Lecanora allophana f. sorediata Vain.

Meddeland. Soc. Fauna Fl. Fenn., 3: 103, 1878.
Synonyms:
Description: Thallus crustose, smooth to verrucose, rather thick, usually white, sorediate, the soralia strongly convex, hemispherical, usually discrete, white, greyish white or yellowish white, with finely granulose soredia. Apothecia lecanorine, often occurring together with the soralia, (0.6-)1-2.5(-3) mm across, strongly constricted at base, with a reddish brown to orange-brown, usually glossy, concave to finally slightly convex disc, and a thick, raised, often flexuose and crenulate thalline margin. Thalline exciple indistinctly corticate, 30-40 µm thick laterally, 50-75(-90) µm thick at base, the superficial layer not sharply delimited from the medullary part, which is filled with with abundant, small crystals insoluble in K (the crystals reaching the cortex); epithecium orange to orange-brown, the pigment not dissolving in K, without crystals; hymenium colourless, not inspersed with oil droplets; paraphyses slightly thickened at tips to capitate; hypothecium colourless, not inspersed with oil droplets. Asci 8-spored, clavate, very thin-walled, with a K/I+ blue, tall tholus penetrated by a faintly amyloid apical cushion, the wall K/I-, surrounded by a blue outer layer, Lecanora-type. Ascospores 1-celled, hyaline, ellipsoid, (10-)13-19(-21) x (6-)7-10(-11) µm, the wall >1 µm thick. Photobiont chlorococcoid. Spot tests: thallus K+ yellow, C-, KC-, P- or P+ pale yellow. Chemistry: atranorin (major) and unknown terpenoids.
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: absent
Montane belt: very rare
Dry submediterranean belt: very rare
Humid submediterranean belt: absent
Padanian area: absent

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Rarity

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P.L. Nimis CC BY-SA 4.0
TSB 24112


Curtis Randall Björk – CC BY-SA 4.0
British Columbia, urban Prince George, Cottonwood Park Date: 2012-05-00 Trunk Populus balsamifera in oldgrowth riparian forest, in intensely air-polluted site


P.L. Nimis CC BY-SA 04
TSB 24112


P.L. Nimis CC BY-SA 04
TSB 24112