Arrhenia retiruga
Can. J. Bot. 62(5): 873. 1984
Common Name: none
Synonym: Leptoglossum retirugum (Bull.) Ricken
For description see Reid.
Solitary to gregarious on moss, fall to spring. Common, but easily overlooked due to its small size.
Unknown.
Arrhenia retiruga is distinguished by its small size, pallid grayish coloration, lack of gills, and habitat on moss. Rimbachia bryophila, another small moss lover, is whitish in color and has gills typically with cross veins. Tiny Calyptella capula is whitish, funnel shaped with a smooth hymenium, growing on various herbaceous plants.
Barrasa, J.M. & Rico, V.J. (2003). The non-omphalinoid species of Arrhenia in the Iberian Peninsula. Mycologia 95(4): 700-713.
Bas, C., Kyper, T.W., Noordeloos, M.E. & Vellinga, E.C. (1995). Flora Agaricina Neerlandica—Critical monographs on the families of agarics and boleti occuring in the Netherlands. Volume 3. Tricholomataceae. A. A. Balkema: Rotterdam, Netherlands. 183 p.
Knudsen, H. & Vesterholt, J. ed. (2008). Funga Nordica: Agaricoid, boletoid and cyphelloid genera. Nordsvamp: Copenhagen, Denmark. 965 p.
Knudsen, H. & Vesterholt, J. ed. (2012). Funga Nordica: Agaricoid, boletoid, clavarioid, cyphelloid and gastroid genera. Vol. 1. Nordsvamp: Copenhagen, Denmark. 511 p.
Redhead, S.A. (1984). Arrhenia and Rimbachia, expanded generic concepts, and a reevaluation of Leptoglossum with emphasis on muscicolous North American taxa. Canadian Journal of Botany Can. J. Bot. 62(5): 865-892.
Reid, D.A. (1964). Notes on some fungi of Michigan—I. ‘Cypellaceae’. Persoonia 3: 97-154. (PDF)
Siegel, N. & Schwarz, C. (2016). Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.
