''Calamagrostis'' (reed grass or smallweed) is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

s in the grass

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Poaceae Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns an ...

, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' generally occur at higher elevations. These tufted

perennials A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also widel ...

usually have hairless narrow

leaves A leaf (plural, : leaves) is any of the principal appendages of a vascular plant plant stem, stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", wh ...

. The

ligule A ligule (from "strap", variant of ''lingula'', from ''lingua'' "tongue") is a thin outgrowth at the junction of leaf and leafstalk of many grasses (Poaceae) and sedges. A ligule is also a strap-shaped extension of the corolla, such as that of a ...

s are usually blunt. The

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...

forms a

panicle A panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit) be pedicellate (having a single stem per flower). The branches of a panicle are of ...

. Some may be reed-like. The plants may be

rhizomatous In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow hori ...

(underground stems with shoots), stoloniferous (with runners), or caespitose (growing in tufts or clumps). The bisexual

spikelet A spikelet, in botany, describes the typical arrangement of the flowers of grasses, sedges and some other Monocots. Each spikelet has one or more florets. The spikelets are further grouped into panicles or spikes. The part of the spikelet that ...

s have a single floret and generally they are purple or purple-brown. The spikelets are clustered into inflorescences, which usually develop in early- to mid-summer on long culms ( = stems). Many species of ''Calamagrostis'' are morphologically similar, but they generally occur in distinct habitats, and they have unique geographical distributions. Given the subtle distinctions between many closely related taxa, there are several species complexes that could benefit from additional systematic study. Even the generic boundaries of the genus are controversial. For example, species in the genus ''

Deyeuxia ''Deyeuxia'' is a genus of plants allied to the Poaceae Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the gras ...

'', distributed largely in the southern hemisphere are morphologically very similar to species of ''Calamagrostis''. It may be appropriate to recognize all of these species in a single genus, but this will require detailed scientific study of DNA of species from around the world. Some ''Calamagrostis'' can be very decorative, and are widely cultivated largely in northern

temperate In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout t ...

zones. The species ''Calamagrostis brachytricha'' and the cultivar ''Calamagrostis'' × ''acutiflora'' 'Karl Foerster' are recipients of the

Royal Horticultural Society The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity. The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr (Nort ...

Award of Garden Merit The Award of Garden Merit (AGM) is a long-established annual award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions. History The Award of Garden Merit ...

. The word "Calamagrostis" is derived from the

Greek Greek may refer to: Greece Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group. *Greek language, a branch of the Indo-European language family. **Proto-Greek language, the assumed last common ancestor ...

word ''kalamos'' (reed) and ''agrostis'' (a kind of grass).

Species

''Calamagrostis'' contains the following recognised species: *''

Calamagrostis abnormis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'' (Hook.f.) U.Shukla *''

Calamagrostis acuminata ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'' (Vickery) Govaerts * ''Calamagrostis'' × ''acutiflora'' (Schrad.) DC. *''

Calamagrostis affinis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'' (M.Gray) Govaerts *''

Calamagrostis ajanensis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'' Kharkev. & Prob. *''

Calamagrostis alajica ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'' Litv. *''

Calamagrostis alba ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'' (J.Presl) Steud. *''

Calamagrostis albiflora ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'' Vaniot *'' Calamagrostis altaica'' Tzvelev *'' Calamagrostis amoena'' (Pilg.) Pilg. *'' Calamagrostis ampliflora'' Tovar * ''Calamagrostis'' × ''andrejewii'' Litv. *'' Calamagrostis angustifolia'' Kom. *'' Calamagrostis anthoxanthoides'' (Munro) Regel *'' Calamagrostis appressa'' (Vickery) Govaerts *'' Calamagrostis archboldii'' Hitchc. *''

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

'' (L.) Roth *'' Calamagrostis atjehensis'' Ohwi *'' Calamagrostis aurea'' (Munro) Hack. ''ex'' Sodiro *'' Calamagrostis australis'' (Moritzi) Buse *'' Calamagrostis austrodensa'' Govaerts *'' Calamagrostis austroscaberula'' Govaerts *''

Calamagrostis autumnalis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Koidz. *''

