grass with dark seedhead

Discussion in 'Plants: Identification' started by allelopath, Jun 26, 2006.

  1. allelopath

    allelopath Well-Known Member 10 Years

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    Can anybody id this grass?
    It seems to grow to about 20 cm. The seedheads are very dark, either black or brown (possibly varying with age). Found at ~3300m asl, along the trails in a coniferous forests in the southern rocky mountains (us).
    Thanks,
     

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  2. Ron B

    Ron B Paragon of Plants 10 Years

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    With heads like that probably a sedge. Look at books, maybe sites that discuss wild plants of the region. Sedges (and grasses) usually require a manual and a hand lens, will be differentiated by technical details.
     
  3. Daniel Mosquin

    Daniel Mosquin Paragon of Plants UBC Botanical Garden Forums Administrator Forums Moderator 10 Years

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    Very likely Juncus mertensianus (or some say J. mertensiana). Can't say for certain, not knowing what other possibilities might exist.

    Photos for comparison: Juncus mertensiana

    Juncus mertensianus from the USDA site
     
  4. Ron B

    Ron B Paragon of Plants 10 Years

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    Looks like it. I went with sedge because there appears to be a flat leaf on the specimen to the right of the original photo. "Sedges have edges, rushes are round."
     
  5. allelopath

    allelopath Well-Known Member 10 Years

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    Not that you can tell from the photo, but it is 'round'.

    Can either of you point me to something explaining grass/sedge/rush?
    Searching on the internet on these words, I can't find anything distinguishing them.
     
  6. Daniel Mosquin

    Daniel Mosquin Paragon of Plants UBC Botanical Garden Forums Administrator Forums Moderator 10 Years

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    Here's a Google search for [GOOGLE]"sedges have edges"[/GOOGLE], which will find you quite a few pages on the topic.
     
  7. allelopath

    allelopath Well-Known Member 10 Years

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    I have since determined that the genus is Carex.
    Species still not so sure, maybe phaeocephala.
     

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