarely with a thin dark prothallus. Medulla white, I+ deep blue. Apothecia lecideine, black, epruinose, (0.2-)0.4-2(-3) mm across, with a flat to finally strongly convex disc and a persistent, raised, wavy proper margin. Proper exciple green-black to brown-black along the thin outer rim, colourless or pale grey within, C+ orange-red; epithecium green-black, K-, hymenium bright blue green, rarely brownish or colourless, 50-70 µm high; paraphyses coherent, simple or forked in upper part, c. 2 µm thick at mid-level, the apical cells hardly swollen, to 2.6 µm wide; hypothecium dark brown, K-. Asci 8-spored, clavate, Lecidea-type. Ascospores 1-celled, hyaline, ellipsoid, 6-12 x 3.5-6.5 µm, not halonate, thin-walled and pseudodiblastic. Pycnidia black, globose, immersed. Conidia bacilliform, 5-15 x 0.8-1.5 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-. Chemistry: thallus without lichen substances.

Note: a lichen known from the central and southern European mountains (Alps, Pyrenees, Cordillera Cantabrica in Spain, Tatra Mountains), found on steeply inclined, superficially decalcified calciferous rocks or on lime-containing siliceous rocks, with optimum in upland areas, up to the nival belt in the Alps. The world distribution was mapped by Hertel (2006). The record from Abruzzo (Gran Sasso) is the southernmost in Europe.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rather rare

Subalpine belt: 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:

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

P.L. Nimis CC BY-SA 4.0

TSB 30296

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

Herbarium: TSB (30296)
2003/03/12
young apothecium

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

Herbarium: TSB (30296)
2003/03/12

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_4/Lecidea_speirodes.htm

France, Col de l'Iseran, lac de Cema, 2760 m - Savoie
3/9/2014

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_4/Lecidea_speirodes.htm

France, Col de l'Iseran, lac de Cema, 2760 m - Savoie
3/9/2014

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_4/Lecidea_speirodes.htm

France, Col de l'Iseran, lac de Cema, 2760 m - Savoie
3/9/2014

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_4/Lecidea_speirodes.htm

France, Col de l'Iseran, lac de Cema, 2760 m - Savoie
3/9/2014