Lichenomphalia velutina (Quél.) Redhead, Lutzoni, Moncalvo & Vilgalys

Mycotaxon, 83: 43, 2002. Basionym: Omphalia velutina Quél. Comptes Rend. Ass. Franc. Avanc. Sci.: tab. 12 - 1885.
Synonyms: Botrydina velutina (Quél.) Redhead & Kuyper; Botrydina vulgaris Bréb. p.p.; Lichenomphalia grisella; Omphalia grisella P. Karst.; Omphalina grisella (P. Karst.) M.M. Moser; Omphalina pseudandrosacea auct. non (Bull.) M.M. Moser; Omphalina rustica auct.; Omphalina velutina (Quél.) Quél.; Phytoconis pararustica (Clémençon) P. Roux & P.A. Moreau; Phytoconis velutina (Quél.) Redhead & Kuyper
Distribution: N - Ven (Onofri & al. 2013), TAA (Nascimbene 2013, Onofri & al. 2013), Lomb (Gaggianese & al. 1999, Onofri & al. 2013), Emil (Onofri & al. 2013, Fariselli & al. 2020). C - Tosc (Monti & al. 1999, Onofri & al. 2013), Sar (Onofri & al. 2013). S - Camp (Violante & al. 2002, Onofri & al. 2013).
Description: Thallus crustose, episubstratic, forming a soft, gelatinous (when wet), green to dark green film made of spherical granules consisting of clumps of algal cells incompletely surrounded by 2-3 µm thick, appressed pseudoparenchymatous hyphae. Clamp connections absent in all hyphae. Basidiocarps not lichenized, with an umbilicate, 0.5-1.3 cm wide, dark brown to grey brown (darker in the central depression), omphaloid, marginally striate cap, much paler, at first white to grey-white, finally often brownish, shortly decurrent lamellae, and a 1.5-3 cm high, 1-3 mm thick stipe which is more or less concolourous with cap, and often pubescent at base. Basidia clavate, mostly with 2 sterigmata. Basidiospores 1-celled, hyaline, ellipsoid, (6-)7-10 x (3-)4-5(-6) µm, thin-walled. Photobiont chlorococcoid. Spot tests: all negative. Chemistry: thallus without lichen substances.
Note: on acid soil, often in clearings of Pinus-stands; known only from Europe (Swiss, Austrian and Italian Alps) and North America.
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: absent
Subalpine belt: extremely rare
Oromediterranean belt: absent
Montane belt: extremely rare
Submediterranean belt: extremely rare
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:

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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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Predictive model
Herbarium samples

Einar Timdal - Source: http://nhm2.uio.no/lav/web/index.html - CC BY-NC



P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (18146)
2002/07/11


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/


Walter Obermayer CC BY-SA 4.0 - Source: Lichens of Noricum - http://lichens-of-noricum.uni-graz.at/