ITALIC 8.0

Nevesia sampaiana (Tav.) P.M. Jørg., L. Lindblom, Wedin & S. Ekman

Lichenologist, 46: 652, 2014. Basionym: Pannaria sampaiana Tav. - Port. Acta Biol., ser. B, 3: 76, 1950.

Synonyms: Fuscopannaria sampaiana (Tav.) P.M. Jørg.; Pannaria craspedia var. isidiata Harm.

Distribution: N - Emil (Fariselli & al. 2020), Lig (Brunialti & al. 1999). C - Tosc (Benesperi & al. 2007).

Description: Thallus crustose-subsquamulose, heteromerous, 150-250 μm thick, firmly attached, cracked-areolate, sorediate, delimited by a bluish-black prothallus. Squamules pale chestnut brown to pale reddish brown, 0.5-2 mm wide, the marginal ones often larger and elongate, to 3-4 mm wide and long, rounded to slightly irregular in outline, flat to slightly convex, most often contiguous, with slightly ascending, usually paler margins; soralia cream-coloured, at first marginal, later confluent and often covering the whole central part of thallus, with finely granular soredia; lower surface ecorticate, developing on a felt-like, blue-black hypothallus. Upper cortex paraplectenchymatous, 35-40(-60) μm thick; medulla white, 50-75 μm thick, of intricate hyphae forming a lax plectenchyma, gradually merging into the hypothallus. Apothecia lecanorine, unknown in the mature state, the hymenium hemiamyloid. Photobiont cyanobacterial (Nostoc, the cells in clusters). Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a mild-temperate species found on bark of ancient deciduous trees in humid woodlands; certainly very rare and endangered in Italy. It is included in the Italian red list of epiphytic lichens as “Vulnerable” (Nascimbene & al. 2013c).

Growth form: Squamulose

Substrata: bark

Photobiont: cyanobacteria, filamentous (e.g. Nostoc, Scytonema)

Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)

Most common in areas with a humid-warm climate (e.g. most of Tyrrenian Italy)

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: extremely rare

Padanian area: absent

Humid submediterranean belt: extremely 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

Herbarium samples

Index Fungorum GBIF

P.L. Nimis CC BY-SA 4.0

TSB 17117

P.L. Nimis CC BY-SA 4.0

TSB 17117

P.L. Nimis CC BY-SA 4.0

TSB 17117

P.L. Nimis CC BY-SA 4.0

TSB 17117

P.L. Nimis CC BY-SA 4.0

TSB 17117