ITALIC 7.0

Rhizocarpon copelandii (Körb.) Th. Fr.

Lichenogr. Scand., 2: 615, 1874. Basionym: Buellia copelandii Körb. - Zweite Deutsche Nordpolarfahrt, 2: 79, 1874.

Synonyms: Catocarpus badioater f. copelandii (Körb.) Eitner; Catocarpus copelandii (Körb.) Arnold; Rhizocarpon cyclodes Hellb. ex Th. Fr.; Rhizocarpon elevatum H. Magn.; Rhizocarpon hyperboreum (Vain.) Vain.

Distribution: N - TAA.

Description: Thallus crustose, episubstratic, areolate, very variable, from shade-forms with creamy white, 0.6-0.8 mm wide, bullate areoles, to forms of sun-lit sites with grey to brown, flat areoles; black prothallus usually present. Apothecia lecideine, black, to 0.7-1(-1.8) mm across, with a flat to convex disc and a persistent or soon excluded proper margin. Proper exciple poorly developed, dark brown in outer part, brown within, of radiating hyphae, K+ red (red crystals); epithecium blue-black to green-black, K-; hymenium colourless, 120-150 µm high; paraphysoids richly branched and anastomosing, c. 2.5-3 µm thick in lower part, scarcely swollen at apex; hypothecium red-brown to brown-black. Asci 8-spored, disintegrating early, clavate, fissitunicate, with a well-developed tholus, lacking an ocular chamber, Rhizocarpon-type. Ascospores 1-septate, soon dark bluish black, ellipsoid, 18-35 x 9-15(-17) µm, halonate. Photobiont chlorococcoid. Spot tests: medulla K+ yellow turning red (acicular crystals) or K+ persistently yellow, C-, KC-, P+ yellowish or P+ orange. Chemistry: norstictic or stictic acid.

Note: an arctic-alpine lichen of siliceous rocks above treeline, much more frequent in the Arctic zone than in the Alps, where it reaches the nival belt.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

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

Index Fungorum GBIF

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

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

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