Calamagrostis avenoides ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Hook.f.) Cockayne * ''Calamagrostis'' × ''badzhalensis'' Prob. *'' Calamagrostis baicalensis'' (Litv.) Steph. ''ex'' Komarov *'' Calamagrostis balkharica'' P.A.Smirn. *'' Calamagrostis benthamiana'' (Vickery) Govaerts * ''Calamagrostis'' × ''bihariensis'' Simonk. *'' Calamagrostis bogotensis'' (Pilg.) Pilg. *'' Calamagrostis bolanderi'' Thurb. *'' Calamagrostis boliviensis'' Hack. *'' Calamagrostis borii'' Tzvelev *'' Calamagrostis boyacensis'' Swallen & Garc.-Barr. *'' Calamagrostis brachyathera'' (Stapf) Govaerts *'' Calamagrostis brassii'' Hitchc. *'' Calamagrostis breviaristata'' (Wedd.) Pilg. *''

Calamagrostis brevifolia ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (J.Presl) Steud. *'' Calamagrostis breweri'' Thurb. *''

Calamagrostis cabrerae ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Parodi *'' Calamagrostis cainii'' Hitchc. *'' Calamagrostis calderillensis'' Pilg. *''

Calamagrostis canadensis ''Calamagrostis canadensis'' is a species of grass, having three or more varieties, in the family Poaceae. It is known variously by the common names of bluejoint, bluejoint reedgrass, marsh reedgrass, Canadian reedgrass, meadow pinegrass, and m ...

'' (Michx.) P.Beauv. *''

Calamagrostis canescens ''Calamagrostis canescens'', known as purple small-reed, is a species of grass in the family Poaceae, native to Europe and western Siberia Siberia ( ; rus, Сибирь, r=Sibir', p=sʲɪˈbʲirʲ, a=Ru-Сибирь.ogg) is an extensive ge ...

'' (Weber) Roth *'' Calamagrostis carchiensis'' Laegaard *'' Calamagrostis carinata'' (Vickery) Govaerts *''

Calamagrostis caucasica ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family (biology), family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calam ...

'' Trin. *'' Calamagrostis cephalantha'' Pilg. *'' Calamagrostis chalybaea'' (Laest.) Fr. *'' Calamagrostis chaseae'' Luces *'' Calamagrostis chilensis'' Phil. *'' Calamagrostis chrysantha'' (J.Presl) Steud. *'' Calamagrostis chrysophylla'' (Phil.) Govaerts *'' Calamagrostis cleefii'' Escalona *'' Calamagrostis clipeata'' Vaniot *''

Calamagrostis coahuilensis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' P.M.Peterson, Soreng & Valde´s-Reyna *'' Calamagrostis coarctata'' Eaton *'' Calamagrostis conferta'' (Keng) P.C.Kuo & S.L.Lu * ''Calamagrostis'' × ''conwentzii'' Ulbr. *''

Calamagrostis cordechii ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Govaerts *'' Calamagrostis crassiuscula'' (Vickery) Govaerts *''

Calamagrostis crispa ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Rugolo & Villav.) Govaerts *'' Calamagrostis cryptolopha'' (Wedd.) Hitchc. *'' Calamagrostis curta'' (Wedd.) Hitchc. *'' Calamagrostis curtoides'' (Rugolo & Villav.) Govaerts *'' Calamagrostis curvula'' (Wedd.) Pilg. *''

Calamagrostis cuzcoensis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Tovar * ''Calamagrostis'' × ''czerepanovii'' Husseinov *''

Calamagrostis debilis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Hook.f. *''

Calamagrostis decipiens ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (R.Br.) Govaerts *''

Calamagrostis decora ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'' Hook.f. *'' Calamagrostis densiflora'' (J.Presl) Steud. *'' Calamagrostis deschampsiiformis'' C.E.Hubb. *''

Calamagrostis deschampsioides ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Trin. *'' Calamagrostis deserticola'' (Phil.) Phil. *''

Calamagrostis diemii ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Rúgolo) Soreng *''

Calamagrostis diffusa ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Keng) Keng f. *'' Calamagrostis distantifolia'' Luchnik *'' Calamagrostis divaricata'' P.M.Peterson & Soreng *'' Calamagrostis divergens'' Swallen *'' Calamagrostis dmitrievae'' Tzvelev *'' Calamagrostis drummondii'' (Steud.) Govaerts *'' Calamagrostis ecuadoriensis'' Laegaard *''

Calamagrostis effusa ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family (biology), family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calam ...

