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This a freshly cut section through the trunk of a newly fallen Manilkara chicle (Sapotaceae) tree in Costa Rica. See the next image (DHJanzen100285.jpg) for what it reveals.

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  1   Pooh says to Piglet re Tigger (DHJanzen100240.jpg)   2   all plants have defenses (DHJanzen100241.jpg)   3   beasts, drink and poison (DHJanzen100242.jpg)   4   impenetrable defenses? (DHJanzen100243.jpg)   5   Latin binomials (DHJanzen100244.jpg)   6   satiation (DHJanzen100245.jpg)   7   attack (DHJanzen100246.jpg)   8   behavioral defenses (DHJanzen100247.jpg)   9   behavioral defenses (DHJanzen100248.jpg) 10   hard defenses (DHJanzen100249.jpg) 11   hard defenses (DHJanzen100250.jpg) 12   hard defenses (DHJanzen100251.jpg) 13   snake carnivory (DHJanzen100252.jpg) 14   spines (DHJanzen100253.jpg) 15   cacti (DHJanzen100254.jpg) 16   acacia thorns (DHJanzen100255.jpg) 17   elephants and acacia thorns (DHJanzen100256.jpg) 18   trichomes (DHJanzen100257.jpg) 19   hooked trichomes (DHJanzen100258.jpg) 20   hooked trichomes (DHJanzen100259.jpg) 21   wood (DHJanzen100260.jpg) 22   secondary compounds (DHJanzen100261.jpg) 23   marijuana (DHJanzen100262.jpg) 24   poison ivy (DHJanzen100263.jpg) 25   hemlock (DHJanzen100264.jpg) 26   coffee (DHJanzen100265.jpg) 27   tea (DHJanzen100266.jpg) 28   pyrethrin (DHJanzen100267.jpg) 29   market drugs (DHJanzen100268.jpg) 30   cardiac glycosides (DHJanzen100269.jpg) 31   latex (DHJanzen100270.jpg) 32   avoidance by horses (DHJanzen100271.jpg) 33   avoidance by horses (DHJanzen100272.jpg) 34   avoidance by horses (DHJanzen100273.jpg) 35   aposematic colors (DHJanzen100274.jpg) 36   aposematic colors (DHJanzen100275.jpg) 37   aposematic beetle (DHJanzen100276.jpg) 38   Tetraopes (DHJanzen100277.jpg) 39   Batesian mimics (DHJanzen100278.jpg) 40   Mullerian mimics (DHJanzen100279.jpg) 41   rubber (DHJanzen100280.jpg) 42   rubber tapping (DHJanzen100281.jpg) 43   fig tree latex (DHJanzen100282.jpg) 44   the art of herbivory (DHJanzen100283.jpg) 45   monarch chef (DHJanzen100308.jpg) 46   chewing gum (DHJanzen100284.jpg) 47   chewing gum (DHJanzen100285.jpg) 48   turpentine (DHJanzen100286.jpg) 49   turpentine (DHJanzen100287.jpg) 50   turpentine location (DHJanzen100288.jpg) 51   turpentine defense (DHJanzen100289.jpg) 52   microscope slide mounts (DHJanzen100290.jpg) 53   other functions (DHJanzen100291.jpg) 54   self-sealing (DHJanzen100292.jpg) 55   amber (DHJanzen100294.jpg) 56   mummies (DHJanzen100295.jpg) 57   tanning hides (DHJanzen100296.jpg) 58   tannins where are? (DHJanzen100297.jpg) 59   tannins where are? (DHJanzen100298.jpg) 60   persimmons (DHJanzen100309.jpg) 61   green bananas (DHJanzen100299.jpg) 62   heartwood (DHJanzen100300.jpg) 63   The piano (DHJanzen100301.jpg) 64   sapwood nutrients (DHJanzen100302.jpg) 65   rotting logs (DHJanzen100303.jpg) 66   persistent heartwood (DHJanzen100304.jpg) 67   rotten cores (DHJanzen100305.jpg) 68   inducible defenses (DHJanzen100306.jpg) 69   inducible defenses (DHJanzen100307.jpg)

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slide with image: Pooh says to Piglet re Tigger (DHJanzen100240.jpg) all plants have defenses (DHJanzen100241.jpg) beasts, drink and poison (DHJanzen100242.jpg) impenetrable defenses? (DHJanzen100243.jpg) Latin binomials (DHJanzen100244.jpg) satiation (DHJanzen100245.jpg) attack (DHJanzen100246.jpg) behavioral defenses (DHJanzen100247.jpg) behavioral defenses (DHJanzen100248.jpg) hard defenses (DHJanzen100249.jpg) hard defenses (DHJanzen100250.jpg) hard defenses (DHJanzen100251.jpg) snake carnivory (DHJanzen100252.jpg) spines (DHJanzen100253.jpg) cacti (DHJanzen100254.jpg) acacia thorns (DHJanzen100255.jpg) elephants and acacia thorns (DHJanzen100256.jpg) trichomes (DHJanzen100257.jpg) hooked trichomes (DHJanzen100258.jpg) hooked trichomes (DHJanzen100259.jpg) wood (DHJanzen100260.jpg) secondary compounds (DHJanzen100261.jpg) marijuana (DHJanzen100262.jpg) poison ivy (DHJanzen100263.jpg) hemlock (DHJanzen100264.jpg) coffee (DHJanzen100265.jpg) tea (DHJanzen100266.jpg) pyrethrin (DHJanzen100267.jpg) market drugs (DHJanzen100268.jpg) cardiac glycosides (DHJanzen100269.jpg) latex (DHJanzen100270.jpg) avoidance by horses (DHJanzen100271.jpg) avoidance by horses (DHJanzen100272.jpg) avoidance by horses (DHJanzen100273.jpg) aposematic colors (DHJanzen100274.jpg) aposematic colors (DHJanzen100275.jpg) aposematic beetle (DHJanzen100276.jpg) Tetraopes (DHJanzen100277.jpg) Batesian mimics (DHJanzen100278.jpg) Mullerian mimics (DHJanzen100279.jpg) rubber (DHJanzen100280.jpg) rubber tapping (DHJanzen100281.jpg) fig tree latex (DHJanzen100282.jpg) the art of herbivory (DHJanzen100283.jpg) monarch chef (DHJanzen100308.jpg) chewing gum (DHJanzen100284.jpg) chewing gum (DHJanzen100285.jpg) turpentine (DHJanzen100286.jpg) turpentine (DHJanzen100287.jpg) turpentine location (DHJanzen100288.jpg) turpentine defense (DHJanzen100289.jpg) microscope slide mounts (DHJanzen100290.jpg) other functions (DHJanzen100291.jpg) self-sealing (DHJanzen100292.jpg) amber (DHJanzen100294.jpg) mummies (DHJanzen100295.jpg) tanning hides (DHJanzen100296.jpg) tannins where are? (DHJanzen100297.jpg) tannins where are? (DHJanzen100298.jpg) persimmons (DHJanzen100309.jpg) green bananas (DHJanzen100299.jpg) heartwood (DHJanzen100300.jpg) The piano (DHJanzen100301.jpg) sapwood nutrients (DHJanzen100302.jpg) rotting logs (DHJanzen100303.jpg) persistent heartwood (DHJanzen100304.jpg) rotten cores (DHJanzen100305.jpg) inducible defenses (DHJanzen100306.jpg) inducible defenses (DHJanzen100307.jpg)