Cyperus rotundus ?

Cyperus rotundus ?; 
 

 
https://08511630493324166816.googlegroups.com/attach/fad81573fbb1c00a/Grass-DSCN2281.JPG?part=0.1&view=1&vt=ANaJVrHPGN_J6jFo1dfP13for_Htg_dwJOdk5StCy-TCA87iZEm08mWVgc1AKdflu7C8UKx2Li38Cehq33xSAAnA3Y-n9GxmKsaUYl4RG5BUYSiGSIrf5_s
Grass for ID : Oman : 221012 : AK-2: A grass with reddish brown flowers seen growing wild at a farm in Muscat on 27/1/2012.
This is a very common grass.
This is not a grass, but a sedge - Cyperaceae, probably Cyperus rotundus
how can alay person tell the difference...
secondly... may be a tall order, but...
do you have a easy to understand key for te common grasses... masy be by the regions in india?
I too am unable to know the difference between grass & sedge. For me, they all seem similar.
If this grass is a cyperus... its called Mustaka in ayurvedic medicine
and yet some silly professors are using the "roundup " weed killer herbicide to kill it off...
http://www.jtropag.in/index.php/ojs/article/viewFile/127/121
I wonder what the motivation is for these professors...??

The link you have pasted shows Cyperus rotundus L., MUSTAKA in Sanskrit and MUTHA in Bengali, very common, about 2 feet or more, roots smell like DHUNA.
 
https://08511630493324166816.googlegroups.com/attach/a286ead4f151a4a7/5.__Cyperus_sp._IMG_2387.jpg?part=0.5&view=1&vt=ANaJVrHVsxWOABYpErdwhiIzDeL70UDx9jV_aUqmp1u90adfujqSQjJB7raOBgtV5T46OhG2sJX6PAv0G6rscbI-ZTxAkxsdKO8OZVoms1mASbdXo9Llj0c
https://08511630493324166816.googlegroups.com/attach/a286ead4f151a4a7/3.__Cyperus_sp.IMG_2388.jpg?part=0.3&view=1&vt=ANaJVrF5Zv3LBySiriNl8mCFTP_gAybWgXF6DtRSBy5ekpijeP7X0gjUk0bMfE39nnxBxVphzcYe2FOHVlgSGyoQDlae0v0KKRL_vZ041Zk9tSQkZdejJTQ
https://08511630493324166816.googlegroups.com/attach/a286ead4f151a4a7/1._Cyperus_sp._IMG_2385.jpg?part=0.1&view=1&vt=ANaJVrGO1M7h1ju-hPNFhK7opTVhlCghLollInqx6BBv6nwq3VPKIAAXNBoy3ZPTiWutUN4f2z91O0MBBovAqaFrE2SyyWRr8qwa8jEhUwSeko257uOkpCQ


 
https://08511630493324166816.googlegroups.com/attach/a286ead4f151a4a7/4.__Cyperus_sp._IMG_2386.jpg?part=0.4&view=1&vt=ANaJVrFpIeTFV_qCnOZWLB8wXhaKDgt1w5VP-dozuAkAJrFAo8m_A9X8CXJe-6S19d8Yj2mk-TsX7yWmFFuIcCZExka-KHkAMLpMIPV_w4WWJFUk3xTT3Do
Cyperus rotundus L. collected from Kamrup district, Assam : Attachments (5). 4 posts by 3 authors. 
Attaching images of what looks like Cyperus rotundus L. (?). Please ID the plant.
Date :15.06. 2013
Location: Kamrup district, Assam
Family : Cyperaceae
Genus & species : Cyperus rotundus L. (?)
Habitat: Grows wild
Habit : Herb 
efi page on Cyperus rotundus
I do not have clear conception over C. rotundus. According to "Bengal Plants" it is a slender glabrous sedge, stolons thickening into black, woody, ovoid tubes.
 
 
 
https://08511630493324166816.googlegroups.com/attach/80fbde0580d6fbe7/IMG_4436-foi.jpg?part=0.3&view=1&vt=ANaJVrF7y-KRSOyY6UlMwev3gOFp7fUUURT128ccBjCptpAdSpnf4O_hw3CFUBIMN76MHl7yrO-yMejmti3WKUvdy9KFvrZhIAtplHtxFFG4ko_Su3kjwHw
https://08511630493324166816.googlegroups.com/attach/80fbde0580d6fbe7/IMG_4433-foi.jpg?part=0.2&view=1&vt=ANaJVrHiH7czP0R4FRBe4gmZfXknbM2TNiateVlwmN5W0dhY2Md1zGAz7mZ-Gc56ekt_h3eG5b3t4gO8ssQaQofgsx2W3cVDtdd2ALkBcIOjIyZMgsJe1VM
 
https://08511630493324166816.googlegroups.com/attach/80fbde0580d6fbe7/IMG_4433-ee-foi.jpg?part=0.1&view=1&vt=ANaJVrFQVNTpc3Uo4nUpFXM75mqhR0-CDhAJ4ypfsoH0PTxpSZ8T3jDFkh4k-uEejUIrJGJgFHf3KRuLW_2Hh32on7i16_6zxwklNg8hOzBMIlTjUHC7scs
identification no020713sn1 Attachments (3).  4 posts by 3 authors.
Kindly help in identification. Is it Cyperus rotundus?
date/time:oct 12
location:ambyvalley rd., lonavala, pune
habitat:wild
plant habit:sedge
height:4 ft. about
I do not have clear idea on C. rotundus. The key in "Bengal Palnts" informs : "Rhizome stoloniferous; stem at base nodosely thickened, and suddenly contracted into a wiry rhizome."
https://08511630493324166816.googlegroups.com/attach/7bf29b7fe8f10324/DSCN6691_rsz.jpg?part=0.6&view=1&vt=ANaJVrH5cPL8bducXnzO0r85H0ucqDBoimJ10RUfIBJyYww7FoMkDxOF1T2Ci_xsG6sSUyWh7Bs8H-G_N4gFmA5VNP6ogi_-Gyx2Hyw9qiGJlr85AsIM70c
https://08511630493324166816.googlegroups.com/attach/7bf29b7fe8f10324/DSCN6683_rsz.jpg?part=0.8&view=1&vt=ANaJVrE7_1oySiGpD6Wn-AW6dTA5YkPHp-Qz6DD094ydkPlqZWFsemaTPu7e5c39Sw0AZRPCdPf8Mx5l4pZb1n_Gw1tBJGA8UFvsm5Ydns4MueHzZ44OPeI
 
https://08511630493324166816.googlegroups.com/attach/7bf29b7fe8f10324/DSCN6690_rsz.jpg?part=0.5&view=1&vt=ANaJVrHsVF4zoLqrpDjl8mnuisb5AkhkutR8dZ6jD4_4mis5pIRNRME8jmxPi-dkX1zlOtAbW6lFfDDcvRhp_6dFPsYVi_6zTPfuPTm_b7FamSJ_KWnIufs
https://08511630493324166816.googlegroups.com/attach/7bf29b7fe8f10324/DSCN6687_rsz.jpg?part=0.3&view=1&vt=ANaJVrGeDzmeKZHLjf11vuvl0ROVFSkFoWUyy5iF62vxdfaSUGuT9y9WlLywUsFveGiYQA5qNhjjClWGfDuBgCHEXokzTSLUVvSJ-wncyOQUsWqFrEJ9wXg
https://08511630493324166816.googlegroups.com/attach/7bf29b7fe8f10324/DSCN6685_rsz.jpg?part=0.1&view=1&vt=ANaJVrHT3xS6SZ7i_UoY529WvMQwrftZwwXoB5_0hx0G9dwAQEiZSMA_BFdvvBHs2cqBnrufv_AVauKPY-ps-f61R_xjFVPArAk2ENE8vAWReB7Rrgq_ayE

   
 
https://08511630493324166816.googlegroups.com/attach/7bf29b7fe8f10324/DSCN6686_rsz.jpg?part=0.2&view=1&vt=ANaJVrGLHCAkbE0PfETj7eqLxElHITIgJMHHWO9xVFTv1y-fa5RPOtjvNgUzEAv_ZsdZ8jFMNwT95M72TfIFHwI5IPGbSJq5QFp4v0XNmHTFTC2w1H9w2Pk
https://08511630493324166816.googlegroups.com/attach/7bf29b7fe8f10324/DSCN6688_rsz.jpg?part=0.4&view=1&vt=ANaJVrHcHD9eoBgVlXnO3ISKdPNGAru8rxUnfEFtTs84zXey_cR6gOxns_z0rFQLu2Gc3MkYNYDvw4s31d8XyyVZi9jRGTp86jZmCMLLlywwSv9aw9i3o-k
https://08511630493324166816.googlegroups.com/attach/7bf29b7fe8f10324/DSCN6693_rsz.jpg?part=0.7&view=1&vt=ANaJVrGVH8YfQWvITkkhuld0ZeG7h9TA86GNTUSSxHKKi4hygeIEHoCKLpAnhUg00t91z341R7F-q-VxqQLjRzmmVD7Mssu_Ov5REwKLE7RTjK5QVEWM_6M
Attaching images of a Cyperus sp. that i found growing along the wall of a building, amongst garbage of building materials. The place is moist. Could this be Cyperus rotundus L.?
Species : UNKNOWN
Habit & Habitat : about 2 feet high, outside a temporary construction, moist place
Date : 7/7/12, 1.45 p.m.
Place : Hooghly
Its Pycreus species of Cyperaceae 
Attaching more images of this species. It is -
  • about 41 cm high, stem smooth, trigonous
  • leaf 36cm X 5mm

Taking cue from ... i searched "Pycreus species in West Bengal".
A document, available at - http://kuedu.academia.edu/ProfSobhanKrMukherjee/Papers/921505/DIVERSITY_OF_AQUATIC_AND_WET_LAND_PLANTS_OF_WEST_DINAJPUR_DISTRICT_WEST_BENGAL_INDIA, informs me that two Pycreus species in West Bengal are P.pumilas and P.sanguinolentus.
This sage is not Pycreus pumilas, because -
This description of Pycreus sanguinolentus -
However, at least two more Pycreus species available in West Bengal -
  1. P. stramineus - http://www.iucnredlist.org/details/176987/0
  2. P. polystachyos - http://eol.org/pages/248137/entries/46194422/details
Attaching one more pic that might be same species as my previous uploads in this thread. Could it be P. sanguinolentus?
Seems to be a variant of Cyperus rotundus, may be subsp. tuberosus or Cyperus bifax?
  
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