The cuticle is sometimes covered with fibres, or with a bloom upon it (pruinose).
"Among the Mushrooms" by Ellen M. Dallas and Caroline A. Burgin
Disk usually white- to rusty-green-pruinose 11.
"Ohio Biological Survey, Bull. 10, Vol. 11, No. 6" by Bruce Fink and Leafy J. Corrington
Pollen: a dusty or pruinose surface covering which is easily rubbed off; used mostly in Diptera.
"Explanation of Terms Used in Entomology" by John. B. Smith
Spring-shoots more or less pruinose, uninodal.
"The Genus Pinus" by George Russell Shaw
The gills are decurrent, distant, grayish-white, pruinose.
"The Mushroom, Edible and Otherwise" by M. E. Hard
P. rufous bay; g. reddish, pruinose; mild.
"European Fungus Flora: Agaricaceae" by George Massee