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

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

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 group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Poaceae, 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. The ligules are usually blunt. The

inflorescence An inflorescence is a group or cluster of flowers arranged on a Plant stem, stem that is composed of a main branch or a complicated arrangement of branches. Morphology (biology), Morphologically, it is the modified part of the shoot of sperma ...

forms a panicle. 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 ho ...

(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 ...

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 (Nor ...

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

'' (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'' Parodi *'' Calamagrostis cainii'' Hitchc. *'' Calamagrostis calderillensis'' Pilg. *'' Calamagrostis canadensis'' (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'' 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'' 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'' Tovar * ''Calamagrostis'' × ''czerepanovii'' Husseinov *'' Calamagrostis debilis'' Hook.f. *'' Calamagrostis decipiens'' (R.Br.) Govaerts *'' Calamagrostis decora'' Hook.f. *'' Calamagrostis densiflora'' (J.Presl) Steud. *'' Calamagrostis deschampsiiformis'' C.E.Hubb. *'' Calamagrostis deschampsioides'' Trin. *'' Calamagrostis deserticola'' (Phil.) Phil. *'' Calamagrostis diemii'' (Rúgolo) Soreng *'' Calamagrostis diffusa'' (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'' (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'' Pilg. *'' Calamagrostis filifolia'' Merr. *'' Calamagrostis filipes'' (Keng) P.C.Kuo & S.L.Lu ''ex'' J.L.Yang *'' Calamagrostis flaccida'' Keng f. *'' Calamagrostis foliosa'' Kearney *'' Calamagrostis frigida'' (Benth.) Maiden & Betche *'' Calamagrostis fulgida'' Laegaard *'' Calamagrostis fulva'' (Griseb.) Kuntze *'' Calamagrostis fuscata'' (J.Presl) Steud. *'' Calamagrostis gayana'' (Steud.) Soreng *'' Calamagrostis gigas'' Takeda *'' Calamagrostis glacialis'' (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 ...

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'' (Vickery) Govaerts *'' Calamagrostis inexpansa'' A.Gray *'' Calamagrostis insperata'' Swallen *'' Calamagrostis intermedia'' (J.Presl) Steud. *'' Calamagrostis involuta'' Swallen *'' Calamagrostis jamesonii'' 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'' (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'' 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'' Tovar *'' Calamagrostis macilenta'' (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'' Maxim. *'' Calamagrostis mckiei'' (Vickery) Govaerts *'' Calamagrostis menhoferi'' Govaerts *'' Calamagrostis mesathera'' (Vickery) Govaerts *'' Calamagrostis microseta'' (Vickery) Govaerts *'' Calamagrostis minarovii'' Hüseyin *'' Calamagrostis minima'' (Pilg.) Tovar *'' Calamagrostis minor'' (Benth.) J.M.Black *'' Calamagrostis mollis'' 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'' (Bor) G.Singh *'' Calamagrostis nardifolia'' (Griseb.) Hack. ''ex'' Stuck. *'' Calamagrostis neesii'' 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'' (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 ...

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 ...

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 ...

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 elong ...

References

External links

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