ipomoea leaf ID (challenging!)

Loohan

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I am posting this here as this is not a question relating to potential turtle food (i don't think). leaves.jpg

I live in N Central Arkansas and have seen a few of these vines in years past, but suddenly there is an explosion of them all over one area and i am just curious what it is.
Seems to be ipomoea of some sort, but all the pix i can find fail to show the purplish indentations.
Soon there should be flowers to help the identification...

There are LOTs of heart-shaped vines of various species that look quite similar, except for purple part.
 

dmmj

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Redfool

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Looks a lot like an invasive we have here in Florida. Air Potato (Dioscorea bulbifera) a vine that grow airborne tubers. Might not be the same but maybe same family. Don’t know if toxic or not.
 

Loohan

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Looks a lot like an invasive we have here in Florida. Air Potato (Dioscorea bulbifera) a vine that grow airborne tubers. Might not be the same but maybe same family. Don’t know if toxic or not.
Yeah, sure is similar. Could sure be some kind of dioscorea.
 

dmmj

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Oh look it's a creepy David

20190507_181143.jpg
 

Loohan

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plant.jpg

Turns out it is AIR POTATO. There are 2 kinds, and the kind I have is INVASIVE and inedible, whereas the other type is edible.
https://www.invasivespeciesinfo.gov/profile/air-potato
https://bayouwoman.com/air-potato-vine-the-highly-spreadable-not-so-edible-invasive/
http://www.fox13news.com/news/local-news/beetle-can-help-fight-invasive-air-potato-vine
There is a special beetle that supposedly only eats this plant, but so far i have only found it available to people in S FL.
I did bite into a tuber (and spit it out). It was crunchy, starchy, mild and pleasant tasting.
 

Toddrickfl1

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Plant snap app says "Asiatic Yam" It's not always accurate though. Screenshot_20190926-130546.png
 

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