ITALIC 8.0

Buellia atrocinerella (Nyl.) Scheid.

Lichenologist, 25: 345, 1993. Basionym: Lecanora atrocinerella Nyl. - Flora, 55: 428, 1872.

Synonyms: Rinodina atrocinerella (Nyl.) Boistel

Distribution: N - Lig (GDOR 1618). C - Tosc (Nascimbene & al. 2021), Sar (Scheidegger 1993).

Description: Thallus crustose, episubstratic, dull brownish grey, rimose to areolate, the areoles developing on a dark hypothellus, flat to slightly convex, the marginal ones slightly elongate (but thallus not placodioid). Cortex of anticlinally arranged, cellular hyphae, the terminal cells swollen, with brown caps; medulla white, I-. Apothecia lecideine, 0.2-0.3(-0.4) mm across, at first semi-immersed in the areoles, then sessile, with a black disc and a narrow, brown proper margin. Proper exciple thin, Aethalea-type, the inner hyphae hyaline, prosoplectenchymatous, the outer hyphae parallel and usually strongly brown-pigmented, N-; epithecium brown, N-; hymenium colourless, without oil droplets, c. 75 µm high; hypothecium dark brown. Asci 8-spored, clavate, the apical dome K/I+ dark blue with a pale, conical-pointed apical cushion (axial mass), the wall I-, but the thin outer gel I+ blue, Bacidia-type. Ascospores 1-septate, not constricted at septum, brown, oblong, 10-12 x 7-8 µm, Buellia-type, with a smooth wall. Photobiont chlorococcoid. Spot tests: thallus K+ yellow turning red, C-, KC-, P+ yellow-orange. Chemistry; norstictic and connorstictic acids.

Note: a Mediterranean species of hard siliceous rocks in warm-dry habitats, sometimes growing on other crustose lichens.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

paras crustose lichens

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: absent

Dry mediterranean belt: very rare

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

S. Poumarat - Source: http://mycologie.catalogne.free.fr/lichens.htm