Need an ID on this perennial

Ocutter73

LawnSite Member
Location
nj
Theres this perennial that grows wild in this ladys mulch bed. I live in s nj zone 6 or 7. The yellow blooms are now spent from its recent flowering. The plant itself is 6" tall, foliage is only at the top and measures 2" across and remind me of a green daisy. It spreads by tubers and takes up a lot of space as one solid mass. I wish i could post a pic. Ive tried multiple google searches but come up short. Anyone have a good visual library that can help? Thanks
 

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