ITALIC 8.0

Bilimbia accedens Arnold

Flora, 45: 391, 1862.

Synonyms: Bacidia accedens (Arnold) Lettau; Bacidia decedens (Stizenb.) Mig.; Mycobilimbia accedens (Arnold) V. Wirth ex Hafellner; Myxobilimbia accedens (Arnold) Hafellner

Distribution: N - VG (TSB 15457), Frl, TAA, Lomb (Ravera & al. 2022), Piem, Emil (Tretiach & al. 2008, Fariselli & al. 2020). C - Tosc (Jatta 1909-1911), Marc (TSB 24011), Abr (Jatta 1909-1911), Mol (Nimis & Tretiach 2004, Caporale & al. 2008). S - Camp (Nimis & Tretiach 2004), Bas (Jatta 1909-1911).

Description: Thallus crustose, episubstratic, whitish, farinose-granulose. Apothecia frequent, biatorine, sessile, 0.3-0.7(-0.8) mm across, with a blackish brown to black, initially flat, then rapidly convex disc, and a thin, soon excluded proper margin. Proper exciple well-developed, of stout, radiating hyphae in a gel matrix; epithecium bright to blackish emerald green or olive-green, K-; hymenium colourless, >60 µm high, I+ blue; paraphyses coherent, mostly simple, 2-3 μm thick at mid-level, the apical cells up to 5(-6) μm wide; hypothecium reddish brown at least in upper part. Asci 8-spored, cylindrical-clavate, with a K/I+ blue apical dome penetrated by a narrow, K/I– apical cushion surrounded by an indistinct, apically often tapering, wall K/I– but surrounded by an I+ red-brown, K/I+ blue outer layer. Ascospores (5-)7-9(-10)-septate, hyaline, ellipsoid-cylindrical, 20-45 x (5-)6-7(-9) µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.

Note: on mosses overgrowing soil and rocks, with optimum on calciferous substrata in upland areas. Closely related to, and perhaps a synonym of Bilimbia sabuletorum. The record from Sicily (Nimis 1993: 442) was due to a misidentification. For synonymies see Ekman (1996).

Growth form: Crustose

Substrata: soil, terricolous mosses, and plant debris

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rare

Subalpine belt: rare

Oromediterranean belt: absent

Montane belt: rare

Submediterranean belt: absent

Padanian area: absent

Humid submediterranean belt: absent

Humid mediterranean belt: absent

Dry mediterranean belt: absent

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

2

3

4

5

(info)

Poleotolerance:

0

1

2

3

(info)

Altitudinal distribution:

1

2

3

4

5

6

(info)

Predictive model

Herbarium samples

Index Fungorum GBIF

P.L. Nimis CC BY-SA 04

TSB 34837

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste

Herbarium: TSB (34837)
2002/02/16