ITALIC 7.0

Gyalolechia pruinosa Körb.

Ver. zool.-bot. Ges. Wien, 17: 703, 1867.

Synonyms: Caloplaca aurea f. rupicola (Arnold) Zahlbr.; Caloplaca pruinosa (Körb.) Zahlbr.; Candelariopsis pruinosa (Körb.) Szatala; Fulgensia pruinosa (Körb.) Poelt; Fulgensia pruinosa var. fissiseda Poelt

Distribution: N - TAA, Lomb. C - Abr.

Description: Thallus crustose-placodioid, episubstratic, whitish yellow to orange-yellow, pruinose in central parts, forming 1-2 cm wide rosettes. Areoles 1-2(-3) mm broad, flattened, contiguous, the marginal ones distinctly elongate, anchored to thin layers of soil in rock fissures by rhizine-like bundles of hyphae. Apothecia frequent, numerous, zeorine, rounded, sessile, 0.5-1(-2) mm across, with a reddish orange to brownish orange, flat, rugose disc and a thin, orange-yellow, pruinose margin. Epithecium brownish orange, K+ red; hymenium colourless, 70-80 μm high; hypothecium colourless. Asci 8-spored, clavate, functionally unitunicate, apically thickened with a broad internal beak, the inner part of apex and external cap I+ blue, Teloschistes-type. Ascospores 1-septate, hyaline, fusiform, thin-walled, 18-27(-30) x 5-8 μm, often slightly constricted at septum. Pycnidia orange-yellow, immersed. Conidia narrowly ellipsoid. Photobiont chlorococcoid. Spot tests: thallus and apothecia K+ red, C-, KC-, P-, UV+ pale orange. Chemistry: fragilin dominant, with smaller amounts of emodin and parietin.

Note: on steeply inclined to rain-sheltered surfaces of calcareous rocks, mostly in fissures, sometimes on epilithic bryophytes, with optimum above treeline; var. fissiseda Poelt grows on the top of birds' perching boulders.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

In underhangs rarely wetted by rain

Commonnes-rarity: (info)

Alpine belt: 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

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

Herbarium: GZU Herb.Mayrhofer (12828)
2003/04/28

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

Herbarium: GZU Herb.Mayrhofer (12828)
2003/04/28