ITALIC 8.0

Rhizocarpon inimicum Poelt & Vězda

Herzogia, 6: 471, 1984.

Synonyms:

Distribution: S - Cal, Si.

Description: Thallus crustose, areolate, grey-black, forming orbicular, up to 1.5 cm wide patches on the thalli of Glaucomaria rupicola s.lat. Areoles 0.5-1.5(-2) mm wide, at first flat, then slightly convex, covered with a thin epinecral layer, the central ones usually dying and falling off. Medulla white, I+ pale blue. Apothecia lecideine, black, 0.8-1.2 mm across, initially developing on the surface of the areoles, then mostly marginal, often in small clusters, with a with a slightly convex disc and a very thin, often indistinct (also in young apothecia) proper margin. Proper exciple thin, cellular, appearing brown-black only in thick sections; epithecium brown-black; hymenium colourless, 120-150 µm high; paraphysoids strongly conglutinate, richly branched and anastomosing, sometimes slightly capitate; hypothecium dark brown. Asci (6-)8-spored, clavate, fissitunicate, with a well-developed tholus, lacking an ocular chamber, Rhizocarpon-type. Ascospores submuriform, mostly 4-celled, usually with a single transverse septum (sometimes slightly constricted there) and usually 1 longitudinal septum per cell (the 2 septa often arranged crosswise), grey-brown to brown-black, ellipsoid, 19-26 x 10-14 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: thallus without lichen substances.

Note: a mostly southern European species of siliceous rocks which starts the life-cycle on the thalli of species of the Glaucomaria rupicola-complex; probably more widespread in Southern Italy, to be looked for in Sardinia.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

paras Glaucomaria rupicola s.lat.

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: extremely rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: very rare

Humid mediterranean belt: extremely rare

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

P.L. Nimis CC BY-SA 04

TSB 9081

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (9081)
2001/12/01
on the host, Lecanora rupicola