Calamagrostis × acutiflora, called feather reed-grass, is a naturally occurring hybrid species of grass in the genus Calamagrostis, occasionally found in Europe and Asia.[2] Its cultivar 'Karl Foerster' has gained the Royal Horticultural Society's Award of Garden Merit.[3]

Calamagrostis × acutiflora
'Overdam' cultivar
'Eldorado' cultivar
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Poales
Family:	Poaceae
Subfamily:	Pooideae
Genus:	Calamagrostis
Species:	C. × acutiflora
Binomial name
Calamagrostis × acutiflora (Schrad.) DC.[1]
Synonyms[2]
List Arundo × acutiflora Schrad. Arundo × agrostis Weber Arundo × pseudoarundinacea Schleich. ex Gaudin Arundo × splendida Schkuhr ex Steud. Arundo × subulata J.Gay ex Rchb. Calamagrostis × arundinacea Wibel Calamagrostis × subulata Dumort. Calamagrostis × subuliglumis Hartm. Calamagrostis × trinii Rupr. Calamagrostis × yatabei Maxim. Deyeuxia × acutiflora (Schrad.) P.Beauv. Deyeuxia × montana Boiss. Donax × acutiflorus (Schrad.) P.Beauv.

It is a hybrid of Calamagrostis arundinacea and Calamagrostis epigejos, both widespread Eurasian species.

References