ITALIC 7.0

Sagedia nunatakkorum (Poelt) S.Y. Kondr.

in Kondratyuk & al., Acta Bot. Hung. 58, 3-4: 383, 2016.. Basionym: Lecanora nunatakkorum Poelt - Mitt. bot. Statssamml. München, 8: 325, 1953.

Synonyms: Aspicilia mastrucata (Wahlenb.) Th. Fr. f. pseudoradiata Arnold; Aspicilia nunatakkorum (Poelt) Poelt ex Hafellner & Türk

Distribution: N - TAA (Dalla Torre & Sarnthein 1902).

Description: Thallus crustose to subfruticose, well-delimited by a black prothallus, dark grey with brown patches, areolate, the areoles giving rise to elongate, simple or irregularly branched 0.2-0.3 mm thick, up to 2 mm tall, isidia-like papillae with an often darker or white-floccose apex. Cortex paraplectenchymatous, 25-30 µm thick; medulla white, paraplectenchymatous, devoid of crystals, I-. Apothecia rare, sparse, solitary, lecanorine-aspicilioid, sessile to shortly stalked, up to 1 mm across, with a black, epruinose, flat disc and a rather thick, raised, grey-black thalline margin. Proper exciple well-developed, of parallel hyphae, extending below the hymenium; epithecium olive-green; hymenium colourless, c, 130 µm high, I+ yellowish; paraphyses coherent, branched in upper part, 1.5-2 µm thick, submoniliform in upper part, the apical cells up to 4 µm wide; hypothecium colourless. Asci 8-spored, the thin outer coat K/I+ blue, the wall and apical dome K/I-. Ascospores 1-celled, hyaline, ellipsoid, 22-27 x 15-18 µm. Pycnidia unknown. Photobiont chlorococcoid. Spot tests: thallus partly K-, partly reacting K+ red (in the brown parts), C-, KC-, P- or P+ yellow (in the brown parts). Chemistry: unknown, probably with norstictic acid.

Note: on exposed siliceous rocks at high altitudes; reported from the Eastern Alps (Austria) where it is not uncommon in the nival belt; probably overlooked elsewhere in the Alps, being often sterile.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly asexual, by isidia, or isidia-like structures (e.g. schizidia)

Commonnes-rarity: (info)

Alpine belt: very rare

Subalpine belt: very 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