Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Petioles 2 - 3 x longer than the blade, membraneously alate on the base, thin to densely pilose under the blade. Pubescence simple or stellate and absent on young or submerged plants. Blade membraneous, sagittato-cordate or triangularly obovate with long blunt lobes, approximately as wide as the midrib length and widest at the base. Blade (6.5) - 20 - 30 cm long and (7_ - 20 - 30 cm wide with 11 - 13 veins (7 - 15 are possible). No pellucid markings.

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