Culms 10-50(70) cm, not disarticulating at maturity. Sheathsusually glabrous; blades 5-10 cm long, 1-3.5 mm wide, glabrous or slightly pilose. Inflorescences with (4)5-10 spikelets; branchesstiff, appressed or strongly ascending; lower branches with (1)2-3(5) spikelets; pedicels on the lowest branch shorter than the spikelets. Spikelets 11-15(19) mm. Calluses of middle floretslonger than wide, concave abaxially; lemma bodies 3-6 mm, glabrous over the back, densely pilose along the margins, teeth 1.5-2.5 mm, acute to acuminate or aristate; awns 6.5-8 mm; anthersusually tiny, sometimes to 4 mm. Caryopses (2)2.3-3 mm long, 0.7-1.1 mm wide. Cleistogenes rarely produced. 2n = 36, 98.
Danthonia intermedia grows in boreal and alpine meadows, open woods, and on rocky slopes and northern plains. Its range extends from Kamchatka, Russia, to North America, south along the cordillera, and east, through boreal and alpine regions, to Quebec and Newfoundland and Labrador. Its primarily cleistogamous reproduction has probably facilitated its establishment and spread through more boreal and alpine habitats than other members of the genus.
Tzvelev (1976) treats the American plants as Danthonia intermediaVasey subsp. intermedia and the Russian plants, which have 2n = 18, as Danthonia intermedia subsp. riabuschinskii (Kom.) Tzvelev.