'' (Kunth) Steud. *'' Calamagrostis effusiflora'' (Rendle) P.C.Kuo & S.L.Lu ''ex'' J.L.Yang *'' Calamagrostis elatior'' (Griseb.) A.Camus *'' Calamagrostis eminens'' (J.Presl) Steud. *'' Calamagrostis emodensis'' Griseb. *''

Calamagrostis epigejos ''Calamagrostis epigejos'', common names wood small-reed or bushgrass, is a species of grass in the family Poaceae which is native to Eurasia and Africa. It is found from average moisture locales to salt marsh and wet habitats.

'' (L.) Roth *'' Calamagrostis erectifolia'' Hitchc. *'' Calamagrostis eriantha'' (Kunth) Steud. *'' Calamagrostis expansa'' (Munro ''ex'' Hillebr.) Hitchc. *'' Calamagrostis fauriei'' Hack. *'' Calamagrostis fibrovaginata'' Laegaard *''

Calamagrostis fiebrigii ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Pilg. *'' Calamagrostis filifolia'' Merr. *'' Calamagrostis filipes'' (Keng) P.C.Kuo & S.L.Lu ''ex'' J.L.Yang *''

Calamagrostis flaccida ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'' Keng f. *''

Calamagrostis foliosa ''Calamagrostis foliosa'' is a species of grass known by the common name leafy reedgrass. It is endemic to northern California, where it grows in the forests and scrub on the coastline. Description ''Calamagrostis foliosa'' is perennial bunchgr ...

'' Kearney *'' Calamagrostis frigida'' (Benth.) Maiden & Betche *''

Calamagrostis fulgida ''Calamagrostis fulgida'' is a species of grass in the family Poaceae. It is found only in Ecuador Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, ...

'' Laegaard *'' Calamagrostis fulva'' (Griseb.) Kuntze *'' Calamagrostis fuscata'' (J.Presl) Steud. *'' Calamagrostis gayana'' (Steud.) Soreng *''

Calamagrostis gigas ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Takeda *''

Calamagrostis glacialis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Wedd.) Hitchc. *''

Calamagrostis griffithii ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Bor) G.Singh *'' Calamagrostis guamanensis'' Escalona *'' Calamagrostis guatemalensis'' Hitchc. *''

Calamagrostis gunniana ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Nees) Reeder *'' Calamagrostis hackelii'' Lillo ''ex'' Stuck. *''

Calamagrostis hakonensis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'' Franch. & Sav. * ''Calamagrostis'' × ''hartmaniana'' Fr. * ''Calamagrostis'' × ''haussknechtiana'' Torges *'' Calamagrostis hedbergii'' Melderis *'' Calamagrostis henryi'' (Rendle) P.C.Kuo & S.L.Lu ''ex'' J.L.Yang *'' Calamagrostis heterophylla'' (Wedd.) Pilg. *'' Calamagrostis hieronymi'' Hack. *''

Calamagrostis hillebrandii ''Calamagrostis hillebrandii'' is a species of grass in the family Poaceae known commonly as Hillebrand's reedgrass. It is endemic to Maui in Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in t ...

'' (Munro ''ex'' Hillebr.) C.L.Hitchc. *'' Calamagrostis hirta'' (Sodiro ''ex'' Mille) Laegaard *'' Calamagrostis holciformis'' Jaub. & Spach *'' Calamagrostis holmii'' Lange *'' Calamagrostis howellii'' Vasey *'' Calamagrostis hupehensis'' (Rendle) Chase *''

Calamagrostis imbricata ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Vickery) Govaerts *''

Calamagrostis inaequalis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Vickery) Govaerts *''

Calamagrostis inexpansa ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' A.Gray *''

Calamagrostis insperata ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Swallen *''

Calamagrostis intermedia ''Calamagrostis intermedia'' is a species of grass in the family Poaceae. It is native to South America, growing in high elevation grasslands and forest clearings. Its range extends from Colombia to Argentina. Description ''Calamagrostis interm ...

