ITALIC 8.0

Protomicarea commaculans (Nyl.) Aptroot

in Cannon & al., Revisions of British and Irish Lichens, 28: 10, 2022. Basionym: Lecidea commaculans Nyl. - Flora, 51: 476, 1868.

Synonyms: Lecidea commaculans Nyl.; Lecidea intercalanda Arnold; Lecidea polycocca Sommerf.

Distribution: N - TAA (Nascimbene & al. 2022), Piem (Matteucci & al. 2013, Giordani & al. 2014).

Description: Thallus crustose, poorly developed and mostly endosubstratic, sometimes thinly episubstratic and of scattered, whitish grey areoles. Medullary hyphae I-. Apothecia biatorine, black, (0.2-)0.4-0.8(-1.3) mm across, not or only slightly constricted at base, often clustered, with a strongly convex disc and a very thin, soon excluded proper margin. Proper exciple poorly developed, very thin, greenish black to blue-black in outer part, more or less colourless within, of radially arranged hyphae; epithecium olive-green to greenish black; hymenium colourless to brownish or reddish, 30-60 µm high, not well delimited from the hypothecium; paraphyses branched and anastomosing in upper part, with a thick gelatinous sheath, the apical cell to 6 µm wide, with a dark cap; hypothecium reddish brown to purplish red, K+ bright purple. Asci 8-spored, clavate, with a well-developed K/I+ blue tholus containing a deeper K/I+ blue tube, without an ocular chamber, Psora-type. Ascospores 1-celled to indistinctly 1-septate, hyaline, narrowly ellipsoid to almost dumbbell-shaped, 7-10(-12) x (2-)2.5-3.5 µm. Conidia bacilliform, 6-8 µm long. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: thallus without lichen substances.

Note: an arctic-alpine species of humid siliceous rocks near and above treeline; probably more widespread in the Alps.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rare

Subalpine belt: extremely rare

Oromediterranean belt: absent

Montane belt: absent

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:

1

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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