ITALIC 8.0

Acarospora lavicola J. Steiner

Denkschr. math.-naturw. Cl. K. Akad. Wiss. Wien, 71: 95, 1902.

Synonyms:

Distribution: C - Sar. S - Si.

Description: Thallus crustose, episubstratic, sulphur yellow, sometimes finely white-pruinose, areolate. Areoles flat, 0.4-1.5 x 0.2-0.5 mm, scattered to usually contiguous, mostly angular. Cortex 30-50 µm thick; algal layer uneven, interrupted by hyphal bundles; medulla white. Apothecia aspicilioid or lecanorine, immersed in the thallus, mostly round, 0.6-1.4 mm across, with a dark brown disc and a more or less evident thalline margin. Epithecium brownish; hymenium colourless, up to 120 μm high, the hymenial gel hemiamyloid, K/I+ light blue fading to light red; paraphyses coherent, hardly swollen at apex; hypothecium colourless. Asci 100-200-spored, clavate, the apical dome K/I-. Ascospores 1-celled, hyaline, broadly ellipsoid to subglobose, 3.5-4.5 x 2-3.5 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV+ orange. Chemistry: rhizocarpic acid.

Note: a xeric subtropical species of igneous rocks in dry-warm areas, ranging from Macaronesia through southern Europe to Arabia. The species could be confused with forms of A. heufleriana which are poor in norstictic acid; previously treated as A. heufleriana var. massiliensis (Roux in litt.).

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Subcontinental: restricted to areas with a dry-subcontinental climate (e.g. dry Alpine valleys, parts of Mediterranean Italy)

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: extremely rare

Dry mediterranean belt: extremely rare

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

Felix Schumm; Owner: CC BY-SA 4.0

[TSB_9638], Italy, Sardinia, Prov. Nuoro, Torre Argentina N of Bosa, on tuff, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987

Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php (Courtesy: Anita Stridvall)

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

Herbarium: TSB (9638)
2001/11/21

Domenico Puntillo; Owner: Domenico Puntillo

Italy, Herb. Puntillo 4030

Felix Schumm; Owner: CC BY-SA 4.0

[TSB_9638], Italy, Sardinia, Prov. Nuoro, Torre Argentina N of Bosa, on tuff, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987

Felix Schumm – CC BY-SA 4.0

Image from: F. Schumm (2008) - Flechten Madeiras, der Kanaren und Azoren. Beck, OHG - ISBN: 978-3-00-023700-3

Felix Schumm – CC BY-SA 4.0

Image from: F. Schumm (2008) - Flechten Madeiras, der Kanaren und Azoren. Beck, OHG - ISBN: 978-3-00-023700-3

Felix Schumm - CC BY-SA 4.0

[TSB_9638], Italy, Sardinia, Prov. Nuoro, Torre Argentina N of Bosa, on tuff, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.

Felix Schumm - CC BY-SA 4.0

[TSB_9638], Italy, Sardinia, Prov. Nuoro, Torre Argentina N of Bosa, on tuff, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.

Felix Schumm - CC BY-SA 4.0

[TSB_9638], Italy, Sardinia, Prov. Nuoro, Torre Argentina N of Bosa, on tuff, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.

Felix Schumm - CC BY-SA 4.0

[TSB_9638], Italy, Sardinia, Prov. Nuoro, Torre Argentina N of Bosa, on tuff, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.

Felix Schumm - CC BY-SA 4.0

[TSB_9638], Italy, Sardinia, Prov. Nuoro, Torre Argentina N of Bosa, on tuff, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.

Felix Schumm - CC BY-SA 4.0

[TSB_9638], Italy, Sardinia, Prov. Nuoro, Torre Argentina N of Bosa, on tuff, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.

Felix Schumm - CC BY-SA 4.0

[TSB_9638], Italy, Sardinia, Prov. Nuoro, Torre Argentina N of Bosa, on tuff, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.

Felix Schumm - CC BY-SA 4.0

[TSB_9638], Italy, Sardinia, Prov. Nuoro, Torre Argentina N of Bosa, on tuff, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.

Felix Schumm - CC BY-SA 4.0

[TSB_9638], Italy, Sardinia, Prov. Nuoro, Torre Argentina N of Bosa, on tuff, c. 20 m. Leg. P.L. Nimis & M. Tretiach, 07.1987.

Manuel Gil

Spain, Canary Islands, Lanzarote

Ulrich Kirschbaum CC BY-SA 4.0 - Source: https://www.thm.de/lse/ulrich-kirschbaum/flechtenbilder

On basaltic rocks in dry and sunny environments.Portugal: Madeira. Spain, Canary Islands: La Gomera.