'' (J.Presl) Steud. *''

Calamagrostis involuta ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Swallen *''

Calamagrostis jamesonii ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Steud. *'' Calamagrostis kalarica'' Tzvelev *'' Calamagrostis kengii'' T.F.Wang *'' Calamagrostis killipii'' Swallen *'' Calamagrostis koelerioides'' Vasey *'' Calamagrostis kokonorica'' Keng ''ex'' Tzvelev *'' Calamagrostis korotkyi'' Litv. *'' Calamagrostis korshinskyi'' Litv. * ''Calamagrostis'' × ''kotulae'' Zapal. * ''Calamagrostis'' × ''kuznetzovii'' Tzvelev *'' Calamagrostis lahulensis'' G.Singh *''

Calamagrostis lapponica ''Calamagrostis lapponica'', the Lappland reedgrass, is a grass species native to colder parts of the Northern Hemisphere. It has been reported from Scandinavia, Russia, Greenland, Alaska, and every Canadian province and territory except the Mari ...

'' (Wahlenb.) Hartm. *'' Calamagrostis lawrencei'' (Vickery) Govaerts *'' Calamagrostis leiophylla'' (Wedd.) Hitchc. *'' Calamagrostis leonardii'' Chase *'' Calamagrostis levipes'' (Keng) P.C.Kuo & S.L.Lu ''ex'' J.L.Yang *''

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

'' Hand.-Mazz. *'' Calamagrostis ligulata'' (Kunth) Hitchc. *''

Calamagrostis linifolia ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Govaerts *'' Calamagrostis llanganatensis'' Laegaard *''

Calamagrostis longiseta ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Hack. *''

Calamagrostis macbridei ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Tovar *''

Calamagrostis macilenta ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Griseb.) Litv. *'' Calamagrostis macrophylla'' (Pilg.) Pilg. *'' Calamagrostis malamalensis'' Hack. ''ex'' Stuck. *''

Calamagrostis mandoniana ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Wedd.) Pilg. *''

Calamagrostis matsumurae ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Maxim. *''

Calamagrostis mckiei ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Vickery) Govaerts *'' Calamagrostis menhoferi'' Govaerts *'' Calamagrostis mesathera'' (Vickery) Govaerts *''

Calamagrostis microseta ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Vickery) Govaerts *'' Calamagrostis minarovii'' Hüseyin *'' Calamagrostis minima'' (Pilg.) Tovar *'' Calamagrostis minor'' (Benth.) J.M.Black *''

Calamagrostis mollis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family (biology), family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calam ...

'' Pilg. *''

Calamagrostis montanensis ''Calamagrostis montanensis'' is a species of grass known by the common names plains reedgrass and prairie reedgrass. It is native to North America, where it is found across Canada from British Columbia to Manitoba and south to Colorado in the Un ...

'' (Scribn.) Scribn. ''ex'' Vasey *'' Calamagrostis moupinensis'' Franch. *'' Calamagrostis muiriana'' B.L.Wilson & Sami Gray *''

Calamagrostis mulleri ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Luces *'' Calamagrostis munroi'' Boiss. *''

Calamagrostis nagarum ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Bor) G.Singh *'' Calamagrostis nardifolia'' (Griseb.) Hack. ''ex'' Stuck. *''

Calamagrostis neesii ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Steud. *'' Calamagrostis neocontracta'' Govaerts *'' Calamagrostis niitakayamensis'' Honda *'' Calamagrostis ningxiaensis'' D.Z.Ma & J.N.Li *''

Calamagrostis nitidula ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Pilg. *'' Calamagrostis nivicola'' (Hook.f.) Hand.-Mazz. *''

Calamagrostis nudiflora ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Vickery) Govaerts *''

Calamagrostis nutkaensis ''Calamagrostis nutkaensis'' is a species of grass known by the common names Pacific reedgrass and Nootka reedgrass. It is native to western North America from Alaska to central California, where it is mainly a coastal species growing in moist a ...

'' (J.Presl) Steud. *'' Calamagrostis obtusata'' Trin. *''

Calamagrostis ophitidis ''Calamagrostis ophitidis'', the serpentine reedgrass, is a species of bunch grass in the family Poaceae. It is endemic to California, where it grows in the serpentine soils of the mountain slopes north of the San Francisco Bay Area. Descripti ...

'' (Howell) Nygren *'' Calamagrostis orbignyana'' (Wedd.) Pilg. *'' Calamagrostis orizabae'' (Rupr. ''ex'' E.Fourn.) Beal *'' Calamagrostis ovata'' (J.Presl) Steud. * ''Calamagrostis'' × ''paradoxa'' Lipsky *''

Calamagrostis parsana ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

Calamagrostis porteri ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' A.Gray * ''Calamagrostis'' × ''prahliana'' Torges *'' Calamagrostis preslii'' (Kunth) Hitchc. *'' Calamagrostis pringlei'' Beal *'' Calamagrostis przevalskyi'' Tzvelev * ''Calamagrostis'' × ''pseudodeschampsioides'' Tzvelev *''

Calamagrostis pseudophragmites ''Calamagrostis pseudophragmites'' is a species of grass in the genus ''Calamagrostis'' and the family Poaceae Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses ...

'' (Haller f.) Koeler *''

Calamagrostis pungens ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Tovar *''

Calamagrostis purpurascens ''Calamagrostis purpurascens'', is a perennial grass commonly known as purple reedgrass, purple pinegrass, or alpine reedgrass. It grows 30 to tall. Description ''Calamagrostis purpurascens'' is a large, clump forming, perennial grass; growing ...

'' R.Br. *'' Calamagrostis purpurea'' (Trin.) Trin. *'' Calamagrostis pusilla'' Reeder *''

Calamagrostis quadriseta ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'' (Labill.) Spreng. *''

Calamagrostis radicans ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'' Vaniot *'' Calamagrostis ramonae'' Escalona *'' Calamagrostis rauhii'' Tovar *'' Calamagrostis recta'' (Kunth) Trin. ''ex'' Steud. *''

Calamagrostis reflexa ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' genera ...

'' (Vickery) Govaerts *'' Calamagrostis reitzii'' Swallen * ''Calamagrostis'' × ''rigens'' Lindgr. *''

Calamagrostis rigescens ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (J.Presl) Scribn. *'' Calamagrostis rigida'' (Kunth) Trin. ''ex'' Steud. *'' Calamagrostis rodwayi'' (Vickery) Govaerts *'' Calamagrostis rosea'' (Griseb.) Hack. *''

Calamagrostis rubescens ''Calamagrostis rubescens'' is a species of grass known by the common name pinegrass. Distribution It is native to western North America, including Canada from British Columbia to Manitoba and the United States from California to Colorado. It ca ...

'' Buckley *'' Calamagrostis rupestris'' Trin. *'' Calamagrostis sachalinensis'' F.Schmidt *'' Calamagrostis sajanensis'' Malyschev *'' Calamagrostis salina'' Tzvelev *'' Calamagrostis scaberula'' Swallen *''

Calamagrostis scabrescens ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Griseb. *''

Calamagrostis scabriflora ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Swallen *'' Calamagrostis sclerantha'' Hack. *'' Calamagrostis sclerophylla'' (Stapf) Hitchc. *'' Calamagrostis scopulorum'' M.E.Jones *''

Calamagrostis scotica ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Druce) Druce *'' Calamagrostis sesquiflora'' (Trin.) Tzvelev *''

Calamagrostis setiflora ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Wedd.) Pilg. *''

Calamagrostis sichuanensis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' J.L.Yang *'' Calamagrostis sikangensis'' (Keng) P.C.Kuo & S.L.Lu ''ex'' J.L.Yang *''

Calamagrostis sinelatior ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Keng) P.C.Kuo & S.L.Lu ''ex'' J.L.Yang *'' Calamagrostis smirnowii'' Litv. ''ex'' Petrov *'' Calamagrostis spicigera'' (J.Presl) Steud. *'' Calamagrostis spruceana'' (Wedd.) Hack. ''ex'' Sodiro *''

Calamagrostis srilankensis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Davidse *'' Calamagrostis staintonii'' G.Singh *'' Calamagrostis stenophylla'' Hand.-Mazz. *'' Calamagrostis steyermarkii'' Swallen *'' Calamagrostis stolizkai'' Hook.f. *''

Calamagrostis stricta ''Calamagrostis stricta'', known as slim-stem small reed grass or narrow small-reed, is a species of bunchgrass in the family Poaceae of the Holarctic Kingdom. Description General description The species is perennial and caespitose with elonga ...

'' (Timm) Koeler * ''Calamagrostis' × ''strigosa'' (Wahlenb.) Hartm. *'' Calamagrostis subacrochaeta'' Nakai * ''Calamagrostis'' × ''subchalybaea'' Tzvelev * ''Calamagrostis'' × ''subepigeios'' Tzvelev *'' Calamagrostis sublanceolata'' Honda * ''Calamagrostis'' × ''submonticola'' Prob. * ''Calamagrostis'' × ''subneglecta'' Tzvelev *'' Calamagrostis suka'' Speg. *'' Calamagrostis tacomensis'' K.L.Marr & Hebda *'' Calamagrostis tarmensis'' Pilg. *''

Calamagrostis tashiroi ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Ohwi * ''Calamagrostis'' × ''tatianae'' Prob. *'' Calamagrostis teberdensis'' Litv. *'' Calamagrostis teretifolia'' Laegaard *''

Calamagrostis tianschanica ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' Rupr. *'' Calamagrostis tibetica'' (Bor) Tzvelev *'' Calamagrostis tolucensis'' (Kunth) Trin. ''ex'' Steud. * ''Calamagrostis'' × ''torgesiana'' Hausskn. *''

Calamagrostis trichodonta ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Wedd.) Soreng *'' Calamagrostis turkestanica'' Hack. *''

Calamagrostis tweedyi ''Calamagrostis tweedyi'', the Cascade reedgrass or Tweedy's reedgrass, is a perennial in the grass family. It is native to the Pacific Northwest in the United States, in Washington, Oregon, Idaho, and Montana. Taxonomy Cascade reedgrass was fir ...

'' (Scribn.) Scribn. *'' Calamagrostis tzvelevii'' Hüseyin * ''Calamagrostis'' × ''uralensis'' Litv. * ''Calamagrostis'' × ''ussuriensis'' Tzvelev *'' Calamagrostis valida'' Sohns *''

Calamagrostis varia ''Calamagrostis varia'' is a species of flowering plant from the family Poaceae which is native to Europe. Description The species is perennial and caespitose with short rhizomes and erect culms which are long. It ligule have an eciliate membr ...

'' (Schrad.) Host * ''Calamagrostis'' × ''vassiljevii'' Tzvelev *'' Calamagrostis velutina'' (Nees & Meyen) Steud. *'' Calamagrostis veresczaginii'' Zolot. *''

Calamagrostis vicunarum ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' (Wedd.) Pilg. *''

Calamagrostis villosa ''Calamagrostis villosa'' is a species of flowering plant from the family Poaceae which is native to Europe. Description The species is perennial and caespitose with short rhizomes and long culms. It ligule have an eciliate membrane which is ...

'' (Chaix) J.F.Gmel. * ''Calamagrostis'' × ''vilnensis'' Besser *'' Calamagrostis violacea'' (Wedd.) Hack. *'' Calamagrostis viridiflavescens'' (Poir.) Steud. *'' Calamagrostis viridis'' (Phil.) Soreng *'' Calamagrostis vulcanica'' Swallen *'' Calamagrostis yanyuanensis'' J.L.Yang * ''Calamagrostis'' × ''yatabei'' Maxim. *'' Calamagrostis youngii'' (Hook.f.) Buchanan *'' Calamagrostis zenkeri'' (Trin.) Davidse * ''Calamagrostis'' × ''zerninensis'' Lüderw.

References

External links

Grass Genera of the World
{{Taxonbar, from=Q161134 Poaceae genera