ITALIC 7.0

Staurothele guestphalica (Körb.) Arnold

Flora, 68: 154, 1885. Basionym: Polyblastia guestphalica J. Lahm ex Körb. - Parerga Lichenol.: 339, 1863.

Synonyms: Porphyriospora guestphalica (Körb.) Servít; Staurothele dalmatica Servít; Staurothele orbicularis auct. p.p. non (A. Massal.) Th. Fr.

Distribution: N - VG (TSB 3278), Lig (Giordani & al. 2016).

Description: Thallus crustose, endosubstratic, pale grey, adjacent thalli often separated by dark lines. Perithecia black, 0.25-0.4 mm across, immersed in pits in the rock, without involucrellum. Exciple brown-black throughout; hymenial gel I+ blue, K/I+ blue; hymenial algae 3-6 x 3-5 μm, isodiametrical to shortly oblong, 1-1.5 times as long as wide; hamathecium of periphyses and periphysoids, interascal filaments absent. Asci 1(-2)-spored, clavate, the wall thickened above, with an ocular chamber, after dehiscence with a delicate extruded endotunica, I-, K/I-. Ascospores muriform, long remaining colourless, finally pale brown or pale pinkish brown, ellipsoid to narrowly ellipsoid, often narrowing at one end, (45-)55-88 x 15-28 μm (somewhat smaller when 2 per ascus). Pycnidia black, immersed in the thallus. Conidia hyaline, rod-shaped. Photobiont chlorococcoid (Stichococcus), present in both thallus and hymenium. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on calcareous boulders near the ground, and on large pebbles in dry grasslands; related to S. orbicularis, and in need of further study.

Growth form: Crustose endolithic

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: extremely rare

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: extremely rare

Padanian area: extremely rare

Humid submediterranean belt: very rare

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

P.L. Nimis CC BY-SA 04

TSB 3278

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