Triodanis perfoliata (L.) Nieuwl. (Syn: Campanula perfoliata L.; Dysmicodon perfoliatum (L.) Nutt.; Legousia perfoliata (L.) Britton; Pentagonia perfoliata (L.) Kuntze; Prismatocarpus perfoliatus (L.) Sweet; Specularia perfoliata (L.) A.DC.);
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Small Plant for ID : New Jersey : 31AUG19 : AK-48 : 9 posts by 4 authors. Attachments (4)

A very unusual plant seen in a flower bed at a station in New Jersey on 20th June,17.

Appears to be from Acanthaceae

At least one image of frontal of flower would have been better for ID.

agree with … I gave up after devoting half hour trying to figure out on the day you posted it. when something you think is unusual, that’s when you need a few more pictures. this is why a few more pictures are always nice in this day of digital

I suspect it is a Campanula species.

Campanula was the first and usual suspect that where most of us I am sure started, … but rounding up the usual suspects (as in Casablanca) did not help me get any closure to a diagnosis.

I’m now wondering about Triodanis perfoliata (sometimes treated as a Campanula) as a possible ID.

You seem to be correct. It does look like your suggested id. Thanks a lot.