Leptorhaphis epidermidis (Ach.) Th. Fr.

N. Acta Reg. Soc. Sci. Upsal., ser. 3, 3: 373, 1861. Basionym: Lichen epidermidis Ach. - Lichenogr. Suec. Prodr.: 16, 1799.
Synonyms: Arthopyrenia epidermidis (Ach.) A. Massal.; Arthopyrenia oxyspora (Nyl.) Mudd; Campylacia oxyspora (Nyl.) Anzi; Campylacia oxyspora f. fusispora (Garov.) Bagl. & Carestia; Leptorhaphis oxyspora (Nyl.) Körb.; Pyrenula oxyspora (Nyl.) Hepp; Sagedia oxyspora (Nyl.) Tuck.; Spermatodium oxysporum (Nyl.) Trevis.; Verrucaria epidermidis (Ach.) Ach.; Verrucaria oxyspora Nyl.
Distribution: N - Ven (Anzi, Lich. Rar. Ven. 126), TAA (Nascimbene & al. 2007b), Lomb, Piem, Lig.
Description: Thallus inapparent, not lichenized, but sometimes loosely associated with trentepohlioid algae around the perithecia. Perithecia black, numerous, 0.3-0.5 mm across, circular to ellipsoid, surrounded by a dark fringe, at first immersed, then hemispherical to flattened, 0.1-0.15 mm high, the central ostiole sometimes located in a small papilla. Involucrellum dark brown, c. 30 μm thick, extending beyond the perithecium in a basal fringe, composed of pieces of bark intermixed with greenish-black hyphae; exciple thin, poorly evident, pale throughout; pseudoparaphyses 1-2.5 μm thick; hymenial gel I+ pale orange. Asci 8-spored, clavate, bi- and fissitunicate, with a broad, truncate apical beak. Ascospores 1-septate, hyaline, narrowly fusiform, curved, 24-36 x 2-3.5 μm. Pycnidia back, immersed in the bark. Microconidia simple, hyaline, bacilliform, to 4 μm long; macroconidia simple, hyaline, fusiform-arcuate, c. 25 c 1.5-2 μm. Photobiont absent. Spot tests: K-, C- KC-, P-. Chemistry: without lichen substances.
Note: mostly on the smooth bark of Betula.
Growth form: Fungus
Substrata: bark
Reproductive strategy: mainly sexual
Pioneer species

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: very rare
Submediterranean belt: very rare
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model
Herbarium samples

P.L. Nimis CC BY-SA 4.0
TSB 28554

Zahlbruckner A. 1926. Lichenes (Flechten). In: Engler A. (ed.): Die natürlichen Pflanzenfamilien. 2nd ed., vol 8, W. Engelmann, Leipzig, 270 pp.

P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (28554)