What You Should Know
Galerina hypnorum is a species of agaric fungus in the family Hymenogastraceae. A variable and confused species definition by the leading authors having different interpretations. These species are extremely difficult to differentiate macroscopically they can be grouped with some confidence microscopically. Mounted in KOH, many of the basidiospores of G. hypnorum reveal characteristic "ears" caused by the loosening of the outermost wall layer. Spores of this type are said to be calyptrate and can be observed in several species of Galerina, such as G. cerina and G. sphagnicola. The basidiospores in the plate here were photographed partly in Melzer's Soltion and partly in KOH. Those in KOH clearly show the calyptra, while those in Melzer's Solution mostly do not.
In common with several other species of Galerina, the name G. hypnorum has been used for several similar but different mushrooms. Usage of the name is still not entirely settled.
Other names: Moss Bell.
Galerina hypnorum Mushroom Identification
The cap is 0.4–1.5 (2) cm in diameter, thin, initially conical, later conical-expanded, convex, convex-expanded. The surface of the cap is hygrophanous, bare, smooth, light ocher, ocher-red, light brown, and fades to grayish or dark cream when it dries.
The hymenophore is lamellar. Plates of medium density or thick, thin, wide, accreted, reddish, ochre-brown.
The stem is 1.5–4 cm high, 0.1–0.2 cm in diameter, cylindrical, capillary-like, sometimes thickened to the base, hollow, brittle, velvety above, covered with a white floury coating, below it is initially yellowish, light yellow or ocher yellowish, later reddish or brownish, smooth, thin-fibrous or bare.
The flesh is thin, brittle, brownish, or brownish, with a floury smell or without a pronounced smell.
Habitat and Distribution
It grows from August to the end of October, in forests, in open areas, among moss, on soil, and the remains of rotten wood.
8-14 * 4.5-9 μm, ovoid or spindle-oval in shape, with a smooth surface.
Galerina hypnorum Synonyms
Agaricus hypni Batsch, 1786 (basionym)
Agaricus hypnorum Schrank, 1789
Conocybe hypnorum (Schrank) Murrill, 1912
Galera hypnorum (Schrank) P. Kumm., 1871
Galera rubiginosa var. hypnorum (Schrank) Rick, 1938
Galerina subhypnorum (G.F. Atk.) Singer, 1973
Galerula hypni (Batsch) Murrill, 1917
Galerula hypnorum (Schrank) Madre, 1933
Galerula subhypnorum G.F. Atk., 1918
Photo 1 - Author: Poyt448, Peter Woodard (Creative Commons Attribution-Share Alike 4.0 International)
Photo 2 - Author: Igor (Igor_Yevdokimov) (Creative Commons Attribution-Share Alike 3.0 Unported)
Photo 3 - Author: Ian Dodd (kk) (www.kundabungkid.com) Australia (kundabungkid) (Creative Commons Attribution-Share Alike 3.0 Unported)
Photo 4 - Author: Christine Braaten (wintersbefore) (Creative Commons Attribution-Share Alike 3.0 Unported)
Photo 5 - Author: James Lindsey (Creative Commons Attribution-Share Alike 2.5 Generic)