Anyone know this flower?

The plant is 4 Ft tall the flowers are 1 1/2 inch the stems are square the sap is not milky.It is growing in Missouri. This plant is growing where my friend planted two plants she bought from a master gardener sale last year. A Verbena and a Bee Balm.
Bill

 

maybe selago serrata

 

Leviylal Thanks but the leave are different.
Bill

 

Some Verbena pics here may help. www.plants.usda.gov/java/profile?symbol=VERBE

 

I don't think it's a verbena...

 

OK I'll ask the stupid question - do those leafy stems in the first photo belong to this flower or are the flower stalks bare?

 

How large are these flowers?

 

The leaves belong to the flower like in the close up and the flowers are an inch and a half wide.
Bill

 

I can see the leaves in the close-up but they are the casing of the bud, and not necessarily the same as the leaves on the stem.

It looks painfully like an allium but it is hard to imagine that you would have so many mature alliums in a pot of plants that you buy, not to mention that allium time is mostly over.

I'll keep thinking about it.

 

How about Trachelium caeruleum

 

These are the leaves and she says it smells like bee balm.

 

Very intriguing. Square stems limits the possibilities quite a bit, opposite leaves even more-so, and bee-balm-like scent should put it nicely in the mint family. That being said, I don't know too many mints that have inflorescences like that, and it doesn't seem to be any of those.

 

I dont think this one will be solved.
Bill

 

Are you sure those flowers go with those leaves?

 

Levilyla if you go to the first picture on this post theres a group Picture showing the leaves.
Bill

 

one more....Trachymene caerulea. This is driving me crazy.

 

It doesn't seem to be an umbel, but a sphere or globe shaped flower.

Maybe it is some sort of rare Monarda. I was thinking Monarda fistulosa, but it doesn't look right although it is purple. I don't know what other arcane species monardas to look up.

One of us will figure it out eventually... but for quicker action, have you tried Garden Web's Name that Plant? You might get a bigger crowd there.

 

could it be a weird type of knautia?

that family has multi-sided stems with opposite leaves

 

The leaves look whorled under the flower heads, and the stem looks round in the photo. Maybe you have two different plants. Looks sort of like a variety of Joe-Pye weed, Eupatorium purpureum, or some other Eupatorium. A close-up of the flowers would help.

 

The flowers are atypical, but all other signs point to a variety of Monarda.

 

Closer view of flowers might make it possible to discern affiliations.

 

As the owner of the plant says any closer and pictures would be blured.
Bill

 

flowers still don't seem to go with the foliage....maybe just another picture different angle.

 

With Square stems and whorled leaves, I would say it is a Joe-Pye-Weed, Eupatorium maculatum or E. pupureum, probably the latter...

 

The foliage certainly looks like Eupatorium.