Chromosera loreleiae Lodge, Redhead, & Mullineux
Phytotaxa 690 (1): 27. 2025.
Common Name: none
Misapplied name: Chromosera cyanophylla (Fries) Redhead, Ammirati and Norvell
Misapplied synonyms: Mycena lilacifolia (Peck) A. H. Smith; Omphalina lilacifolia (Peck) Murrill; Omphalina cyanophylla (Fr.) Quélet
Cap 1.0-2.5 cm broad at maturity, at first convex, becoming plano-convex, in age the disc broadly flattened, depressed or umbillicate; margin translucent-striate to near the disc, incurved in youth, then decurved, occasionally plane at maturity; surface glabrous, viscid, lavender to lilac, soon fading to yellowish or yellowish-tan; context thin, < 1 mm, pallid, unchanging; odor indistinct; taste mild.
Gills decurrent, subdistant, lavender, fading to pale-lilac, cream-colored in age; lamellulae in 2-series.
Stipe 1.0-2.5 cm long, 1.0-2.0 mm thick, fragile, hollow, more or less equal, sometimes sub-bulbous; surface glabrous, viscid, lavender, becoming yellowish to pale-tan in age, lavender-colored mycelium often at the base; partial veil absent.
Spores 6.0-7.5 x 3.0-3.5 µm, tear-shaped, smooth, thin-walled, hilar appendage not distinct, with numerous granular inclusions, inamyloid; spore print white.
Gregarious to clustered on or under the bark of conifer logs; fruiting commonly in late spring after snow melt in montane regions, occasional during the winter months in coastal forests.
Unknown; too small to be of culinary value.
Few fungi are prettier than this small, mycena-like snowbank mushroom. Early in development, it is a startling lavender, but soon fades to lilac and then yellowish. Collections from under bark often retain lavender-tints, thus make excellent photographic subjects. Compare with Chrysomphalina aurantiaca, a small, orange, lignicolous species with decurrent gills, distinguished by a moist, not viscid cap, and absence of lilac tones; Mycena epipterygia is a mushroom of coastal forests and is similar with a viscid, striate, cap, but the shape is typically umbonate, and the color more yellowish-olive to brown. Microscopically it is easily differentiated by amyloid spores.
Arora, D. (1986). Mushrooms Demystified. Ten Speed Press: Berkeley, CA. 959 p.
Castellano, M. A., Cázares, E., Fondrick, B. & Dreisbach, T. (2003). Handbook to additional fungal species of special concern in the Northwest Forest Plan (Gen. Tech Rep. PNW-GTR-572). U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: Portland, OR. 144 p. (PDF)
Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
Grootmyers, D., Mullineux, S.-T., Redhead, S.A., Bau, T., Horman, J., Kerner, R., Lebeuf, R., Sergeev, A., Tomko, P., Wasilewski, D., Ré, L.A., Hickey, S., Ness, S., Russell, S.D. & Lodge, D.J. (2025). Geographic distributions in Chromosera species—continental and oceanic barriers, including a new species, a new variety and a new combination. Phytotaxa 690(1): 17-35. (Protologue)
Knudsen, H. & Vesterholt, J. ed. (2008). Funga Nordica: Agaricoid, boletoid and cyphelloid genera. Nordsvamp: Copenhagen, Denmark. 965 p. (PDF)
Knudsen, H. & Vesterholt, J. ed. (2012). Funga Nordica: Agaricoid, boletoid, clavarioid, cyphelloid and gastroid genera. Vol. 1. 511 p.
Lodge, D.J., et al. (2013). Molecular phylogeny, morphology, pigment chemistry and ecology in Hygrophoraceae (Agaricales). Fungal Diversity (PDF).
Murrill, W.A. (1916). North American Flora: (Agaricales) Polyporaceae-Agaricaceae. 9(5): 297-374.
Redhead, S.A., Ammirati, J.F. & Norvell, L. (1995). Omphalina sensu lato in North America 3: Chromosera gen. nov. Sydowia Beih. 10: 155-167.
Redhead, S.A., Ammirati, J.F., Norvell, L.L., Vizzini, A. & Contu, M. (2011). Validation of combinations with basionyms published by Fries in 1861. Mycotaxon 118(1): 455-458.
Siegel, N. & Schwarz, C. (2016). Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.
Smith, A.H. (1947). North American Species of Mycena. University of Michigan Press: Ann Arbor, MI. 521 p.
Smith, A. H. (1949). Mushrooms in their Natural Habitats. Sawyer's Inc: Portland, OR. 626 p. (PDF)
