ITALIC 8.0

Buellia flavescens (J. Steiner) Senkard.

Lichenologist, 42: 440, 2010. Basionym: Buellia saxorum var. flavescens J. Steiner - Verh. zool.-bot. Ges. Wien, 22: 345, 1907.

Synonyms:

Distribution: N - Lig (Senkardser 2010).

Description: Thallus crustose, episubstratic, rimose or rimose-areolate, white to yellowish white, epruinose, usually delimited by a black prothallus. Medulla white, but partly yellowish-inspersed, I+ blue. Apothecia lecideine, black, sessile and constricted at base, 0.2-0.5 mm across, with a flat to convex, epruinose disc, and a thick, raised, persistent proper margin. Epithecium brown, N-; hymenium colourless, not inspersed with oil droplets, 40-70 µm high; hypothecium dark reddish 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, ellipsoid, 12-14 x 7-9 µm, Physconia-type, the wall with a median thickening but without lateral thickenings. Photobiont chlorococcoid. Spot tests: K+ yellow, C+ deep yellow, KC+ yellow, P- or P+ faintly yellow. Chemistry: atranorin and placodiolic acid.

Note: a recently-resurrected saxicolous species growing on siliceous rocks at low elevations. For further details see Senkardesler (2010).

Growth form: Crustose

Substrata: rocks

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Taxon bound to maritime-coastal situations

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: absent

Oromediterranean belt: absent

Montane belt: absent

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: extremely rare

Dry mediterranean belt: extremely rare

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

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3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

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6

(info)

Predictive model

Index Fungorum GBIF