ITALIC 8.0

Lecanora subsaligna M. Brand & van den Boom

in van den Boom & Brand, Lichenologist, 40: 477, 2008.

Synonyms:

Distribution: N - Lig (van den Boom & Brand 2008).

Description: Thallus crustose, endosubstratic or thinly episubstratic, continuous, smooth to slightly warted, pale grey, whitish, yellowish grey to pale grey-orange, forming small patches, often inconspicuous. Upper cortex absent, epinecral layer present, filled with 0.2-3 µm wide, coarse granules; algal cells occupying the whole thallus thickness. Apothecia lecanorine, round to rarely angular, adpressed to sessile, slightly constricted at base, (0.2-)0.4-0.7 mm across, with a pale beige to orange-brown, rarely finally darkened, epruinose, flat to slightly convex disc, and an initially weakly prominent, later level with disc, persistent to rarely finally excluded thalline margin. Thalline exciple corticate only in lower part, laterally 20-30 µm wide, filled with brownish crystals; proper exciple poorly developed, to 10 µm wide at base, to 25 µm wide laterally, with granules; epithecium yellowish brown to brown, filled with fine granules soluble in K, N+ reddish violet; hymenium colourless, 35-55 µm high; paraphyses coherent, simple or sparingly branched and anastomosing, 1-2 µm thick, the apical cells only slightly swollen, to 5 µm wide; hypothecium colourless, up to 80 µm high. Asci 8-spored, clavate to pyriform, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a blue outer layer, Lecanora-type. Ascospores 1-celled to rarely 1-septate, hyaline, ellipsoid to oblong, 8.5-11.5 x 3-4 µm. Pycnidia semi-immersed, brown to colourless in upper part. Conidia of three types: a) 1(-3)-septate, falcate, attenuated at tips (10-)22-27(-30) x 1.7-2 µm macroconidia (not common); b) 1-celled and slightly curved, 8-10 x c. 1 µm microconidia (rare); c) curved 13-22 x 0.8-1(-2) µm leptoconidia (not rare). Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: isousnic acid (major), 7-O-methylnorascomatic acid (traces).

Note: a recently-described, lignicolous and corticolous species with a mainly western distribution in Europe (the Italian record is the easternmost one), occurring as a pioneer in species-poor stands. It is closely related to L. albellula and easily confused with Polyozosia hagenii.

Growth form: Crustose

Substrata: bark and lignum

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: extremely rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: extremely 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

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4

5

6

(info)

Predictive model

Index Fungorum GBIF