ITALIC 8.0

Polyozosia wetmorei (Śliwa) S.Y. Kondr., Lőkös & Farkas

in Kondratyuk & al., Acta Bot. Hung., 62, 1-2: 104, 2020. Basionym: Lecanora wetmorei Sliwa in Nash & al. - Lichen Flora Gr. Sonoran Desert Reg., 2: 283, 2004.

Synonyms: Myriolecis wetmorei (Śliwa) Śliwa, Zhao Xin & Lumbsch

Distribution: N - TAA (B 60 0191821, det. H. Sipman).

Description: Thallus crustose, endosubstratic and poorly evident. Apothecia lecanorine, sessile, 0.4-1.2(-1.5) mm across, with a pale brown to black, but densely bluish-pruinose, smooth, mostly flat disc, and an entire, smooth, white-pruinose thalline margin. Thalline exciple 80-190 μm wide, corticate, the cortex 16-20 μm thick laterally and 60-100 μm thick at base, with granules insoluble in K, but soluble in N, visible under polarized light; proper exciple very thin or indistinct; epithecium yellowish or pale brown, with the same granules as the apothecial cortex and sometimes with larger granules soluble in K, but insoluble in N; hymenium colourless, 50–65 μm high; paraphyses simple or sparingly branched, slightly expanded at tips, more or less free in K; subhymenium distinct, granular; hypothecium colourless, 40-50 μm high, of adglutinated hyphae. Asci 8-spored, elongate-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 K/I+ blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid to narrowly ellipsoid, 9-13 x 4.5-6 μm. Photobiont chlorococcoid. Spot tests: thallus and apothecia K-, C-, KC-, P-, UV-. Chemistry: without lichen substances or sometimes with traces of an unknown compound.

Note: a species described from western North America, recently found also in Iran and the Caucasus. The Italian sample, identified by H. Sipman, was collected by V.J. Grummann at Karer Pass (South Tyrol), on dry twigs of Picea abies.

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: extremely rare

Oromediterranean belt: absent

Montane belt: extremely rare

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

Jason Hollinger CC0 1.0

https://lichenportal.org/cnalh/collections/individual/index.php?occid=3755469 USA, Nevada, Lincoln County, Highland Peak , Connor Spring, 37.903 -114.56 +-50m. Elevation: 2325 m (7626ft)
TSB 29900

L. Śliwa

Herbarium: Wetmore 16568, KRAM – isotype
Scale bar = 1 mm.

Jason Hollinger – CC0 1.0 (Public-domain) - Source: https://lichenportal.org/cnalh/collections/individual/index.php?occid=3755469

USA, Nevada, Lincoln County, Highland Peak , Connor Spring, 37.903 -114.56 +-50m. Elevation: 2325 m (7626ft)
TSB 29900