Fig 19. [Low Spear-Grass. Poa annua] L.
![[Low Spear-Grass. Poa annua]](#1525880611323293367_fig-019.jpg.id-4847359813362248102.wrap-0.html.html){kind=link}
Low Spear-Grass. Poa annua L. Florets straw-colored, 2.8–3.1 mm. long, apex smooth, lower half of keel and the base of lateral nerves, having numerous soft hairs. A low annual grass, introduced from Europe.
Fig 20. [Flat stemmed Poa. Wire Grass. Canadian Blue Grass. Poa compressa] L.
![[Flat stemmed Poa. Wire Grass. Canadian Blue Grass. Poa compressa]](#1525880611323293367_fig-020.jpg.id-5799355607682096977.wrap-0.html.html){kind=link}
Flat stemmed Poa. Wire Grass. Canadian Blue Grass. Poa compressa L. Florets lance-obovate, 2–2.5 mm. long, closely resembling those of Poa pratensis, which see.
Palea abruptly acute. If well rubbed after threshing, the floret is nearly smooth, otherwise it contains on the lower half numerous webby hairs. Grain reddish brown, both ends pointed, 1–1.4 mm. long. Seldom sown purposely. Sometimes used to adulterate Poa pratensis. In early days this grass was called blue grass by people of New England and New York State. Introduced from Europe.
