Publication: Bull. Torrey Bot. Club 36: 533. 1909.
selected vouchers: WTU
Notes: FNA24: "Sphenopholis intermedia grows at 0–2500 m in wet to damp sites, sites that dry out after the growing season, and sites with clay soils that retain moisture. Restricted to the Flora region, it is found in forests, meadows, and waste places throughout most of the region other than the high arctic. It differs from Koeleria macrantha, with which it is sometimes confused, in its more open panicles and in having spikelets that disarticulate below the glumes."