ITALIC 8.0

Carbonea assimilis (Körb.) Hafellner & Hertel

in Wirth, Flechten Baden-Württembergs: 511, 1987. Basionym: Lecidella assimilis Hampe ex Körb. - Parerga Lichenol.: 202, 1861.

Synonyms: Lecidea assimilis (Körb.) Th. Fr.

Distribution: C - Sar.

Description: Thallus crustose, areolate, pale to dark brown, usually slightly glossy, sometimes starting the life-cycle on other crustose lichens, the areoles contiguous, 0.3-1.6 mm wide, strongly convex to almost bullate. Medulla white, I-. Apothecia lecideine, epruinose, glossy black, scattered or clustered in small groups, mostly marginal on the areoles, sessile and constricted at base, round to angular by mutual pressure, 0.2-0.6(-0.8) mm across, with a concave to slightly convex disc and a thin, flexuous, prominent proper margin. Proper exciple dark brown or black in central part, green-black or olive in marginal part; epithecium bright blue-green, N+ purple-red; hymenium colourless to greenish in upper part, 45-65 µm high; paraphyses coherent, simple, frequently anastomosing, 1-2 µm thick at mid-level, the apical cells swollen, up to 2.5 µm wide; hypothecium colourless, 50-150 µm high. Asci 8-spored, very thin-walled, with a tall apical dome, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid to ovoid, (8-)10-15 x 5-8(-9.5) µm, usually >1.5 times as long as wide. Photobiont chlorococcoid. Spot tests: Thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a species with a thallus of minute pale brown glossy areoles which are diagnostic, found on exposed inclined rock faces of siliceous rocks. Purported to start the life-cycle on other crustose lichens (e.g. species of Aspicilia, Lecanora, Lecidea), but according to Hafellner (2021) probably non-lichenicolous. Perhaps more widespread but not common, perhaps overlooked in Italy.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

paras crustose lichens

Commonnes-rarity: (info)

Alpine belt: very rare

Subalpine belt: very rare

Oromediterranean belt: very rare

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

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5

(info)

Solar irradiation:

1

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5

(info)

Aridity:

1

2

3

4

5

(info)

Eutrophication:

1

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4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

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6

(info)

Predictive model

Index Fungorum GBIF

Jason Hollinger - CC0 1.0 (Public-domain) – Source: Source: https://lichenportal.org/cnalh/collections/individual/index.php?occid=3764279

United States, Nevada, White Pine County, Great Basin National Park, Mount Wheeler, on broad ridge ca. 0.1 mi. NW of western peak