ITALIC 8.0

Rinodina trevisanii (Hepp) Körb.

Parerga Lichenol., 1: 70, 1865. Basionym: Psora trevisanii Hepp - Flecht. Europ.: 80, 1853.

Synonyms:

Distribution: N - TAA (Nimis & al. 2018).

Description: Thallus crustose, thinly episubstratic, grey to yellowish or reddish brown, dull, most often discontinuous, sometimes becoming rimose, rarely rimose-areolate, without a distinct prothallus. Apothecia lecanorine or biatorine, adnate, usually dispersed, up to 0.35-0.5 mm across, with a dark brown, at first flat but finally often convex disc, an up to 0.05 mm thick entire, finally excluded thalline margin and often a proper margin concolorous with disc which may form a thin parathecial ring. Thalline exciple corticate or ecorticate, 25-50(-60) µm wide laterally, sometimes expanded to 30-60 µm in lower part, the cortex paraplectenchymatous, 5-10(-15) µm wide; proper exciple 5-10(-15) µm wide laterally, expanding to 20-35 µm at periphery, 30-60 µm wide if the apothecia are biatorine, red-brown in outer part; epithecium red-brown, K-; hymenium colourless, 65-90 µm high, not inspersed with oil droplets; paraphyses coherent, 2-2.5 µm thick at mid-level, the apical cells up to 3.5-4.5 µm wide, immersed in a dispersed pigment; hypothecium colourless, 30-80 µm high. Asci 8-spored, cylindrical-clavate, the K/I+ blue tholus penetrated by a faintly amyloid apical cushion with parallel or diverging flanks, the wall K/I-, surrounded by a K/I+ blue outer layer, Lecanora-type. Ascospores 1-septate, brown, ellipsoid, (14.5-)18-19.5(-23) xc (7.5-)8.5-9(-10.5) µm, Physconia-type, the wall smooth or minutely warted, the torus always well-developed, with an ontogeny of type A (apical wall thickening after septum formation). Pycnidia immersed, globose, dark red-brown. Conidia bacilliform, 3-4 x c. 1 µm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: zeorin (traces).

Note: a corticolous species rarely occurring on wood, often confused with R. archaea (see Mayrhofer & Sheard 2007, Sheard 2018), with a scattered distribution throughout the Alps.

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: very rare

Oromediterranean belt: absent

Montane belt: very rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

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

František Bouda - Modrava, NP Šumava [Western Bohemia] 2017 - Source: https://dalib.cz/en/taxon/info/Rinodina%20trevisanii