Chaenotheca gracilenta (Ach.) Mattsson & Middelb.
in Middelborg & Mattsson, Sommerfeltia 5: 45, 1987. Basionym: Calicium gracilentum Ach. - Lichenogr. Univ.: 243, 1810.
Synonyms: Coniocybe gracilenta (Ach.) Ach.; Cybebe gracilenta (Ach.) Tibell
Description: Thallus crustose, thinly episubstratic, farinose, grey-green. Apothecia long-stalked, pin-like, 2-3.5 mm high. Stalk slender and flexuose, 0.06-0.09 mm thick, black, but covered in a thin, grey, granular pruina, consisting of periclinally arranged, medium brown hyphae, the outermost layer disrupted into pruina-like granules. Capitulum spherical, 0.2-0.4 mm across, with a poorly developed exciple which is continuous with the stalk tissue. Mazaedium well-developed, pale grey; hypothecium medium brown, formed as a continuation of the stalk, c. 120-150 µm wide and 65-90 µm high. Asci ellipsoid, formed in chains from ascogenous hyphae without hooks, dissolving early. Ascospores 1-celled, very pale brown to almost hyaline, globose, 2.5-3 µm wide, with a smooth to slightly cracked wall. Photobiont chlorococcoid, with rectangular cells (Stichococcus). Spot tests: thallus K-, C-, KC-, P-. Chemistry: thallus with small amounts of several unidentified substances.
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
In underhangs rarely wetted by rain
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: extremely rare
Montane belt: very 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
P.L. Nimis CC BY-SA 4.0
TSB 6758
Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall
Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php (Courtesy: Anita Stridvall)
Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, Breitachklamm Oberallgäu
Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, Breitachklamm Oberallgäu
Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, Breitachklamm Oberallgäu
Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, Breitachklamm Oberallgäu
Growth form: Crustose
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
In underhangs rarely wetted by rain
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: extremely rare
Montane belt: very 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
P.L. Nimis CC BY-SA 4.0
TSB 6758
Leif Stridvall - Source: http://www.stridvall.se/lichens/gallery/
Courtesy: Anita Stridvall
Leif Stridvall - Source: http://www.stridvall.se/la/galleries.php (Courtesy: Anita Stridvall)
Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, Breitachklamm Oberallgäu
Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, Breitachklamm Oberallgäu
Wolfgang von Brackel - CC BY-4.0
Germany, Bavaria, Breitachklamm Oberallgäu
