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 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 (noticeable 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, IKI+ immediately red or blue slowly turning red; paraphyses (1-)1.5(-2) μm wide at mid-level, the apical cells barely expanded; subhymenium 20-30 μm high, IKI+ 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
