Looking for help identifying this species of goldenrod (Solidago)

[robrocke]

I have planted several native species of goldenrod. This is a volunteer and doesn't look like either the Showy Goldenrod (Solidago speciosa) or Blue-Stemmed Goldenrod (Solidago caesia) plants that I've intentionally planted elsewhere.
Can anyone help me identify this Solidago species?
I live on coastal Connecticut.
Thank you.

 

[Twigs]

Looks different, possibly Seaside variety.