ITALIC 8.0

Biatora ocelliformis (Nyl.) Arnold

Flora, 53: 476, 1870. Basionym: Lecidea ocelliformis Nyl. - Flora, 48: 145, 1865.

Synonyms: Biatora atroviridis (Arnold) Hellb.; Biatorina subglobulosa (Nyl.) Arnold; Catillaria globulosa var. subglobulosa (Nyl.) Zahlbr.; Catillaria prasina f. ocelliformis (Nyl.) Erichsen; Ivanpisutia ocelliformis (Nyl.) S.Y. Kondr.; Lecidea atroviridis (Arnold) Th. Fr.; Lecidea atroviridis f. ocelliformis (Nyl.) Blomb. & Forssell; Lecidea ocellaris Vain.; Lecidea subglobulosa Nyl.; Lecidella turgidula var. atroviridis Arnold

Distribution: N - TAA (Printzen 1995, Thor & Nascimbene 2007, Nascimbene & al. 2007b, 2022, Nimis & al. 2015), Piem (Isocrono & al. 2004). S - Cal (Puntillo 1996).

Description: Thallus crustose, endosubstratic or very thinly episubstratic, grey to olive green (turning pale brown in the herbarium), continuous to rimose-areolate, the areoles convex, developing on a usually poorly evident dark grey hypothallus, forming up to 4 cm wide patches. Apothecia biatorine, rounded or slightly irregular in outline, sometimes tuberculate, broadly sessile, 0.25-0.6(-0.8) mm across, with a dark grey to blue-black, epruinose, flat to moderately convex disc, and a thin, often paler, finally excluded proper margin. Proper exciple colourless to pale brown in the outer rim, the inner part olive-brown, 30-85 μm wide; epithecium poorly differentiated from the hymenium, sometimes with dark brown patches; hymenium colourless or pigmented as the epithecium, 30-40(-55) µm high; paraphyses simple or sparingly branched in upper part, 1-1.5 µm thick, the apical cells slightly swollen; hypothecium dirty olive, mottled with green-black to dark brown patches, N+ violet, 10-60(-250) µm high. Asci 8-spored, clavate, with a K/I+ blue apical dome penetrated by a narrow, K/I– apical cushion surrounded by a narrow, deeply K/I+ blue zone, the wall K/I- but surrounded by an I+ red-brown, K/I+ blue outer layer, the ocular chamber relatively small, Biatora-type, 26-38 x 7.5-11.5 µm. Ascospores 1-celled (rarely 1-septate), hyaline, narrowly ellipsoid, (7.5-)9.5-14(-20) x (2.5-)3-4(-5.5) µm. Pycnidia very rare, inconspicuous, colourless, pyriform, c. 50 µm across. Conidia 9.5-13 x 0.7-1 µm. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P+ red. Chemistry: thallus with argopsin; exciple and hypothecium with the Bagliettoana-green pigment.

Note: a boreal-montane species found on the bark of mostly young, deciduous and coniferous trees in montane to subalpine forests. It is included in the Italian red list of epiphytic lichens as “Endangered” (Nascimbene & al. 2013c).

Growth form: Crustose

Substrata: bark

Photobiont: green algae other than Trentepohlia

Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent

Subalpine belt: very rare

Oromediterranean belt: absent

Montane belt: very 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 26531

Domenico Puntillo; Owner: Domenico Puntillo

Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/

Courtesy: Anita Stridvall

Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/

Courtesy: Anita Stridvall

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

Herbarium: TSB (26531)
2001/12/09