ITALIC 8.0

Lendemeriella sorocarpa (Vain.) S.Y. Kondr.

in Kondratyuk & al., Acta Bot. Hung., 62, 1-2: 121, 2020. Basionym: Placodium sorocarpum Vain. - Ann. Soc. zool.-bot. Fenn., 9: 320, 1929.

Synonyms: Caloplaca sorocarpa (Vain.) Zahlbr.

Distribution: N - Frl (vidi!), TAA (Hinteregger 1994).

Description: Thallus crustose, continuous, areolate or warted, rather thin, greenish white to greenish grey or grey, often delimited by a dark prothallus, with numerous, perfectly circular, (0.1-)0.25-0.5 mm wide, at first immersed, then protruding to almost stipitate and barrel-shaped, whitish to greenish grey soralia which are often surrounded by a whitish, thin thalline rim. External soredia brown, up to 20(-30) µm in diam., surrounded by a continuous wall of more or less isodiametrical (up to 7 µm wide) to somewhat elongate cortical cells, the brown pigment K+ fuscous brown, N+ reddish brown. Apothecia extremely rare, 0.2-0.3 mm across, at first immersed, then sessile, with a concave to flat, orange to red-brown, rough disc, a thin proper margin, and sometimes a poorly developed thalline margin. Proper exciple brownish in outer part, colourless within, of radially arranged hyphae, sometimes overlain by a paraplectenchymatous thalline exciple in lower part; epithecium reddish orange, K+ red, with a granulose epipsamma; hymenium colourless, 70-80 μm high; paraphyses simple or rarely sparingly branched, not or slightly swollen at apex (2-3.5 μm thick); hypothecium colourless. Ascospores 2-celled, polarilocular, hyaline, ellipsoid, 8-15 x 5-8 μm, the equatorial thickening (“septum”) 2-4.5 μm. Pycnidia rare, orange to red-brown. Conidia bacilliform, 4.5-6 x c. 1 μm. Photobiont chlorococcoid. Spot tests: thallus K-, C-or C+ pale yellow (soralia only), KC-, P-; pigmented external soredia K+ fuscous brown, N+ reddish brown; apothecial disc K+ red. Chemistry: thallus with roccellic acid; apothecia with different anthraquinones.

Note: a usually sterile lichen with a grey thallus and concolorous, circular, often raised soralia; easily overlooked, it is one of the most common sorediate crusts growing on the branches of Rhododendron. It was included in the Italian red list of epiphytic lichens as “Critically Endangered” (Nascimbene & al. 2013c).

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

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

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: rather 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

Pier Luigi Nimis - CC BY-SA 4.0

TSB 25276

Pier Luigi Nimis - CC BY-SA 4.0

TSB 25276

Pier Luigi Nimis - CC BY-SA 4.0

TSB 25276

Pier Luigi Nimis - CC BY-SA 4.0

TSB 25276

P.L. Nimis CC BY-SA 4.0

TSB 25272

Curtis Randall Björk – CC BY-SA 4.0

British Columbia, Coast Ranges, Bute Inlet Date: 2008-08-03 On stems of Salix, subalpine