ITALIC 8.0

Jamesiella anastomosans (P. James & Vězda) Lücking, Sérus. & Vězda

Lichenologist, 37: 165, 2005. Basionym: Gyalideopsis anastomosans P. James & Vězda in Vězda - Folia Geobot. Phytotaxon., 7: 209, 1972.

Synonyms:

Distribution: N - TAA (Nascimbene 2005, Nascimbene & al. 2006e). S - Cal (Puntillo 1996, Puntillo & Puntillo 2004).

Description: Thallus crustose, thinly episubstratic and film-like, smooth or verruculose, glaucous to pale grey, forming discrete, rarely coalescing, up to 1 cm wide patches, often delimited by a pale grey to white prothallus. Hyphophores (thlasidia) usually abundant and crowded in sterile specimens, rare or most often absent in fertile ones, spine-like to bottle-shaped, 0.1-0.5 mm high, often flattened, pale greenish to grey, translucent at the pointed apices, containing both conidia and algae in the central, gelatinous mass of diahyphae. Apothecia lecideine, 0.2-0.6 mm across, sessile and constricted at base, scattered or rarely crowded and contiguous, round to angular, with an orange-red to black-brown disc and a translucent, darker (when wet), smooth or irregularly uneven proper margin. Proper exciple and hymenium of loosely entangled hyphae immersed in a gelatinous matrix. Asci (6-)8-spored, cylindrical-clavate, thickened at apex (tholus), the wall I-, the content K/I+ brown-red. Ascospores muriform or submuriform, hyaline, ellipsoid or subclavate, 20-30 x 6-13 μm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: a mild-temperate lichen also known from New Zealand, found on bark of deciduous, rarely of coniferous trees in humid, undisturbed forests, often on twigs of Abies, more rarely on wooden bridges above small creeks. It is included in the Italian red list of epiphytic lichens as “Endangered” (Nascimbene & al. 2013c).

Growth form: Crustose

Substrata: bark and lignum

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual, or asexual by conidia and thalloconidia

Restricted to humid-warm, oceanic areas

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: extremely rare

Humid mediterranean belt: absent

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 34341

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

Herbarium: TSB (34341)
2002/02/24