ITALIC 8.0

Rhizocarpon inarense (Vain.) Vain.

Hedwigia, 37: 86, 1898. Basionym: Lecidea chionophiloides subsp. inarensis Vain. - Meddel. Soc. Fauna Flora Fenn., 10: 124, 1883.

Synonyms:

Distribution: N - TAA (Nascimbene 2005).

Description: Thallus crustose, episubstratic, whitish yellow-green, greyish-yellow or straw-coloured, rarely bluish yellow to bluish green, areolate, forming patches 2-5 cm in diam., delimited by a black prothallus which is also visible as a hypothallus between the areoles. Areoles round and convex to angular and flat, widely dispersed to contiguous, 0.4-1 mm wide, 0.1-0.3 mm thick, smooth. Cortex 15-30 µm thick; medulla white, I- or I+ faintly blue. Apothecia frequent, lecideine, arising between the areoles, mostly round, 0.5-1.2 mm across, with a black, weakly to strongly convex, epruinose disc, and a thin, finally often excluded proper margin. Proper exciple brownish red, K+ intensifying red; epithecium dirty green to bluish green, K- or K+ intensifying green; hymenium colourless 110-150 µm high, K/I+blue; paraphysoids strongly conglutinate, richly branched and anastomosed, slightly clavate; hypothecium dark brown, K-, 70-150 µm high. Asci 8-spored, clavate, fissitunicate, with a well-developed tholus, lacking an ocular chamber, Rhizocarpon-type. Ascospores 1-septate, dark brown, ellipsoid, 21-30 x 10-12 µm, halonate. Photobiont chlorococcoid. Spot tests: medulla K+ yellow turning blood-red, C-, KC-, P+ pale yellow. Chemistry: rhizocarpic and norstictic acids, sometimes with traces of psoromic or gyrophoric acids.

Note: a circumboreal to arctic-alpine species of siliceous rocks, reaching the nival belt in the Alps, where it is probably more widespread.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: very 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

Herbarium samples

Index Fungorum GBIF

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

Juri Nascimbene - CC BY-SA 4.0

Stelvio National Park, Reg. Trentino-Alto Adige Prov. Trento, Italy.
07.2005