Lecania sylvestris var. umbratica (Arnold) M. Mayrhofer

in Nimis & Poelt, Studia Geobot., 7, suppl. 1: 112, 1987. Basionym: Biatorina proteiformis f. umbratica Arnold - Flora, 57: 569, 1874.
Synonyms:
Description: Thallus crustose, endosubstratic or of scattered granules, white to yellowish white, poorly evident. Apothecia 0.3-0.4 mm across, usually sparse, rounded, with a reddish brown to dark brown, slightly convex disc, without an evident margin (with a few algal cells restricted to the lower edges of the apothecium). Thalline exciple absent or very poorly developed; proper exciple thin, poorly evident; epithecium yellowish brown to brown, the pigment rapidly extending to the upper part opf the hymenium; hymenium colourless or yellowish in upper part, 60-85 µm high; paraphyses few, hardly exceeding the number of asci, coherent, not or only slightly swollen at apex; hypothecium pale. Asci 8-spored, narrowly clavate, with a K/I+ blue tholus and a central non-amyloid area, Bacidia-type. Ascospores 1-septate, hyaline, ellipsoid, thin-walled, 11-16 x 4-7 µm, without a gelatinous perispore. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Montane belt: very rare
Dry submediterranean belt: very rare
Humid submediterranean belt: very rare
Padanian area: absent

pH of the substrata:

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Solar irradiation:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Rarity

absent
extremely rare
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Predictive map

E. Pittao CC BY-SA 4.0
TSB 16840


Elena Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (16840)
15/02/2017


Elena Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (16840)
15/02/2017


Elena Pittao; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (16840)
15/02/2017


E. Pittao CC BY-SA 04
TSB 16840


E. Pittao CC BY-SA 04
TSB 16840