Stereocaulon botryosum Ach.
Lichenogr. Univ.: 581, 1810.
Synonyms: Stereocaulon alpinum var. botryosum (Ach.) Laurer; Stereocaulon evolutum var. fastigiatum (Anzi) Th. Fr.; Stereocaulon fastigiatum Anzi
Description: Primary thallus crustose-farinose, ephemeral, usually absent in mature individuals, secondary thallus fruticose, firmly attached to the rock, forming 1-2 cm broad cushions which are often subcrustose in central parts. Pseudopodetia with a solid cartilaginous axis of parallel hyphae surrounded by a lax medulla, erect, markedly rigid, 5-20(-30) mm high, 0.3-0.7(-1.5) mm thick at base, white with a pink tinge, ochraceous to brownish black at base, grey-tomentose in lower part, usually glabrous in upper part, the apical parts abundantly branched, becoming fastigiate. Phyllocladia crowded in the upper parts of pseudopodetia, granular-verruciform, glaucous white, often confluent, forming cauliflower-like masses. Cephalodia usually scarce and inconspicuous, 0.2-2 mm across, violet, often pruinose, with Nostoc or Stigonema. Apothecia rare, brown, 1-3 mm across, mostly terminal, with a convex disc and an indistinct proper margin. Proper exciple brownish yellow, of interwoven, more or less parallel hyphae; epithecium yellow-brown; hymenium colourless, the hymenial gel I- (but the asci reacting I+ blue); paraphyses more or less free, 1-1.5 µm thick, the apical cells clavate, 3-4.5 µm wide, with a dark cap; hypothecium colourless, dense, c. 40 µm high. Asci 4-6-spored, cylindrical-clavate, with a K/I+ blue outer layer and apical dome, and a central, K/I+ darker blue tube, Porpidia-type. Ascospores mainly 3-septate, hyaline, fusiform, 20-31 x 4-5 µm. Conidia 1-celled, hyaline, straight, 5-7 x 0.6-0.8 µm. Main photobiont: chlorococcoid. Spot tests: K+ yellow, C-, KC-, P-, UV-. Chemistry: atranorin and porphyrilic acid.
Growth form: Fruticose
Substrata: rocks
Photobiont: green algae other than Trentepohlia (primary); cyanobacteria, filamentous (e.g. Nostoc, Scytonema) (secundary, e.g. in cephalodia)
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: rare
Subalpine belt: very rare
Montane belt: absent
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 04
TSB 21112
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (16745)
2001/12/17
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (16745)
2001/12/17
phyllocladia
Pier Luigi Nimis - CC BY-SA 4.0
TSB 37418
Pier Luigi Nimis - CC BY-SA 4.0
TSB 37418
Pier Luigi Nimis - CC BY-SA 4.0
TSB 37418
Frey E. 1933. Cladoniaceae (unter Ausschluß ded Gattung Cladonia) und Umbilicariaceae. In: Rabenhrst’s Kryptogamenflora von Deutschland, Österreich und der Schweiz. 15: 1-208.
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (21112)
2001/12/07
Growth form: Fruticose
Substrata: rocks
Photobiont: green algae other than Trentepohlia (primary); cyanobacteria, filamentous (e.g. Nostoc, Scytonema) (secundary, e.g. in cephalodia)
Reproductive strategy: mainly sexual
Commonnes-rarity: (info)
Alpine belt: rare
Subalpine belt: very rare
Montane belt: absent
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 04
TSB 21112
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (16745)
2001/12/17
P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (16745)
2001/12/17
phyllocladia
Pier Luigi Nimis - CC BY-SA 4.0
TSB 37418
Pier Luigi Nimis - CC BY-SA 4.0
TSB 37418
Pier Luigi Nimis - CC BY-SA 4.0
TSB 37418
Frey E. 1933. Cladoniaceae (unter Ausschluß ded Gattung Cladonia) und Umbilicariaceae. In: Rabenhrst’s Kryptogamenflora von Deutschland, Österreich und der Schweiz. 15: 1-208.
