Identification: Two snakebarks - are they the same? and what are they?

Discussion in 'Maples' started by wcutler, Jun 28, 2012.

  1. wcutler

    wcutler Paragon of Plants Forums Moderator VCBF Cherry Scout 10 Years

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    I've been wondering for five years what kind of snakebarks these street trees are outside my building. They've appeared previously in a thread on bark, but I didn't try hard enough for an ID then. The city's tree list shows two A. pensylvaticum here, but we just saw several of those at UBC BG, and these do not look like those. A neighbour was kind enough to pull and cut a branch from each so I could get better photos than what I had five years ago. The tree photos are from back then; the cut branches from yesterday.

    Tree 1, east of my entrance
    The leaves on this are generally longer than they are wide - around 11cm long, 8cm tip to tip across. I thought the brown hairs would indicate A. rufinerve.
    20080607_PendrellBidwell_SnakebarkMaple1_Cutler_7246.jpg 20080607_PendrellBidwell_SnakebarkMaple1_Cutler_7247.jpg 20080608_PendrellBidwell_SnakebarkMaple1_Cutler_7331.jpg 20120627_PendrellBidwell_SnakebarkE_Cutler_P1260061.jpg
    20120627_PendrellBidwell_SnakebarkE_Cutler_P1260063.jpg 20120627_PendrellBidwell_SnakebarkE_Cutler_P1260066.jpg 20120627_PendrellBidwell_SnakebarkE_Cutler_P1260069.jpg

    Tree 2, west of my entrance
    This tree has a broader shape than the other. The leaves are more round, about 10cm long and tip to tip across, and the side lobes are more pronouned. This also has brown hairs that I thought would indicate A. rufinerve.
    20080607_PendrellBidwell_SnakebarkMaple2_Cutler_7254.jpg 20080607_PendrellBidwell_SnakebarkMaple2_Cutler_7260c.jpg 20080608_PendrellBidwell_SnakebarkMaple2_Cutler_7340.jpg 20120627_PendrellBidwell_SnakebarkW_Cutler_P1260054.jpg
    20120627_PendrellBidwell_SnakebarkW_Cutler_P1260057.jpg 20120627_PendrellBidwell_SnakebarkW_Cutler_P1260072.jpg 20120627_PendrellBidwell_SnakebarkW_Cutler_P1260058.jpg

    So are the differences what you can expect within a species, or are they different species?
     
  2. wcutler

    wcutler Paragon of Plants Forums Moderator VCBF Cherry Scout 10 Years

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    I found my attempt at flower photos, from April 16, 2012.

    Tree 1, east

    I missed the flowers on this.
    20120416_PendrellBidwell_SnakebarkE_Cutler_P1210343.jpg 20120416_PendrellBidwell_SnakebarkE_Cutler_P1210348.jpg

    Tree 2, west
    This one did still have flowers
    20120416_PendrellBidwell_SnakebarkW_Cutler_P1210349.jpg 20120416_PendrellBidwell_SnakebarkW_Cutler_P1210356.jpg
     
  3. Ron B

    Ron B Paragon of Plants 10 Years

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    Hybrids are frequent among Sec. Macrantha maples raised from cultivated sources.
     
  4. Michael F

    Michael F Paragon of Plants Forums Moderator 10 Years

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    Tree 2 looks good for Acer rufinerve.

    Tree 1 is trickier; the leaf shape is closer to Acer davidii, but given the red hairs, and Ron's point, perhaps more likely a hybrid.
     
  5. Gomero

    Gomero Well-Known Member Maple Society 10 Years

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    Fully agree, identifying Macrantha maples of unknown origin could be very frustrating.

    Gomero
     
  6. wcutler

    wcutler Paragon of Plants Forums Moderator VCBF Cherry Scout 10 Years

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    I'm happy - one A. rufinerve and one rufinerve (or rufinerve/davidii) hybrid will do for talking about them. Thanks, Ron, Michael and Gomero.
     
  7. Ron B

    Ron B Paragon of Plants 10 Years

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    Will you also be talking to them?
     
  8. wcutler

    wcutler Paragon of Plants Forums Moderator VCBF Cherry Scout 10 Years

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    Of course; I'm sure that's why they look so good. I see them every day, and they seem to do a little dance whenever I appear, particularly if I have a camera in my hand and am trying to get a photo.
     

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