Buellia leptocline (Flot.) A. Massal.

Geneac. Lich.: 20, 1854. Basionym: Lecidea leptocline Flot. - Bot. Zeit., 8: 555, 1850.
Synonyms: Buellia gevrensis Th. Fr.; Buellia hypopodioides (Nyl.) Arnold; Buellia leptocline f. mougeotii (Hepp ex Arnold) Th. Fr.; Buellia leptocline var. inarimensis Jatta?; Lecidea hypopodioides f. ferruginascens Nyl.; Lecidea hypopodioides Nyl.; Lecidea mougeotii Hepp
Description: Thallus crustose, of variable thickness, endo- to episubstratic, continuous to rimose-areolate, whitish to grey, without a distinct dark prothallus. Cortex overlain by a thin epinecral layer inspersed with crystals; medulla strongly amyloid, I+ violet. Apothecia lecideine, black, 0.5-1.2(-1.5) mm across, sessile and constricted at base, with a flat to convex disc, and a thick, prominent, persistent proper margin. Proper exciple c. 100 µm wide laterally, Leptocline-type, homogeneously dark brown, with an additional orange pigment reacting K+ reddish (solution), the inner part of long-celled, interwoven hyphae, the outer part of long-celled, parallel, strongly agglutinated and thick-walled hyphae; epithecium brown, N-; hymenium colourless, not inspersed with oil droplets, 75-90(-100) µm high; hypothecium dark brown. Asci 8-spored, clavate to cylindrical-clavate, the apical dome K/I+ dark blue with a pale, conical-pointed apical cushion (axial mass), the wall I-, but the thin outer gel I+ blue, Bacidia-type. Ascospores 1-septate, brown, oblong, not constricted at septum, 12-16(-18) x (6-)7.5-8.5(-11) µm, Physconia-type, with a rugulate wall (but smooth-walled when young). Pycnidia black, immersed in thallus. Conidia bacilliform, 4-5 x c. 1 µm. Photobiont chlorococcoid. Spot tests: thallus K+ yellow, C-, KC-, P- or P+ very faintly yellow. Chemistry: atranorin.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
In underhangs rarely wetted by rain

Commonnes-rarity: (info)

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

pH of the substrata:

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Poleotolerance:

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Altitudinal distribution:

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Rarity

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P.L. Nimis CC BY-SA 4.0
TSB 24577


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (24577)
2003/03/17