ITALIC 8.0

Lecidea haerjedalica H. Magn.

Bot. Not.: 403-404, 1948.

Synonyms:

Distribution: N - TAA, Lig.

Description: Thallus crustose, endosubstratic and poorly evident or (rarely) thinly episubstratic and indistinctly areolate, whitish grey, without a distinct prothallus. Medullary hyphae I+ blue-violet. Apothecia lecideine, black, sessile, rounded or irregular in outline due to mutual compression, 0.2-0.8(-1.3) mm across, with a mostly flat, rough disc, and a thick, raised, persistent proper margin. Proper exciple brown-black with a violet tinge in outer part, paler within, the cortical part 25-45 µm wide laterally, C-, I+ violet; epithecium green-black, irregularly thick, coarsely granulose; hymenium pale brown to pinkish brown, 40-70 µm high, the reddish violet tinge intensifying in K; paraphyses coherent; hypothecium thin, pale violet brown, the hyphal walls with a pale purplish-brown pigment which reacts K+ intensifying purplish. Asci 8-spored, narrowly clavate, thick-walled, with a K/I+ pale blue tholus and a strongly amyloid, thin apical cushion, surrounded by a I+ blue outer layer, Lecidea-type. Ascospores 1-celled, hyaline, broadly ellipsoid, 8.5-11(-13) x 4.8-5.6 µm, 1.5-2.2 times as long as wide. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: thallus without lichen substances.

Note: an arctic-alpine silicicolous species of wind-exposed, snow-free sites, most frequent on crystalline schists near or above treeline. The world distribution was mapped by Hertel (2006).

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: very 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

Index Fungorum GBIF

Einar Timdal http://nhm2.uio.no/lav/web/index.html - CC BY-NC

Einar Timdal - Source: http://nhm2.uio.no/lav/web/index.html - CC BY-NC