ITALIC 7.0

Protomicarea alpestris (Sommerf.) McCune

in McCune & al., Mycosphere, 9, 4: 868, 2018 . Basionym: Lecidea alpestris Sommerf. - K. Norske Vidensk. Skrifter, 2, 2: 54, 1825.

Synonyms: Lecidea alpestris Sommerf.; Lecidea stenotera (Nyl.) Nyl.

Distribution: N - Frl, Ven, TAA (Nascimbene & al. 2022), Lomb, Piem (Isocrono & al. 2004).

Description: Thallus crustose, episubstratic, whitish to ash-grey, areolate or granulose-verrucose, with convex, to 1 mm wide areoles. Apothecia biatorine, black, adnate to sessile, often confluent, 0.4-1(-1.5) mm across (to 2.5 mm when apothecia confluent), with a soon convex, pruinose disc, and an indistinct, soon excluded proper margin. Proper exciple thin, blue-green, of radiating hyphae, K-; epithecium bright blue-green, K-; hymenium colourless to weakly blue-green in upper part, 50-100 µm high, K-; paraphyses coherent, not thickened at apex; hypothecium thin, brown-orange and K+ purple-red in lower part. 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 (rarely a few 1-septate), hyaline, narrowly ellipsoid, 13-21(-25) x 2.5-4 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a circumpolar, arctic-alpine lichen found on naked soil, mosses and plant debris over siliceous substrata, more rarely on bark, on basal parts of conifers in the subalpine belt.

Growth form: Crustose

Substrata: soil, terricolous mosses, and plant debris

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rather rare

Subalpine belt: 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

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

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (28940)
2001/12/12

Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php . Courtesy: Anita Stridvall