farwellii was published in An Illustrated Flora of the Northern United States (Britton & Brown), 1: 334.
Carex | Eucalyptus rossii | Carex sylvatica | Carex nigra | Carex lyngbyei | Carex leporina | Carex geyeri | Carex flacca | Carex echinata | The fungus forms ectomycorrhiza-like structures with the sedge ''Carex flacca | Radio Rossii | Carex utriculata | Carex rossii | Carex pilulifera | Carex otrubae | Carex inops | Carex emoryi | ''Carex binervis'' in its typical habitat, growing among ''Calluna |
Thread-leaved sedge, pussy-toes, Sierra lodgepole pine, and Ross sedge are found in drier uplands within or on the edge of the meadow.