ITALIC 8.0

Pertusaria bryontha (Ach.) Nyl.

Lichenes Scand.: 178, 1861. Basionym: Parmelia subfusca var. bryontha Ach. - Meth. Lich., 2: 167, 1803.

Synonyms: Pertusaria macrospora Hepp

Distribution: N - Frl (Tretiach & Hafellner 2000), TAA, Lomb.

Description: Thallus crustose, episubstratic, whitish to pale grey, more or less continuous to rimose, sometimes provided with sparse, isidia-like papillae. Apothecia lecanorine, immersed in thalline warts, with a 0.3-2.5 mm wide, brownish to brown-black, concave to slightly convex disc surrounded by an irregular, often flexuose, raised thalline margin. Epithecium dark brown to brown-black, K+ violet; hymenium and hypothecium colourless; paraphyses lax, branched and richly anastomosing. Asci 1-spored, broadly cylindrical, the apex with a broad ocular chamber, the outer sheath K/I+ blue, otherwise K/I-, with an inner extensible layer, Pertusaria-type. Ascospores 1-celled, hyaline, ellipsoid, 110-220 x 35-90 μm, with a 12-20 μm thick wall. Photobiont chlorococcoid. Spot tests: thallus K+ pale yellow, C+ red, KC+ red, P+ pale yellow turning orange. Chemistry: xanthones, stictic acid, gyrophoric acid and different accessory substances.

Note: an arctic-alpine, circumpolar lichen found on mosses and plant debris, mostly over calcareous substrata, with optimum near and above treeline, up to the nival belt; probably widespread throughout the Alps, where it reaches the nival 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: 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

Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/

Kammspitz; altitude: Austria
2015

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

Herbarium: GZU Herb.Poelt (119-85)
2003/04/28
young fertile warts

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

Herbarium: GZU Herb.Poelt (97-82)
2003/04/28
apothecium

Erichsen C.F.E. 1936. Pertusariaceae. - In: Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Österreich und der Schweiz. Bd. IX, Abt. 5, T. 1. Akad. Verlagsges., Leipzig, pp. 321-512, 513-728. - Public Domain

Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.

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

Herbarium: GZU Herb.Poelt (97-82)
2003/04/28
mature apothecia

Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/

Kammspitz; altitude: Austria
2015

Curtis Randall Björk CC BY-SA 4.0

GZU Herb.Poelt (97-82)