Coreopsis auriculata 'Nana' (USA) ?

Coreopsis auriculata 'Nana';
 
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https://08511630493324166816.googlegroups.com/attach/1a1a0a9cdf93/Opp%20Battery%20Park,New%20York-IMG_8154.JPG?part=0.2&view=1&vt=ANaJVrHqIskrWMb1UqQzo-WdgamIZPjiRHZ6c1rKEvneaG6z1oz99fD8StRWbhmz9NTuW_U27W0Ptt73J3UXYnBhTeSzFDecAkV0g9fTyRNG6CQ4wgNWJGo
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Coreopsis Species for ID : New York : 29AUG19 : AK-41 : 8 posts by 3 authors. Attachments (4)
Coreopsis Species seen in Manhattan, opp Battery Park in June, 17.
Short plants, growing in a flower bed.
On searching, looks close to Coreopsis auriculata 'Nana'.
Experts, kindly verify.

Coreopsis, ok. flower indeed has eight petals, yellow, notched. so far so good but can't confirm your diagnosis
1: leaves seems larger than what is described ...
also because,
2:  to definitely classify it as you have suggested you need to see the leaf in its entirety
this variety has this distinguishing feature:
I quote: "Each leaf has a distinctive pair of small lateral lobes at the base of the blade which resemble the shape of mouse ears, hence the sometimes used common name of mouse ear coreopsis for this plant" end quote  from http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=243937
you see :
auriculata refers to ear shape.... please see if you have more pictures of the full leaf....

This was just a suggested id after a lot of searching. These are the only pictures I have.
your suggestion is good. its a learning case. must take pictures of the leaves and if possible stem right down to the soil.
This is a cultivated plant in a garden, clump-forming, rounded leaves. Ruling out all Coreopsis with thread-like leaves and bloom color other than plain yellow/orange, by process of elimination, 'Nana' is the best choice.
Compare the images to the ones here;
https://www.marysplantfarm.com/perennials-frame.htm  
Thanks a lot for your feedback.
 




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