Family Code: POACEA Genus Code: DESCH Genus CN: hairgrass Genus Authority: P. Beauv. Genus Summary: A genus of about 20-40 species, perennials and annuals, north and south temperate. Genus References: Barkworth in FNA (2007a); Tucker (1996)=Z. [also see Avenella] Last Updated: 2019-11-29 Publish: 1