ITALIC 8.0

Polyblastia fuscoargillacea Anzi

Comm. Soc. Critt. Ital., 2, 1: 26, 1864.

Synonyms: Polyblastia abstrahenda Arnold?

Distribution: N - TAA, Lomb, Piem (Isocrono & al. 2004). C - Abr (Recchia & Villa 1996).

Description: Thallus crustose, episubstratic, areolate to verrucose, the areoles 0.4-0.55 mm wide, rust-brown, patchily ochraceous or rarely ash-grey. Perithecia black, 0.3-0.4 mm across, subglobose, often with a depressed ostiolar region, at maturity immersed only at the base, usually located in the centre of the areoles. Basal parts of perithecia and surroundings sometimes K+ deep red. Involucrellum well-developed, 43-53 μm thick, clearly distinct from exciple except in the ostiolar region, reaching halfway down the perithecium, adpressed or only slightly diverging in the lowermost part; exciple dark brown throughout, 18-23 μm thick, merged with the involucrellum in the ostiolar region, pseudoparenchymatous; hamathecium of periphyses and periphysoids, interascal filaments absent; periphysoids slender, branched, 31-39 μm long, c. 1.5 μm thick; hymenial gel I+ red, K/I+ blue. Asci 8-spored, clavate, K/I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum. Ascospores muriform, with 6-7 oblique transverse septa and 3-4 longitudinal septa, hyaline or rarely turning pale yellowish brown when overmature, broadly ellipsoid, 24-32 x 14-18 μm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: an early coloniser of calciferous rocks, including small pebbles on the ground, with optimum near or above treeline.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Pioneer species

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

Herbarium samples

Index Fungorum GBIF

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Polyblastia_fuscoargillacea.htm

France, 10/7/2013 - Asco - Corse

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Polyblastia_fuscoargillacea.htm

France, 10/7/2013 - Asco - Corse

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Polyblastia_fuscoargillacea.htm

France, 10/7/2013 - Asco - Corse

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_P/Text_P_4/Polyblastia_fuscoargillacea.htm

France, 10/7/2013 - Asco - Corse

P.L. Nimis CC BY-SA 04

TSB 34519

Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain