Verrucaria collematodes Garov.

Tentam. Dispos. Lich. Langob.: 31, 1865.
Synonyms:
Description: Thallus crustose, episubstratic, subgelatinous when wet, cracked-areolate, well-delimited, brown-black to black when dry, dark brownish green when wet, epruinose, the areoles smooth, flat to convex, not blastidiate at margin. Cortex paraplectenchymatous; algal cells arranged in more or less vertical columns; medulla with a well developed, carbonaceous black basal layer. Perithecia black, 0.5-0.7 mm across, entirely immersed or slightly projecting, often laterally covered by thallus. Involucrellum adpressed to exciple, extending to the lowest part of the perithecium and merging with the black basal layer; exciple subglobose, 0.2-0.35 mm across, the wall dark brown; hamathecium of periphyses and periphysoids, interascal filaments absent; hymenial gel hemiamyloid, I+ red (I+ blue at very low concentrations of I), K/I+ blue. Asci 8-spored, clavate, I-, fissitunicate, the wall thickened above, with an ocular chamber, dehiscent by extrusion of an endotunica to form a delicate rostrum, Verrucaria-type. Ascospores 1-celled, hyaline, ellipsoid, 18-27 x 8-10 µm. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Pioneer species
Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Montane belt: rare
Dry submediterranean belt: rather rare
Humid submediterranean belt: very rare
Padanian area: very rare

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

Source: Servit, M 1949: Nove nebo mene zname druhy lisejnikove celedi Verrucariaceae. Species Verrucariacearum (Lichenes) novae vel minus cognitae. - Sbornik Narodniho Musea v Praze 5(9): 1-51. Tab.1 - Public Domain


G. Gibelli, in S. Garovaglio, 1865 Tentamen Dispositionis Methodicae Lichenum In Longobardia Nascentium. Mediolanum


Zschacke, H. (1934) Epigloeaceae, Verrucariaceae und Dermatocarpaceae. In: Dr. L. Rabenhorst‘s Kryptogamen-Flora, Band 9, Abt. 1, Teil 1. Akademische Verlagsgesellschaft, Leipzig, 695 pp. - Public Domain