Acarospora praeruptorum H. Magn.
Svensk bot. Tidskr. 18: 330, 1924.
Synonyms: Acarospora nitrophila var. praeruptorum (H. Magn.) Clauzade & Cl. Roux; Acarospora praeruptorum var. koerberi H. Magn.
Distribution:
Description: Thallus crustose, episubstratic, areolate-subsquamulose, the areoles (0.5-)1-2 mm wide, 0.4-0.6 mm thick, markedly stipitate, often imbricate, replicating by division, the upper surface dark to pale brown, smooth or rugulose, sometimes fissurate, epruinose or rarely faintly pruinose, the lower surface white especially in young areoles, or brown. Epicortex absent or thin; cortex usually 40-70 µm thick, rarely thinner in poorly developed specimens, the cells 2-6 µm wide, often arranged in a vertical pattern; algal layer 100-200 µm thick, with even or uneven upper surface, not interrupted by hyphal bundles but with occasional narrow, usually 10-20 µm wide strands of hyphae between the algal cells; medulla up to 500 µm thick, continuous with the stipe, usually obscure, of vertically to intricately arranged, 3-5 µm wide hyphae. Apothecia to 1.5 mm across, immersed, or elevated with a thalline margin. Proper exciple 20-30 µm wide; epithecium brown, c. 20 µm high; hymenium colourless, (85-)100-135 µm high, the hymenial gel hemiamyloid, IKI+ red; paraphyses mostly 2 µm wide with apices in 3-5 µm wide, brown gel caps; subhymenium 40-80 µm high, IKI+ blue; hypothecium 10-20 µm high. Asci >100-spored, clavate, the apical dome K/I-, 90-110 x 10-25 µm. Ascospores 1-celled, hyaline, ellipsoid, 3-5 x 1.5-2 µm. Photobiont chlorococcoid. Spot tests: cortex and medulla K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Note: a lichen of steeply inclined to rain-sheltered surfaces of volcanic rock, conglomerate rock, clay slate, and calciferous porphyry, known from several stations in Central Europe, with no certain record from Italy. The species has been often considered as a synonym of A. nitrophila H. Magn., but according to Knudsen & Kocourková (2017) and Knudsen & al. (n press) the two species are different.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
In underhangs rarely wetted by rain
Pioneer species
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent
Predictive model
Herbarium samples
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A2/Acarospora_praeruptorum.htm
France, Bonifacio, île de Cavallo, alt. 29 m - Corse
5/12/2014
Magnusson A. H. (1935) Acarosporaceae, Thelocarpaceae. - In: Rabenhorst G. L.: Kryptogamen-Flora von Deutschland, Österreich, und der Schweiz-. 2nd- IX. Die Flechten. Abt. 5- 1. Gebr. Borntraeger. Leipzig, pp. 1-318. – Public Domain
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A2/Acarospora_praeruptorum.htm
France, Bonifacio, île de Cavallo, alt. 29 m - Corse
5/12/2014
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A2/Acarospora_praeruptorum.htm
France, Bonifacio, île de Cavallo, alt. 29 m - Corse
5/12/2014
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A2/Acarospora_praeruptorum.htm
France, Bonifacio, île de Cavallo, alt. 29 m - Corse
5/12/2014
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A2/Acarospora_praeruptorum.htm
France, Bonifacio, île de Cavallo, alt. 29 m - Corse
5/12/2014
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A2/Acarospora_praeruptorum.htm
France, Bonifacio, île de Cavallo, alt. 29 m - Corse
5/12/2014
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A2/Acarospora_praeruptorum.htm
France, Bonifacio, île de Cavallo, alt. 29 m - Corse
5/12/2014
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
In underhangs rarely wetted by rain
Pioneer species
Commonnes-rarity: (info)
Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: absent
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent
Predictive model
| Herbarium samples |
Index Fungorum
GBIF
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A2/Acarospora_praeruptorum.htm
France, Bonifacio, île de Cavallo, alt. 29 m - Corse
5/12/2014
Magnusson A. H. (1935) Acarosporaceae, Thelocarpaceae. - In: Rabenhorst G. L.: Kryptogamen-Flora von Deutschland, Österreich, und der Schweiz-. 2nd- IX. Die Flechten. Abt. 5- 1. Gebr. Borntraeger. Leipzig, pp. 1-318. – Public Domain
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A2/Acarospora_praeruptorum.htm
France, Bonifacio, île de Cavallo, alt. 29 m - Corse
5/12/2014
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A2/Acarospora_praeruptorum.htm
France, Bonifacio, île de Cavallo, alt. 29 m - Corse
5/12/2014
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A2/Acarospora_praeruptorum.htm
France, Bonifacio, île de Cavallo, alt. 29 m - Corse
5/12/2014
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A2/Acarospora_praeruptorum.htm
France, Bonifacio, île de Cavallo, alt. 29 m - Corse
5/12/2014
Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_A/Textes_A2/Acarospora_praeruptorum.htm
France, Bonifacio, île de Cavallo, alt. 29 m - Corse
5/12/2014
