ITALIC 8.0

Gyalidea scutellaris (Bagl. & Carestia) Lettau

Feddes Rep. Beih., 69: 123, 1937. Basionym: Gyalecta scutellaris Bagl. & Carestia - Comm. Soc. Critt. Ital., 1, 5: 442, 1864.

Synonyms: Gyalecta arctica Malme; Gyalecta pseudogeoica Anzi

Distribution: N - Ven, Lomb, Piem (Isocrono & al. 2004).

Description: Thallus crustose, episubstratic, whitish to grey- or green-brown, darker when dry, thin, continuous. Apothecia lecideine, sessile, 0.5-0.8 mm across, translucent when wet, with a pale brown to brown-black (paler when wet), strongly concave disc, and a thick, rough, entire or radially sulcate, usually paler proper margin which is sometimes laterally covered with a whitish, finally excluded thalline layer. Proper exciple 40-60 µm wide laterally, pale yellowish brown to dark brown in outer part, colourless within; epithecium colourless to very pale yellowish brown; hymenium colourless, 130-140 µm high, the hymenial gel I+ yellowish to reddish brown; paraphyses mostly simple, c. 1 µm thick, not thickened at apex, immersed in abundant hyenial gel; hypothecium colourless. Asci 4-8-spored, thin-walled, apically thickened, with a small ocular chamber, K/I-. Ascospores muriform, hyaline, ovoid, with a thin halo, 28-50 x 15-25 µm. Photobiont chlorococcoid, Cystococcus/Leptosira-like. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: an arctic-alpine species found on humid, acid substrata, such as moribund bryophytes and soil rich in humus. With optimum above treeline; restricted to the Alps in Italy.

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: very rare

Subalpine belt: extremely 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 CC BY-SA 4.0

GZU Herb.Hafellner (38312)

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

Herbarium: GZU Herb.Poelt (44-87)
2003/04/28

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

Herbarium: GZU Herb.Hafellner (38312)
2003/04/28
apothecia