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Posted by Brandt-San Diego
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on 10/31/2009, 4:23 pm, in reply to "Kentucky coffeetree might be second."
75.80.191.214
I'd think Ailanthus would definitely be on that list! For simple leaves (among temperate trees, at least), the catalpa would be as well.
Of course, including dicots from the tropics would be an entirely different story--some of the aroids have HUGE petioles!
Then one can ask what the heaviest petioles are relative to the weight of the entire leaf (perhaps looking at trees, past peak, in autumn would be a clue--if some of the petioles are still on the tree, but the leaflets have fallen off, that might be a clue).
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