Abstract
Russula parvovirescens sp. nov. is described from the eastern United States. It is a rather common species that previously was mistaken for a small R. virescens or a green form of R. crustosa. The large and characteristic extremities that compose the pileipellis allow easy identification with the microscope or even with a good hand lens. The new species is described here, illustrated in detail and compared with R.virescens and R. crustosa.
The senior author thanks Rytas Vilgalys for his support and facilities offered while working at Duke. The authors are grateful to Glenn Boyd and David Lewis for access to their collections and to the curators of NYBG, DEWV, TENN and NYS for the loan of specimens. Ania Boyd is acknowledged for help with county references.