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View Diary: The Daily Bucket: Shore Pine (83 comments)

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  •  A note on pine 'cones': (7+ / 0-)

    "The pink female flowers will grow into cones in time (if pollinated): "

    i haven't thought about this until now:

    that Pinus (and all conifers?) are monoecious (bearing male and female reproductive parts, 'flowers', separately but on the same plant);

    that the female part, or 'ovulate cone', will bear offspring, 'fruit'  if pollinated (and is fertile);

    but  will the female flower, bearing ovules, develop into a woody cone if not pollinated and/or not fertile?

    The way to find out is to bag the ovulate cone prior to pollin release (maybe it is too late now to do this).

    Also, bagging is of interest in selective breeding; pollen could be collected from another individual (same spp.) and applied to any non-pollinated ovulate cone .  There is a question of how long before seed maturation (sometimes 2-3 years).

    note: as for P. contorta, it looks like we have two 'forms' going; your Shore Pine form and our Lodgepole form here at the eastern edge of the Columbia Basin where fire is more frequent and hence the species will pioneer on burned over tracts of Douglas fir forming dense stands.  Unless ornamental, I seldom see a lone individual such as in your beautiful photograph.

    Thank you for the post.

    •  That's a good question. (5+ / 0-)

      In spite of the blanket of pollen, it's possible some female "flowers" might not get pollinated. That would be an interesting experiment though as you say it's probably too late to try isolating it this year.

      I know in the garden if flowers don't get pollinated the fruits they produce, if any, are malformed. Like cucumbers. The plant chooses not to spend energy on it.

      Lodgepole form - so different in many ways. Botanists actually call them variants, but they must still b able to fertilize each other, to be species. I lived in central Oregon or a while where there's Lodgepole, with stands like you describe, but they were hit with the pine beetle. Not all the trees died but there was a lot of space between them.

      Thanks for reading and commenting!

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