4,000th post stumper

Discussion in 'Plants and Biodiversity Stumpers' started by Michael F, Apr 9, 2008.

  1. Michael F

    Michael F Paragon of Plants Forums Moderator 10 Years

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    Name the species.

    Scale in cm.
     

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  2. joclyn

    joclyn Rising Contributor

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    douglas fir

    pinaceae, pseudotsuga, carrière
     
  3. Michael F

    Michael F Paragon of Plants Forums Moderator 10 Years

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    Yes, but which?!
     
  4. lorax

    lorax Rising Contributor 10 Years

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    Hold the phone, Micheal - which cone? Or name the species for both cones?

    The one on the right is Coast Douglas Fir Pseudotsuga menziesii subsp. menziesii

    The one on the left is Rocky Mountain Douglas Fir Pseudotsuga menziesii subsp. glauca

    These are trees I used to speak for! I was missing them down here.

    And this is my 700th post! How very fitting.
     
    Last edited: Apr 9, 2008
  5. joclyn

    joclyn Rising Contributor

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    oops! the one on the right. it's menziesii variety.
     
  6. Douglas Justice

    Douglas Justice Well-Known Member UBC Botanical Garden Forums Administrator Forums Moderator VCBF Cherry Scout Maple Society 10 Years

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    Pseudotsuga macrocarpa for sure on the right. Perhaps a P. macrocarpa x P. japonica hybrid on the left.
     
  7. lorax

    lorax Rising Contributor 10 Years

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    I thought that macrocarpa cones were much larger than that?
     
  8. Michael F

    Michael F Paragon of Plants Forums Moderator 10 Years

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    Lorax & Joclyn are correct for the one on the right – Pseudotsuga menziesii subsp. menziesii. Congrats!

    No-one has the one on the left yet . . .
     
  9. lorax

    lorax Rising Contributor 10 Years

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    Is it also Douglas Fir, or are we looking at another of the Firs?
     
  10. edleigh7

    edleigh7 Well-Known Member

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    Unsure on the cones Michael, but congrats on your 4,000th post : )

    Ed
     
  11. lorax

    lorax Rising Contributor 10 Years

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    Perhaps Abies alba - Silver Fir, or Abies procera - Noble Fir?
     
  12. Michael F

    Michael F Paragon of Plants Forums Moderator 10 Years

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    Nope not Abies, both are Pseudotsuga.

    Thanks, Ed!
     
  13. lorax

    lorax Rising Contributor 10 Years

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    Fine then; I'm eliminating P. japonica as I really can't figure out how you'd manage to get a cone from it short of going to Japan.

    P. lindleyana, perhaps? It's remarkably similar to P. menziesii subsp. glauca conewise.

    Otherwise, P. sinensis.
     
  14. joclyn

    joclyn Rising Contributor

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    oops, nevermind
     
  15. Michael F

    Michael F Paragon of Plants Forums Moderator 10 Years

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    Nope - I've got cones of all of those, but it isn't any of them!
    (P. japonica - there's 3 or 4 specimens in gardens in Britain, and they regularly bear cones, but the cones are only 3-5cm long; P. sinensis cone I've been sent from a cult. tree in New Zealand, but is only about 6cm long)

    Douglas actually mentioned the right answer, but for the wrong cone! It is P. macrocarpa. I deliberately selected my smallest P. macrocarpa cone (wild origin, from Pine Mt., near Ojai, Ventura Co., CA), and my largest P. menziesii cone (cultivated, UK). The aim was to catch people out with that the two species do overlap in cone length*, and it looks like it worked ;-)

    * P. macrocarpa 10-18cm; P. menziesii subsp. menziesii 6-12cm. They don't overlap in seed size though, with P. macrocarpa always having markedly larger seeds; I'll post pics of the seeds tomorrow.
     
  16. Michael F

    Michael F Paragon of Plants Forums Moderator 10 Years

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    Here's the seeds; P. macrocarpa left, P. menziesii right.
     

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  17. lorax

    lorax Rising Contributor 10 Years

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    See, that would actually have made it a whole lot easier.
     

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