Leptorhaphis tremulae Körb.

Syst. Lich. Germ.: 372, 1855.
Synonyms: Campylacia tremulae (Körb.) A. Massal.; Leptorhaphis sphenospora (Nyl.) Arnold; Sagedia tremulae (Körb.) Anzi; Spermatodium tremulae (Körb.) Trevis.
Distribution: N - Ven, TAA, Lig (GDOR 254).
Description: Thallus inapparent, not lichenized, consisting of colourless hyphae. Perithecia black, matt, 0.13-0.25 mm across, circular, at first immersed in the substratum, then hemispherical to flattened and c. 0.05-0.07 mm high, the ostiole located centrally. Involucrellum dark brown to greenish black, c. 10-15 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 2-2.5 μm thick; hymenial gel I-. Asci 8-16-spored, clavate-ovoid, bi- and fissitunicate, with a broad, truncate apical beak, 40-66 x 18-25 μm. Ascospores 1-septate, hyaline, narrowly fusiform, arcuate, 13-25.5 x 3-4.5 μm. Photobiont absent. Spot tests: K-, C-, KC-, P-. Chemistry: without lichen substances.
Note: a non-lichenised saprobe growing on the smooth bark of Populus, especially P. tremula, more rarely of Salix. Earlier records from Southern Italy, being dubious, are not accepted here (see Nimis 1993: 418).
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: rare
Submediterranean belt: rare
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:

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Aridity:

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Eutrophication:

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Poleotolerance:

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Altitudinal distribution:

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Predictive model
Herbarium samples
Index Fungorum GBIF

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