Spotted Euthamia (Euthamia) 2015-8-21 Newark, DE - leaves and spots

https://www.minnesotawildflowers.info/flower/grass-leaved-goldenrod
these folks say: Euthamia graminifolia (Grass-leaved Goldenrod) (...) 3 evident veins on larger leaves and occasionally 2 additional obscure veins.
-- no mention of these large black spots
-- this definitely has 5 veins