ITALIC 8.0

Lecania olivacella (Nyl.) Zahlbr.

Cat. Lich. Univ., 5: 739, 1928. Basionym: Lecanora olivacella Nyl. - Flora, 58: 298, 1875.

Synonyms: Lecanora subalbens Nyl.

Distribution: N - Piem (TSB 32902), Lig (Valcuvia & al. 2000). C - Sar. S - Si (Nimis & al. 1996b).

Description: Thallus crustose, episubstratic, areolate-subsquamulose, white-grey to yellowish brown, forming up to 2 cm wide patches. Areoles scattered, almost squamulose, 0.4-0.8 mm wide. Apothecia lecanorine, 0.3-0.4(-0.7) mm across, sessile, circular or ellipsoid, with an orange-red to dark brown (uniformly cinnamon-brown when wet), flat to slightly convex disc often surrounded by a darker parathecial ring, and a smooth to crenulate, narrow, whitish or whitish-grey, persistent thalline margin. Thalline exciple overlain by an epinecral layer, with a thin pseudoparenchymatous cortex of isodiametrical or oval cells and a medulla rich in algal cells; proper exciple narrow, dark-pigmented in upper part; epithecium brown to orange-brown, with an epipsamma; hymenium colourless, 55-65 μm high; paraphyses mostly simple, the apical cells slightly swollen and pigmented; hypothecium colourless. Asci 8-spored, with a K/I+ blue tholus and a central non-amyloid area, Bacidia-type. Ascospores 1-septate, hyaline, narrowly ellipsoid, (10-)11.5-14 x 4.5-6 μm. Photobiont chlorococcoid. Spot tests: thallus and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a widespread, but rare species found on calcareous and basic siliceous rocks, with a wide altitudinal range; to be looked for further in the Alps.

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: extremely rare

Oromediterranean belt: rare

Montane belt: rare

Submediterranean belt: very rare

Padanian area: absent

Humid submediterranean belt: very rare

Humid mediterranean belt: very 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

Herbarium samples

Index Fungorum GBIF

E. Pittao CC BY-SA 4.0

TSB 20105

Elena Pittao; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (20105)
15/02/2017

Elena Pittao; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (20105)
15/02/2017

Elena Pittao; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (20105)
15/02/2017

Elena Pittao; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (20105)
15/02/2017