ITALIC 7.0

Squamarina oleosa (Zahlbr.) Poelt

Mitt. bot. Staatss. München, 2: 353, 1958. Basionym: Lecanora oleosa Zahlbr. in Handel- Mazzetti - Symb. Sin., 3: 175, 1930.

Synonyms:

Distribution: N - VG, VA (Piervittori & Isocrono 1999), Emil (Tretiach & al. 2008, Fariselli & al. 2020), Lig. C - Tosc (Benesperi 2006, 2007b), Marc (Nimis & Tretiach 1999), Sar. S - Camp (Aprile & al. 2003), Cal (Puntillo 1996), Si (Ottonello & al. 1994).

Description: Thallus squamulose, the squamules imbricate, rather thin (<0.8 mm thick), greenish brown with an oily appearance, the margins usually ascending, white; lower surface blackish. Apothecia frequent, lecanorine/zeorine, 1-3 mm across, with a greenish yellow, often slightly pruinose, first flat then convex disc, and a strongly pruinose, thin, finally excluded thalline margin. Epithecium brownish, granular; hymenium (I+ blue) and hypothecium colourless; paraphyses slightly thickened above. Asci 8-spored, clavate to cylindrical-clavate, the apical dome K/I+ dark blue, the wall I-, but the thin outer gel I+ blue, Bacidia-type. Ascospores 1-celled, hyaline, ellipsoid, fusiform, 14-20 x 4-7 µm, with more or less pointed ends. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-; medulla P+ yellow. Chemistry: thallus with usnic acid; medulla with psoromic acid.

Note: a typically submediterranean lichen found in fissures of calcareous rocks; never common, but certainly more widespread.

Growth form: Squamulose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: rare

Submediterranean belt: very rare

Padanian area: absent

Humid submediterranean belt: very rare

Humid mediterranean belt: extremely 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

P.L. Nimis CC BY-SA 04

TSB 13222

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

Herbarium: TSB (13222)
2001/11/30

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

Herbarium: TSB (13222)
2001/11/30

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Squamarina_oleosa.htm

France, fissures de rochers calcaires - session AFL 2008 - Lozère

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Squamarina_oleosa.htm

France, fissures de rochers calcaires - session AFL 2008 - Lozère

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Squamarina_oleosa.htm

France, 4/5/2011 - Parc Tre Padule - Corse de rochers calcaires - session AFL 2008 - Lozère

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Squamarina_oleosa.htm

France, 4/5/2011 - Parc Tre Padule - Corse de rochers calcaires - session AFL 2008 - Lozère

Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_S/Squamarina_oleosa.htm

France, 4/5/2011 - Parc Tre Padule - Corse de rochers calcaires - session AFL 2008 - Lozère