Buellia uberior Anzi

Atti Soc. Ital. Sc. Nat. Milano, 9: 252, 1866.
Synonyms: Buellia atrocinerea (Anzi) Zahlbr.; Buellia contermina Arnold; Buellia lactea var. atrocinerea Anzi; Buellia malmei auct.; Buellia nitida Eitner
Distribution: N - Frl (Tretiach & Hafellner 2000), TAA, Ven, Lomb, VA (Piervittori & Isocrono 1999). C - Tosc, Sar (Scheidegger 1993).
Description: Thallus crustose, episubstratic, often growing on the thalli of Schaereria fuscocinerea, pale to dark grey, shiny, often delimited by a dark prothallus; medulla white, amyloid, I+ violet. Apothecia black, cryptolecanorine to zeorine, 0.2-0.8 mm across, immersed in the thallus. Proper exciple thin, dark brown to brown-black in outer part, colourless within, N-, aethalea-type; epithecium olive-green to olive-brown; hymenium colourless, without oil droplets, 42-68 µm high; hypothecium colourless to medium brown. Asci 8-spored, Bacidia-type. Ascospores 1-septate, brown, broadly oblong, constricted at septum, 8-12 x 4.5-6.5 µm, Buellia-type, the wall >1.5 µm thick, with a striate ornamentation. Pycnidia black, immersed in the thallus. Conidia bacilliform, 3.5-4 x 1-1.5 µm. Photobiont chlorococcoid. Spot tests: thallus K- or K+ yellow-orange, C+ red, KC+ red, P-. Chemistry: gyrophoric acid (major), variable amounts of stictic acid.
Note: a mainly arctic-alpine, circumpolar species found on hard, lime-free siliceous rocks, predominantly on inclined to subvertical faces wetted by rain in upland areas, with optimum above treeline; the species is most common in the Alps, rarer in the high Mediterranean mountains, and seems to be facultatively parasymbiotic.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
paras Schaereria fuscocinerea

Commonnes-rarity: (info)

Alpine belt: rare
Subalpine belt: very rare
Oromediterranean belt: extremely rare
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:

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Poleotolerance:

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P.L. Nimis CC BY-SA 4.0
TSB 42098



P.L. Nimis CC BY-SA 4.0
TSB 42098



P.L. Nimis CC BY-SA 4.0
TSB 42098



P.L. Nimis CC BY-SA 4.0
TSB 42098


Identifier https://lichenpor...1536635131_lg.jpg