ITALIC 7.0

Gyalidea lecideopsis var. convarians (Nyl.) Vězda

Folia Geobot. Phytotaxon., 1: 320, 1966. Basionym: Gyalecta convarians Nyl. - Flora, 68: 602, 1885.

Synonyms: Gyalidea lecideopsis var. eucarpa (Servít) Vězda; Lopadium cacuminum H.Magn.

Distribution: N - TAA.

Description: Thallus crustose, endosubstratic or thinly episubstratic, often inconspicuous and poorly evident, smooth or finely granulose, grey-white to yellowish grey. Apothecia 0.4-0,6 mm across, with a concave, black to dark brown disc, and a smooth or radially split, mostly black to brown proper margin (often turning pure white in dry sites). Proper exciple 50-60 µm wide laterally, dark olive-brown in outer part, colourless or paler within; epithecium dark brown to brown-black; hymenium colourless or pale yellowish brown, 100-130 µm high; paraphyses mostly simple, to 1 µm thick, not swollen at apex; hypothecium colourless or pale yellowish brown. Asci 1-6-spored, thin-walled, apically thickened, with a small ocular chamber. Ascospores muriform, hyaline, ovoid to broadly ellipsoid, often of different sizes in the same ascus, 30-60 x 12-15 µm, without a distinct perispore. Photobiont chlorococcoid, Cystococcus/Leptosira-like. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a taxon with reduced spore numbers per ascus and muriform ascospores which are longer than 30 µm, found on limestone and dolomite in moist places, mostly in upland areas; widespread in Europe and also known from Asia and Arctic North America, but much rarer than the typical variety.

Growth form: Crustose

Substrata: rocks

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

Index Fungorum GBIF

Curtis Randall Björk CC BY-SA 4.0

British Columbia, Clearwater Valley, Hemp Creek Canyonlands Date: 2012-04-02 Photographed from specimen (Björk 25738, UBC), on phyllite rock in calcareous brecchia cliff, lightly shaded

Curtis Randall Björk – CC BY-SA 4.0

British Columbia, Clearwater Valley, Hemp Creek Canyonlands Date: 2012-04-02 Photographed from specimen (Björk 25738, UBC), on phyllite rock in calcareous brecchia cliff, lightly shaded