Mycobilimbia olivacea Aragón, Sarrión & Hafellner

in Sarrión & al., Lichenologist, 35: 3, 2003.
Synonyms:
Description: Thallus crustose to subsquamulose, episubstratic, continuous, dark green to dark olive-brown, of more or less imbricate, 0.2-0.7(-l) mm wide, flat to convex, thinly corticate areoles with sinuate to lobulate margins. Apothecia lecideine to biatorine, 0.2-0.8(-l) mm across, sessile and more or less constricted at base, with a flat to convex, dark reddish brown disc, and a thin, finally excluded proper margin. Proper exciple 48-55 µm wide laterally, the outer part prosoplectenchymatous, reddish brown, of 6-8 µm wide cells, the inner part paler, with up to 13 µm wide cells; epithecium ochraceous brown, 5-12 µm high; hymenium colourless, 45-80 µm high; paraphyses sparingly branched and anastomosing, 1.5-2.5 µm thick at mid-level, the apical cells 3-4(-5) µm wide, with an orange-brown apical cap; hypothecium colourless, 50-70(-75) µm high, with photobiont cells in inner part. Asci 8-spored, clavate, with a thick, K/I + dark blue apical apparatus containing a K/I+ darker blue tubular pore. Ascospores 1-celled, hyaline, elongate to subcylindrical or ovoid, (9-)11-15(-17) x 5-6.5(-7.5) µm, with a smooth epispore. Photobiont chlorococcoid, the cells 5-9 µm in diam. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

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

pH of the substrata:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Rarity

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Source: Sarrión F.J., Aragon G. , Hafellner J., Rico V.J., Burgaz A.R. 2003. Two new species of Mycobilimbia from Spain. Lichenologist 35, 1: 1-10.
Spain