Calamagrostis
Calamagrostis, or Small-reed or (Am.) Reedgrass, is a genus in the Grass family Poaceae with about 230 species that occur mainly in temperate regions of the Northern Hemisphere and the southern hemisphere. Towards equatorial latitudes, species of Calamagrostis generally occur at higher elevations in mountainous regions. These tufted perennials usually have hairless narrow leaves. The ligules are usually blunt. The inflorescence forms a panicle. Some may be reed-like.
The plants may be rhizomatous (underground stems with shoots), stoloniferous (with runners), or caespitose (growing in tufts or clumps).
The bisexual spikelets 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). Species of Calamagrostis can be very decorative; for example, in North America, a cultivar of Calamagrostis (Calamagrostis x acutiflora cv. Karl Foerster) is widely grown as an ornamental grass.
The word "Calamagrostis" is derived from the Greek word kalamos (reed) and agrostis (a kind of grass).
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, 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.
Species
Calamagrostis × acutiflora - Feather Reedgrass (hybrid Calamagrostis arundinacea × Calamagrostis epigeios)
Calamagrostis arundinacea - Rough Small-reed
Calamagrostis bolanderi - Bolander's Reedgrass
Calamagrostis breweri - Shorthair Reedgrass
Calamagrostis cainii - Cain's Reedgrass
Calamagrostis canadensis - Canadian Small-reed, Bluejoint, Bluejoint Reedgrass, Bluetop, Meadow Pinegrass, Canadian Reedgrass, Marsh Pinegrass, Marsh Reedgrass.
Calamagrostis canadensis var. canadensis (Michx.) Beauv.
Calamagrostis canadensis var. langsdorfii (Link) Inman bluejoint
Calamagrostis canadensis var. macouniana (Vasey) Stebbins bluejoint, Macoun's reedgrass
Calamagrostis canescens - Purple Small-reed
Calamagrostis chalybaea
Calamagrostis coarctata - Arctic Reedgrass
Calamagrostis deschampsioides - Circumpolar Reedgrass
Calamagrostis epigeios - Wood Small-reed, Bushgrass, Reed Bent
Calamagrostis epigeios ssp. macrolepis - Chee Reedgrass
Calamagrostis epigeios ssp. meinshausenii - Meinshausen's Reedgrass
Calamagrostis expansa - Maui Reedgrass
Calamagrostis foliosa - Leafy Reedgrass
Calamagrostis hillebrandii - Hillebrand's Reedgrass
Calamagrostis holmii - Holm's Reedgrass
Calamagrostis howellii - Howell's Reedgrass
Calamagrostis hyperborea - Northern Reedgrass
Calamagrostis inexpansa
Calamagrostis koelerioides - Fire Reedgrass
Calamagrostis × kolymensis - Kolymen Reedgrass
Calamagrostis lapponica - Lapland Reedgrass
Calamagrostis leonardii
Calamagrostis montanensis - Plains Reedgrass
Calamagrostis nutkaensis - Pacific Reedgrass
Calamagrostis ophitidis - Serpentine Reedgrass
Calamagrostis perplexa - Wood Reedgrass
Calamagrostis pickeringii - Pickering's Reedgrass
Calamagrostis porteri - Porter's Reedgrass
Calamagrostis pseudophragmites
Calamagrostis purpurascens - Purple Reedgrass
Calamagrostis purpurascens var. laricina - Purple Reedgrass
Calamagrostis purpurascens var. purpurascens - Purple Reedgrass
Calamagrostis rubescens - Pinegrass, Pine Reedgrass
Calamagrostis scopulorum - Ditch Reedgrass, Jones Reedgrass
Calamagrostis scotica - Scottish Small-reed, a rare species under protection by the UK Biodiversity Action Plan
Calamagrostis scribneri - a species of questionable taxonomic status, that has been recognized in western North America; according to ITIS, a synonym of Calamagrostis canadensis var. canadensis (Michx.) Beauv.
Calamagrostis sesquiflora - One-and-a-half Flower Reedgrass
Calamagrostis stricta - Narrow Small-reed, Narrowspike Reedgrass, Slim-stem Reed Grass, Slimstem Reedgrass
Calamagrostis stricta var. borealis - Boreal Reedgrass
Calamagrostis stricta var. stricta - Slimstem Reedgrass
Calamagrostis tweedyi - Tweedy's Reedgrass
Calamagrostis varia
Calamagrostis villosa
Translation
The word "Calamagrostis" occurs as such in the following languages: English, Catalan, Spanish, Portuguese.
Translation(s) in other languages: Czech: Třtina, Danish: Rørhvene, German: Reitgräser, Upper Sorbian: Smjelzyna, Georgian: ბრძამი, Lithuanian: Lendrūnas, Polish: Trzcinnik (roślina), Quechua: Pumachu, Finnish: Kastikat, Swedish: Rör (släkte), Ukrainian: Куничник.
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