Much like no. 8 [Festuca brachyphylla Schult. & Schult.f.]; sheaths open to the base; blades ca 0.5 mm wide, firm, the sclerenchyma forming a continuous, ±even band; infl more open and spreading; spikelets 5-7 mm, 3-8-fld; lemmas 3-3.5 mm; anthers 2-2.5 mm; 2n=14. Native of Europe, weedy and occasionally intr. in the ne. part of our range. In the past often interpreted broadly to include our spp. 7, 8, and 10.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.