Distribution

Cusick's bluegrass occurs from Alberta and Saskatchewan southward to
North Dakota, Colorado, Nevada, Utah, and California [13,15,35].

Distributions of subspecies are [13,35]:

Poa cusckii ssp. cusickii - central Washington east to central Idaho and south
to northern Nevada and east-central California
P. c. ssp. epilis - British Columbia and extreme western Saskatchewan
south to western Montana, eastern Idaho and the
Coast Ranges of Washington and Oregon; isolated populations
in the Cascade Range of Oregon and the Sierra Nevada
of California, and in northern Nevada, north-central
Wyoming, north-central Utah, and central Colorado
P. c. ssp. pallida - British Columbia east to Saskatchewan and south to
western North Dakota, northern Colorado, Utah, and
Nevada, and extreme eastern California
P. c. ssp. purpurascens - southern British Columiba through the Coast
Ranges to northern California; rare in the
Sierra Nevada