Tetramelas geophilus (Sommerf.) Norman

Nytt Mag. Naturvid., 7: 236, 1853. Basionym: Lecidea geophila Flörke ex Sommerf. - Suppl. Fl. Lappon.: 157, 1826.
Synonyms: Buellia geophila (Sommerf.) Lynge; Buellia insignis var. muscorum (Hepp) Körb.; Buellia triphragmia (Nyl.) Arnold non auct.; Diplotomma geophilum (Sommerf.) S.R. Singh & D.D. Awasthi; Lecidea triphragmia Nyl. non auct.
Description: Thallus crustose, episubstratic, continuous to granulose-verrucose, white to grey-white, without a distinct prothallus. Cortex with calcium oxalate crystals: medulla white, I-. Apothecia lecideine, black, to 0.3-1.2 mm across, immersed to sessile, with a flat to convex, rarely pruinose disc, and a thin, finally often excluded proper margin. Proper exciple brown-black throughout, with rounded, thin-walled cells, the pigment giving a K+ yellow solution; epithecium brown; hymenium colourless, not inspersed with oil droplets, 70-100 µm high, I+ blue; paraphyses branched in upper part, the apical cell 4-5 µm wide, with a brown cap; hypothecium brown-black. 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 3-septate, dark brown, often curved, narrowly ellipsoid, (20-)24-34(-43) x 6-13 µm, the wall uniformly thick, indistinctly rugulate. Pycnidia rare, black, immersed in thallus. Conidia bacilliform, 4-6 µm long. Photobiont chlorococcoid. Spot tests: thallus K- or K+ indistinctly yellow, C-, but C+ intensely yellow under the dissecting microscope , KC+ yellow to orange-yellow, P-. Chemistry: 6-O-methylarthothelin.
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: very rare
Montane belt: absent
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 4.0
TSB 11896


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (11896)
2001/11/22


Source: https://nhm2.uio.no/typephotos/lichens/arkiv/O-L-071802d.jpg
NORWAY, NORDLAND, SALTDAL: Saltd., ., Sommerfelt, S.C. - SYNTYPE