Calamagrostis, or even Microscopic-reed or even (Am.) Reedgrass, occurs as genus in the Family graminaceae Poaceae with about 230 coinage.

Microscopic-reed occurs as sod-forming grass that occurs mainly inside humid ground inside moderate regions of the Northern Hemisphere. It is ordinarily adventive. These tufted perennials usually keep around hairless narrow leaves. A ligules come normally blunt. A inflorescence forms a panicle. A select few can be reed-such as.

A roots can be rhizomatous (undergroud stems by owning shoots), stoloniferous (with runners), or even even tufted (growing around tufts or clumps).

A epicene spikelets have a single flower and are purple or even purple-dark brown. It come out within early summertime in yearn culms ( = stems). It may be super cosmetic.

A word "Calamagrostis" is from either a Greek word kalamos (reed) and agrostis (the rather grass).

Species
Calamagrostis × acutiflora - Feather Reedgrass (hybrid Calamagrostis arundinacea × Calamagrostis epigeios) Calamagrostis arundinacea - Rough Microscopic-reed Calamagrostis bolanderi - Bolander's Reedgrass Calamagrostis brachytriga - Fall Blooping Reed Calamagrostis breweri - Shorthair Reedgrass Calamagrostis cainii - Cain's Reedgrass Calamagrostis canadensis - American Microscopic-reed, Bluejoint, Bluejoint Reedgrass, Bluetop, Meadow Pinegrass, American Reedgrass, Marsh Pinegrass, Marsh Reedgrass. Calamagrostis canescens - Purple Microscopic-reed Calamagrostis chalybaea Calamagrostis coarctata - Arctic Reedgrass Calamagrostis deschampsioides - Circumpolar Reedgrass Calamagrostis epigeios - Wood Small-reed, Bushgrass, Redd 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 volt-ampere. laricina - Purple Reedgrass Calamagrostis purpurascens volt-ampere. purpurascens - Purple Reedgrass Calamagrostis rubescens - Pinegrass, Pine Reedgrass Calamagrostis scopulorum - Ditch Reedgrass, Jones Reedgrass Calamagrostis scotica - Scottish Microscopic-reed Calamagrostis scribneri Calamagrostis sesquiflora - Of these-&-the-half Flower Reedgrass Calamagrostis stricta - Narrow Microscopic-reed, Narrowspike Reedgrass, Slim-stem Reed Grass, Slimstem Reedgrass Calamagrostis stricta volt-ampere. borealis - Boreal Reedgrass Calamagrostis stricta volt-ampere. stricta - Slimstem Reedgrass Calamagrostis tweedyi - Tweedy's Reedgrass Calamagrostis varia Calamagrostis villosa

Reference
[http://biodiversity.uno.edu/delta/grass/www/calamagr.htm Grass Genera of the World]

da:Rørhvene (Calamagrostis)