Pertusaria pentelici J. Steiner

Sitzungsber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1, 102: 155, 1893.
Synonyms: Melanaria pentelici (J. Steiner) Erichsen
Distribution:
Description: Thallus crustose, episubstratic, pale grey-brown, rather thick, rimose-areolate, the sterile areoles 0.5-1 mm wide, flat to slightly convex. Apothecia immersed into more or less clearly delimited, basally constricted, up to 3(-4) mm wide fertile warts, at first perithecioid, then with expanded discs which unite in discs of second order, surrounded by a thalline margin. Asci 2-spored, broadly cylindrical, the apex with a broad ocular chamber, the outer sheath K/I+ blue, otherwise K/I-, Pertusaria-type. Ascospores 1-celled, at first hyaline, but soon turning grey- or olive-black, ellipsoid, 110-160 x 45-95 µm, the wall 3-layered, the thin outer layer, K-, the inner 2 layers K+ violet-purple. Pycnidia black, immersed. Conidia needle-like, 11-14 x c. 0.5 µm. Photobiont chlorococcoid. Spot tests: thallus K+ yellow turning red, C- or C+ faintly pink, KC+ yellow-red, P+ yellow-orange, UV-. Chemistry: norstictic, gyrophoric and connorstictic acids.
Note: a rarely collected silicicolous species known from Greece and Bulgaria, from sea level to the montane belt. To be looked for in Southern Italy.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

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Predictive model


P.L. Nimis CC BY-SA 04
TSB 9406



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (9406)
2003/03/12


Erichsen C.F.E. 1936. Pertusariaceae. - In: Dr. L. Rabenhorsts Kryptogamenflora von Deutschland, Österreich und der Schweiz. Bd. IX, Abt. 5, T. 1. Akad. Verlagsges., Leipzig, pp. 321-512, 513-728. - Public Domain