| — a device that measures the moisture level in plant leaves• Note that, although it is the more complex pattern, branching veins appear to be and in some form were present in ancient as long as 250 million years ago | Vein skeleton of a Hydrangea leaf• For more info, see Chicago Manual of Style Heather Kropp, Angela Halasey |
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| ASU - Ask A Biologist | A pseudo-reticulate venation that is actually a highly modified penniparallel one is an of some , which are monocots, e |