Rhizocarpon simillimum (Anzi) Lettau
Hedwigia, 52: 156, 1912. Basionym: Buellia simillima Anzi - Comm. Soc. Critt. Ital., 2, 1: 19, 1864.
Synonyms: Buellia subbadia Anzi; Catocarpus simillimus (Anzi) Arnold; Rhizocarpon atroalbum var. africanum Flagey; Rhizocarpon sublestum (Nyl.) Zahlbr.
Description: Thallus crustose, episubstratic, dark grey to dark brown, rimose-areolate, forming up to 8(-10) mm wide patches delimited by a dark prothallus, the areoles contiguous or scattered, rounded to angular, mostly flat, up to 0.3 mm in diam. Medulla white, I+ deep blue. Apothecia round to angular, 0.2-0.5(-0.8) mm across, with a more or less flat, epruinose disc and a thin, usually persistent, sometimes finally excluded proper margin. Proper exciple brownish black in outer part, paler within, K+ purple-red (solution); epithecium brown to brown-black, without crystals, K- or K+ faintly purple-red; hymenium colourless, 70-85 µm high; hypothecium dark brown, K+ purple-red. Asci 8-spored, clavate, fissitunicate, with a well-developed tholus that is K/I- in lower part and K/I+ blue near the apex, lacking an ocular chamber, Rhizocarpon-type. Ascospores 1-septate, soon dark brown-black, ellipsoid, 10-16 x 5-8 µm, halonate at least when young. Photobiont chlorococcoid. Spot tests: medulla K- or K+ pale yellow, C-, KC-, P- or P+ faintly yellow-orange. Chemistry: without lichen substances, or with variable amounts of stictic acid.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: rare
Subalpine belt: rather common
Montane belt: rare
Dry submediterranean belt: absent
Humid submediterranean belt: absent
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
Einar Timdal - Source: http://nhm2.uio.no/lav/web/index.html - CC BY-NC
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: rare
Subalpine belt: rather common
Montane belt: rare
Dry submediterranean belt: absent
Humid submediterranean belt: absent
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
