Calamagrostis arundinacea
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Poales
Family:	Poaceae
Subfamily:	Pooideae
Genus:	Calamagrostis
Species:	C. arundinacea
Binomial name
Calamagrostis arundinacea (L.) Roth
Synonyms[1]
List Agrostis arundinacea L. Agrostis pseudoarundinacea Schleich. ex Gaudin Arundo agrostis Scop. Arundo clarionis Loisel. Arundo montana Gaudin Arundo sylvatica Schrad. Athernotus pyramidalis (Host) Dulac Calamagrostis abietina Schur Calamagrostis adpressiramea Ohwi Calamagrostis arundinacea subsp. adpressiramea (Ohwi) T.Koyama Calamagrostis arundinacea var. alpina (Schur) Serb. & Beldie Calamagrostis arundinacea var. austrojeholensis (Honda) Kitag. Calamagrostis arundinacea var. ciliata Honda Calamagrostis arundinacea subsp. distantiflora (Luchnik) Tzvelev Calamagrostis arundinacea subsp. heterogluma (Nakai) T.Koyama Calamagrostis arundinacea subsp. hymenoglossa (Ohwi) T.Koyama Calamagrostis arundinacea var. inaequata Honda Calamagrostis arundinacea var. ligulata (Rendle) Kitag. Calamagrostis arundinacea var. macrotricha Litv. Calamagrostis arundinacea subsp. monticola (Petrov ex Kom.) Tzvelev Calamagrostis arundinacea var. robusta Raclaru Calamagrostis arundinacea subsp. sugawarae (Ohwi) Tzvelev Calamagrostis arundinacea f. turfosa (Schur) Soó Calamagrostis austrojeholensis Honda Calamagrostis brachytricha Steud. Calamagrostis brachytricha var. ciliata (Honda) Ibaragi & H.Ohashi Calamagrostis chassanensis Prob. Calamagrostis clarionis (Loisel.) Loisel. Calamagrostis collina Franch. Calamagrostis formosana Hayata Calamagrostis henryi (Rendle) P.C.Kuo & S.L.Lu ex J.L.Yang Calamagrostis heterogluma (Nakai) Honda Calamagrostis hsinganensis (Kitag.) Kitag. Calamagrostis hupehensis (Rendle) Chase Calamagrostis hymenoglossa Ohwi Calamagrostis korotkyi subsp. monticola (Petrov ex Kom.) Vorosch. Calamagrostis licentiana Hand.-Mazz. Calamagrostis matsudana Honda Calamagrostis montana DC. Calamagrostis monticola Petrov ex Kom. Calamagrostis morrisonensis Hayata Calamagrostis nipponica Franch. & Sav. Calamagrostis parviflora Rupr. Calamagrostis pyramidalis Host Calamagrostis rariflora Schur Calamagrostis robusta Franch. & Sav. Calamagrostis sciuroides Franch. & Sav. Calamagrostis subalpina Schur Calamagrostis sublanceolata Honda Calamagrostis sugawarae Ohwi Cinna agrostoidea P.Beauv. Deyeuxia abietina (Schur) Fuss Deyeuxia ampla Keng Deyeuxia arundinacea (L.) Jansen Deyeuxia arundinacea var. borealis (Rendle) P.C.Kuo & S.L.Lu Deyeuxia arundinacea var. brachytricha (Steud.) P.C.Kuo & S.L.Lu Deyeuxia arundinacea var. ciliata (Honda) P.C.Kuo & S.L.Lu Deyeuxia arundinacea var. collina (Franch.) P.C.Kuo & S.L.Lu Deyeuxia arundinacea var. hirsuta (Hack.) P.C.Kuo & S.L.Lu Deyeuxia arundinacea var. latifolia (Rendle) P.C.Kuo & S.L.Lu Deyeuxia arundinacea var. ligulata (Rendle) P.C.Kuo & S.L.Lu Deyeuxia arundinacea var. robusta (Honda) P.C.Kuo & S.L.Lu Deyeuxia arundinacea var. sciuroides (Franch. & Sav.) P.C.Kuo & S.L.Lu Deyeuxia brachytricha (Steud.) D.M.Chang Deyeuxia formosana (Hayata) C.C.Hsu Deyeuxia henryi Rendle Deyeuxia hupehensis Rendle Deyeuxia matsudana (Honda) Keng Deyeuxia montana P.Beauv. Deyeuxia multiflora P.Beauv. ex Nyman Deyeuxia pyramidalis (Host) Veldkamp Deyeuxia pyramidalis var. borealis (Rendle) Q.X.Liu Deyeuxia pyramidalis var. ciliata (Honda) Q.X.Liu Deyeuxia pyramidalis var. ligulata (Rendle) Q.X.Liu Deyeuxia pyramidalis var. robusta Q.X.Liu Deyeuxia rariflora (Schur) Fuss Deyeuxia sciuroides (Franch. & Sav.) Keng Deyeuxia subalpina Schur Deyeuxia sylvatica Kunth Deyeuxia sylvatica var. borealis Rendle Deyeuxia sylvatica var. ciliata (Honda) Keng Deyeuxia sylvatica var. ligulata Rendle Donax montanus P.Beauv.

Calamagrostis arundinacea is a species of bunch grass in the family Poaceae, native to Eurasia, China and India.^[2] Under its synonym Calamagrostis brachytricha it has gained the Royal Horticultural Society's Award of Garden Merit.^[3]

The species is perennial and tufted with short rhizomes and erect culms that are 60–150 centimetres (24–59 in) long. Each leaf has a truncate ligule which is 2–4 millimetres (0.08–0.16 in) long, and obtuse. The leaf-blades are 8–50 mm (0.3–2.0 in) by 1.8–10 mm (0.07–0.39 in), hairless and have both a scabrous surface and an attenuate apex. The panicle has a scaberulous peduncle and is lanceolate, open, continuous, and is 8–18 cm (3.1–7.1 in) long by 1–4 cm (0.4–1.6 in) wide. Flowers have a pair of lodicules and stigmas, and three anthers which are 2.4–2.7 mm (0.09–0.11 in) long. The fruit is a caryopsis with an additional pericarp.^[2]