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
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.
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
Montane belt: very rare
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: absent

pH of the substrata:

12345
info

Solar irradiation:

12345
info

Aridity:

12345
info

Eutrophication:

12345
info

Poleotolerance:

0123
info

Altitudinal distribution:

123456
info

Rarity

absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
Loading data...
Occurrence data
Predictive map

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