ITALIC 7.0

Ramalina dilacerata (Hoffm.) Hoffm.

Herb. Viv., Coll. Plant. Sicc. Ces. Univ. Mosquensis: 451, 1825. Basionym: Lobaria dilacerata Hoffm. - Deutschl. Fl., 2: 140, 1796.

Synonyms: Fistulariella dilacerata (Hoffm.) Bowler & Riefner; Fistulariella minuscula (Nyl.) Bowler & Rundel; Ramalina minuscula Nyl.

Distribution: N - Ven, TAA (Nascimbene & al. 2007b). C - Abr, Mol (Ravera & Genovesi 2012, Genovesi & Ravera 2014). S - Camp (Aprile & al. 2003), Bas (Ravera & al. 2015d).

Description: Thallus fruticose, pale yellowish green, to 1.5(-2) cm tall, erect to ascending, abundantly branched, firmly attached by a basal holdfast, forming shrubby tufts to 2 cm broad. Branches <1 mm wide, inflated and fistulose, pellucid when wet, with a few to numerous, small, elongate or rounded fenestrations. Cortex thin; medulla white, very lax, especially below the apothecia, with sparse hyphae forming discontinuous bundles of chondroid tissue. Apothecia frequent, lecanorine, with a greenish disc and a thin, smooth thalline margin, mostly subterminal on smaller branches, subtended by a short, pointed spur. Asci 8-spored, clavate, Bacidia-type. Ascospores 1-septate, hyaline, shortly fusiform, 12-15 x 4-6 µm. Photobiont: chlorococcoid. Spot tests: thallus and medulla K-, C-, KC-, P-. Chemistry: cortex with usnic acid; medulla with sekikaic acid (without homosekikaic or divaricatic acids).

Note: a cool-temperate to boreal-montane, probably circumpolar lichen found on twigs and branches of acid-barked trees (especially conifers) and more rarely on lignum in very humid situations, mostly in the montane and subalpine belts. For the earlier records from Southern Italy see Nimis (1993: 598). It is included in the Italian red list of epiphytic lichens as “Vulnerable” (Nascimbene & al. 2013c).

Growth form: Fruticose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: extremely rare

Oromediterranean belt: absent

Montane belt: extremely 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

Index Fungorum GBIF

Felix Schumm - CC BY-SA 4.0

[9499], USA, Washington, Lewis County: Randle. Along trail near Oliver Creek at bridge. Mixed stand of hardwood and conifers 20 years old along a small riparian area. On Alnus rubra bole. 46°32.783' N, 121°59.714' W, 1540 ft. Leg. Jim Riley 24.09.2001

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

Herbarium: TSB (33746)
2003/03/12

E. Pittao; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (27597)
2008.04.02

E. Pittao; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (27597)
2008.04.02

E. Pittao; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (33746)
2008.04.02

Felix Schumm - CC BY-SA 4.0

[9499], USA, Washington, Lewis County: Randle. Along trail near Oliver Creek at bridge. Mixed stand of hardwood and conifers 20 years old along a small riparian area. On Alnus rubra bole. 46°32.783' N, 121°59.714' W, 1540 ft. Leg. Jim Riley 24.09.2001

Pier Luigi Nimis - CC BY-SA 4.0

TSB 44158