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Poa interior Rydb.
Common Name: BLUEGRASS
Synonym: Poa nemoralis
Coefficient of Conservatism: 10
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Nt P-Grass

Poa interior spikelets B. S. Walters spikelets

Included in P. nemoralis in Michigan Flora.

Shallow soil of rock outcrops and talus slopes; sand near Lake Superior.

This species is admitted tentatively to our flora as all Michigan specimens are somewhat transitional to Poa glauca. Collections are known from Pine Point Bluff, Marquette Co., a rocky talus slope on Drummond Island, Chippewa Co., and several locations in Keweenaw Co., including Isle Royale. Specimens differ from P. nemoralis as noted in the key, but are not a precise match for P. interior from farther west in the United States. More collections are needed. See notes under P. nemoralis and P. glauca.


Chippewa County
    Only on Drummond Island
Keweenaw County
    Including Isle Royale
Marquette County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. August 15, 2022. https://michiganflora.net/species.aspx?id=2197.