I'd guess I. violacea, but I'm not sure. Wikiposedly there are some 500 Ipomoeas, and I don't have any idea how many of those are common enough that they might have wound up in the cornfield behind the house. I. violacea seems like a reasonable guess, from what I see while googling.
The cornfield is also home to a couple Helianthus sp. (possibly H. tuberosus?), though those are a lot harder to photograph, being tall, and so far I've been unsuccessful. Though it's possible that I've only tried once.
It looks more like Ipomoea hederacea to me.... I. violacea has larger flower than that.
ReplyDeleteThat picture reminds me of something that frustrates me quite alot; that morning glory seeds sold by korean seed companies are 99.9% I. hederacea(the other 0.1% tend to be I. purpurea) despite the fact that the picture on the package always depicts I. nil.