Fomitopsis cajanderi

Scientific name:   Fomitopsis cajanderi (P. Karst.) Kotl.
& Pouzar
Derivation of name:   Fomitopsis means having the
appearance of Fomes; cajanderi indicates the species is
named for Aimo Kaarlo Cajander, a forest ecologist who
also served as Prime Minister of Finland during several
periods of his life.
Synonymy:   Fomes subroseus (Weir) Overh., Trametes
Weir, Fomes cajanderi Karst.
Common names:   Rosy polypore.
Phylum:   Basidiomycota
Order:   Polyporales
Family:   Fomitopsidaceae
Occurrence on wood substrate:  Saprobic; solitary to
forming overlapping clusters on dead conifer wood, rarely
deciduous wood; year-round.
Dimensions: Caps 2.5-10 cm wide.    
Upper surface:  Pinkish-red to pinkish gray-brown in age;
finely hairy to glabrous; not cracked.
Pore surface: Rose colored, becoming reddish-brown; 4-5
pores per mm.
Edibility: Inedible.
Comments: See Bessette to distinguish from F. roseus
which is more hoof-shaped, more boreal or high elevation in
distribution, and has a cracked cap surface in age. The two
species differ microscopically in spore shape. Both are
perennial species.

More information at   

Figure 1. Sessile Fomitopsis cajanderi on a log.
Photo © Tom Volk.

Figure 2. Both upper and lower surfaces have a rosy color.
Photo © Larry Grand.

Figure 3. The rosy pore surface of a freshly collected
specimen of rosy polypore. Photo © Gary Emberger.


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This page © 2008 by Gary Emberger, Messiah College