ITALIC 8.0

Adelolecia rhododendrina (Nyl.) Hafellner & Türk

Printzen ex Hafellner & Türk, Stapfia, 76: 149, 2001. Basionym: Lecidea rhododendrina Nyl. - Flora, 54: 308, 1876.

Synonyms:

Distribution: N - Frl (Hinteregger 1994, Austria, near the border).

Description: Thallus crustose, episubstratic, continuous and smooth to finely verrucose, rimose or rarely areolate. Apothecia biatorine or lecideine, 0.3-0.5 mm across, broadly sessile, round to irregular in outline, often confluent into 1-1.5 mm wide, tuberculate aggregates, with a greenish blue to blue-black, at first concave, then flat to convex disc, and an initially raised, markedly glossy, finally sometimes excluded proper margin, which, especially when wet, usually appears darker than the disc. Proper exciple colourless or paler in outer part, blackish green to blackish blue and almost carbonized within, K+ blue to green, N+ violet-red; epithecium 5-10 µm high, colourless, greenish-black or dark brown, N+ reddish; hymenium colourless to pale brown or pale green, 50-60 µm high, I+ blue turning red-brown; paraphyses strongly coherent, usually simple, the apical cells not or only slightly swollen, 2-4 µm wide; hypothecium colourless or yellowish brown, 75-100 µm high. Asci 8-spored, clavate, with a K/I+ blue apical dome penetrated by a narrow, K/I- apical cushion surrounded by a narrow, deeply K/I+ blue zone, the wall K/I- but surrounded by an I+ red-brown, K/I+ blue outer layer, the ocular chamber relatively small, Biatora-type. Ascospores 1-celled (rarely 1-septate), hyaline, narrowly ellipsoid, 10-16(-20) x 3-5 µm. Pycnidia black-brown. Conidia 1-celled, bacilliform, 4-6 µm long. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: thallus without lichen substances.

Note: on twigs of subalpine shrubs, especially Rhododendron ferrugineum. Probably more widespread in the Alps.

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: rare

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: absent

Dry mediterranean belt: absent

pH of the substrata:

1

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5

(info)

Solar irradiation:

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5

(info)

Aridity:

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5

(info)

Eutrophication:

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5

(info)

Poleotolerance:

0

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3

(info)

Altitudinal distribution:

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6

(info)

Predictive model