Acarospora nitrophila H. Magn.
Göteborg. Vetensk.-och Vitter.-Handl., Ser. 4, 28, 2: 74, 1924.
Synonyms: Acarospora moraviae H. Magn.
Description: Thallus crustose, episubstratic, of dispersed or contiguous, sometimes substipitate 0.3-0.5(-1.4) mm wide and 0.3-0.6 mm thick, flat to slightly convex, sometimes lobulate areoles, the upper surface dark brown, red brown or pale brown, epruinose or rarely partially pruinose, sometimes minutely rugulose when wetted; lower surface partly white in young areoles, but usually pale brown to blackish brown. Epicortex lacking or <10 μm thick and giving areoles a shiny appearance; cortex 20-30(-40) μm thick, the upper layer dark brown and narrow, often one cell thick, the lower layer colourless, with round or variably shaped, mostly 3-6 μm wide, sometimes vertically arranged cells; algal layer 80-120 μm thick, not dense, relatively even, uninterrupted by hyphal bundles but with occasionally narrow strands of hyphae visible between the algal cells; medulla usually up to 400 μm thick, of thin-walled, branched, densely intricate to vertically arranged, 2-4(-5) μm thick hyphae with some round to irregular bloated and angular cells. Apothecia 1-10 per areole, 0.1-0.4(-0.5) mm across, immersed or semi-immersed, with a dull brown, usually epruinose disc, with or without an elevated thalline margin. Proper exciple to 15-30 μm wide, sometimes visible as a narrow parathecial ring; epithecium brownish, c. 10 μm high; hymenium colourless, (90-)100-130(-150) μm high, the hymenial gel hemiamyloid, I+ immediately red or blue slowly turning red; paraphyses (1-)1.5(-2) μm thick at mid-level, the apical cells barely expanded; subhymenium 20-30 μm high, I+ blue; hypothecium indistinct, to 20 μm high. Asci 100-200-spored, cylindrical to narrowly clavate, 80-120 x 10-20 μm. Ascospores 1-celled, hyaline, ellipsoid, 4-5 x (1.5-)2 μm, Pycnidia rare. Conidia simple, c. 1.5 x 0.7 μm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Growth form: Crustose
Substrata: rocks
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: very rare
Humid submediterranean belt: very rare
Padanian area: absent
pH of the substrata:
1 2 3 4 5
Solar irradiation:
1 2 3 4 5
Aridity:
1 2 3 4 5
Eutrophication:
1 2 3 4 5
Poleotolerance:
0 1 2 3
Altitudinal distribution:
1 2 3 4 5 6
Rarity
absent
extremely rare
very rare
rare
rather rare
rather common
common
very common
extremely common
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Occurrence data
Predictive map
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: Herb. J.Nascimbene
2003/03/31
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (29921)
2003/03/11
Growth form: Crustose
Substrata: rocks
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: very rare
Humid submediterranean belt: very rare
Padanian area: absent
pH of the substrata:
| 1 | 2 | 3 | 4 | 5 |
Solar irradiation:
| 1 | 2 | 3 | 4 | 5 |
Aridity:
| 1 | 2 | 3 | 4 | 5 |
Eutrophication:
| 1 | 2 | 3 | 4 | 5 |
Poleotolerance:
| 0 | 1 | 2 | 3 |
Altitudinal distribution:
| 1 | 2 | 3 | 4 | 5 | 6 |
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; Owner: Department of Life Sciences, University of Trieste
Herbarium: Herb. J.Nascimbene
2003/03/31
