ITALIC 8.0

Rimularia badioatra (Kremp.) Hertel & Rambold

Bibl. Lichenol., 38: 164, 1990. Basionym: Aspicilia badioatra Kremp. - Denkschr. kgl. bayer. bot. Ges., 4, 2 Abt.: 285, 1861.

Synonyms: Aspicilia corrugatula (Arnold) Hue; Lecanora badioatra (Kremp.) Hepp; Lecanora bockii f. contracta Th. Fr.; Lecanora contracta (Th. Fr.) Zahlbr.; Lecanora corrugatula (Arnold) Nyl.; Lecanora umbriformis (Nyl.) Grummann; Lecidea badioatra (Kremp.) Arnold; Lecidea corrugatula Arnold; Lecidea illita Nyl.; Lecidea insulatula Nyl.; Lecidea umbonatula Nyl.; Lecidea umbriformis Nyl.; Mosigia illita (Nyl.) R. Sant.

Distribution: N - TAA (Nascimbene & al. 2022).

Description: Thallus crustose, episubstratic, rimose-areolate, up to 0.2 mm thick, pinkish brown to dark grey-brown, forming 1-4(-7) cm wide patches, rarely delimited by a dark prothallus. Areoles 0.2-0.5(-1) mm wide, flat to convex, irregularly angular to circular in outline, smooth to granulose. Medulla white, I-. Apothecia apparently lecanorine at least when young, sparse, immersed in the thallus, 0.2-0.4(-0.5) mm across, with a concave to flat, often umbonate, black, epruinose disc and a thin, finally sometimes excluded thalline margin. Thalline exciple rich in algae; proper exciple 30-70 µm thick, dark brown in outer part, paler brown within; epithecium brown, c. 15 µm high, N-, K-; hymenium colourless, 70-100(-110) μm high; paraphyses strongly coherent, branched and anastomosing, 1-1.5 μm thick in lower part, the apical cells up to 3 μm wide; hypothecium dark brown, 50-60 µm high. Asci 8-spored, broadly clavate, the tholus with amyloid flanks and an amyloid cap with vestiges of a narrow, weakly amyloid channel in the upper, central part, Rimularia-type. Ascospores 1-celled colourless to finally brown, broadly ellipsoid, (10-)16-18(-22) x (7-)9-11(-13) µm. Photobiont chlorococcoid. Spot tests: cortex and especially medulla K-, C+ pink , KC+ pink, P-. Chemistry: gyrophoric acid, very rarely also norstictic acid.

Note: on steeply inclined surfaces of hard, base-rich or weakly calciferous siliceous rocks, mostly in upland areas but rarely occurring above treeline.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: absent

Dry mediterranean belt: absent

pH of the substrata:

1

2

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5

(info)

Solar irradiation:

1

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4

5

(info)

Aridity:

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5

(info)

Eutrophication:

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5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

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6

(info)

Predictive model

Index Fungorum GBIF

Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php