ITALIC 8.0

Porina hoehneliana (Jaap) R. Sant.

Symb. Bot. Upsal., 12, 1: 262, 1952. Basionym: Calonectria hoehneliana Jaap - Ann. Myc., 14: 10, 1916.

Synonyms:

Distribution: C - Tosc (Puntillo & Ottonello 1997, Puntillo 2000), Umb (Ravera & al. 2011), Laz. S - Camp (Puntillo & al. 2000, Puntillo 2000, Nimis & Tretiach 2004, Puntillo & Puntillo 2004), Bas (Puntillo & al. 2012), Cal (Puntillo 1996, 2000, Sérusiaux 1998).

Description: Thallus crustose, thinly episubstratic, continuous or forming small dispersed patches, smooth, grey to grey-green, without a distinct prothallus. Perithecia 0.15-0.3 mm across, hemispherical, only slightly constricted at base, dark reddish brown, somehow shiny, at least when young partly covered by a thalline layer. Involucrellum 10-30 μm thick, yellowish red, K+ orange (Porina-yellow pigment), extending down to the substrate; algal cells present in a layer between the involucrellum and the perithecial wall; exciple prosoplectenchymatous, colourless or pale yellow, 4-7 μm thick in upper part, up to 15 μm thick at base; paraphyses richly branched and anastomosing, c. 1.5 µm thick; hymenial gel I-, K/I-. Asci 8-spored, clavate-cylindrical, thin-walled throughout, functionally unitunicate, dehiscent by rupture of the apex, with no extruded inner layers and an apical ring structure, I-, K/I-. Ascospores 3-septate, hyaline, fusiform to almost bacilliform with subacute ends, 17-23 x 2-3.5 µm. Photobiont trentepohlioid. Spot tests: thallus K-, C-, KC-, P-. Chemistry: thallus without lichen substances.

Note: a humid subtropical to Mediterranean-Atlantic lichen found on smooth bark and leaves of evergreen plants (e.g. on leaves of Buxus and cladodes of Ruscus) in warm-humid woodlands near the coast; exclusively Tyrrhenian in Italy. It is included in the Italian red list of epiphytic lichens as “Vulnerable” (Nascimbene & al. 2013c).

Growth form: Crustose

Substrata: bark and leaves

Photobiont: Trentepohlia

Reproductive strategy: mainly sexual

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: absent

Padanian area: absent

Humid submediterranean belt: extremely 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

D. Puntillo CC BY-SA 04

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

Herbarium: TSB (30814)
2003/03/17

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

Herbarium: TSB (9354)
2001/11/29

Domenico Puntillo; Owner: Domenico Puntillo

Italy