Catapyrenium daedaleum (Kremp.) Stein

in Cohn, Krypt.- Fl. von Schlesien, 2, 2: 312, 1879. Basionym: Endocarpon daedaleum Kremp. - Flora, 38: 66, 1855.
Synonyms: Dermatocarpon daedaleum (Kremp.) Th. Fr.; Endopyrenium daedaleum (Kremp.) Körb.; Placidiopsis daedalea (Kremp.) Creveld
Distribution: N - Frl (Tretiach & Hafellner 2000), Ven (Nimis 1994), TAA, Lomb, Piem (TSB 33717), VA (Piervittori & Isocrono 1999). C - Tosc (Benesperi 2007), Abr (Nimis & Tretiach 1999), Mol (Nimis & Tretiach 2004, Caporale & al. 2008), Sar. S - Camp (Nimis & Tretiach 2004), Cal (Puntillo 1996), Si.
Description: Thallus squamulose to subcrustose, heteromerous, brownish to brownish-greenish grey, often faintly pruinose, never darker at margin, thin. Squamules 1-4 mm broad, flattened, smooth, contiguous, not imbricate, usually forming a rosette-like thallus reaching 9 cm in diam., developing on a black hypothallus; marginal squamules often elongated, rounded, often somewhat concave at tips, always epruinose; edge of squamules crenulate, concolorous with upper surface. Lower surface dark, attached by dark rhizohyphae. Upper cortex thin, paraplectenchymatous, poorly delimited from the algal layer; medulla loose, of a mixture of elongated and spherical hyphae; lower cortex absent, the medulla becoming darker in lower part; rhizohyphae dark, 3-4(-4.5) µm thick. Perithecia laminal, pyriform, half immersed, not flattened, 0.2-0.3 mm across. Paraphyses absent, substituted by periphyses; perithecial wall colourless to brown, especially near the ostiole. Asci 8-spored, unitunicate, clavate, thin-walled, not or only slightly thickened at apex, without ocular chamber, the wall I-. Ascospores 1-celled, hyaline, clavate, thin-walled, (15-)17-22(-24) x (5-)6-8(-9) µm, biseriately arranged in the asci. Photobiont chlorococcoid. Spot tests: K-, C-, KC-, P-. Chemistry: no lichen substances.
Note: a boreal-montane to arctic-alpine, circumpolar species found on plant debris, mosses and bare, humus-rich soil on calciferous ground near or above treeline; perhaps less common than C. cinereum in the mountains of southern Italy.
Growth form: Squamulose
Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

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


pH of the substrata:

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5

Solar irradiation:

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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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5




P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (34547)
2002/01/18


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (26468)
2001/12/07