ITALIC 7.0

Calicium montanum Tibell

Mycotaxon, 70: 432, 1999.

Synonyms:

Distribution: C - Tosc (Tibell 1999, Puntillo & Puntillo 2009).

Description: Thallus crustose, episubstratic, granular to verrucose, pale grey to grey-green. Apothecia stalked, pin-like, 0.3-0.4 mm high, black, white-pruinose on the outer surface of the capitulum. Stalk black, epruinose, 0.11-0.2 mm thick, of dark brown, irregularly interwoven and strongly sclerotized hyphae, the outermost layer gelatinous, hyaline; capitulum obovoid to lenticular, 0.2-0.3 mm across, with a dark brown to aeruginose-green exciple of almost isodiametric, sclerotized cells; hypothecium dark brown, flat to slightly convex. Asci cylindrical-clavate, formed singly, dissolving early, with uniseriately arranged spores. Ascospores 1-septate, brown, ellipsoid, 9-11.5 x 5-6 µm, with coarse, irregular cracks. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-. Chemistry: divaricatic and 2-O-methyldivaricatic acids.

Note: a recently-described, rare but widespread species found on lignum, especially on decorticated stumps of Castanea, but also on conifers. Reported from Tuscany and perhaps more widespread in Italy. It is included in the Italian red list of epiphytic lichens as “Critically Endangered” (Nascimbene & al. 2013c).

Growth form: Crustose

Substrata: lignum

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

In underhangs rarely wetted by rain

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: very rare

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

Gregorio Aragón – Source: https://www.biodiversidadvirtual.org/hongos/Calicium-montanum-Tibell-img45672.html

Gregorio Aragón – Source: https://www.biodiversidadvirtual.org/hongos/Calicium-montanum-Tibell-img45672.html