ITALIC 8.0

Lecanora allophana f. sorediata Vain.

Meddeland. Soc. Fauna Fl. Fenn., 3: 103, 1878.

Synonyms:

Distribution: N - Frl, Emil (Fariselli & al. 2020). C - Marc (Nimis & Tretiach 1999).

Description: Thallus crustose, smooth to verrucose, rather thick, usually white, sorediate. Soralia strongly convex, hemispherical, usually discrete, white, greyish white or yellowish white, with finely granulose soredia. Apothecia lecanorine, often occurring together with the soralia, (0.6-)1-2.5(-3) mm across, strongly constricted at base, with a reddish brown to orange-brown, usually glossy, concave to finally slightly convex disc, and a thick, raised, often flexuose and crenulate thalline margin. Thalline exciple distinctly corticate, the cortex 30-40 µm thick laterally, 50-75(-90) µm thick at base, not sharply delimited from the medullary part which is filled with with abundant, small crystals insoluble in K (the crystals reaching the cortex); epithecium orange to orange-brown, the pigment not dissolving in K, without crystals; hymenium colourless; paraphyses slightly thickened at tips to capitate; hypothecium colourless, not inspersed with oil droplets. Asci 8-spored, clavate, 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, hyaline, ellipsoid, (10-)13-19(-21) x (6-)7-10(-11) µm, the wall >1 µm thick. Photobiont chlorococcoid. Spot tests: thallus K+ yellow, C-, KC-, P- or P+ pale yellow. Chemistry: atranorin (major), and unknown terpenoids.

Note: this taxon was sometimes considered as a synonym of L. impudens. According to Lendemer & al. (2013) the two taxa, although similar in general appearance, have a different chemistry; in my opinion, ths is just a sorediate form of L. allophana. This morph is included in the Italian red list of epiphytic lichens as “Data Deficient” (Nascimbene & al. 2013c).

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: very rare

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 24112

Curtis Randall Björk – CC BY-SA 4.0

British Columbia, urban Prince George, Cottonwood Park Date: 2012-05-00 Trunk Populus balsamifera in oldgrowth riparian forest, in intensely air-polluted site

P.L. Nimis CC BY-SA 04

TSB 24112

P.L. Nimis CC BY-SA 04

TSB 24112