Isocoma drummondii, the Drummond's goldenbush or Drummond's jimmyweed, is a North American plant species in the family Asteraceae. It has been found on both sides of the RÃÂo Grande, in Tamaulipas and in southern Texas.
Isocoma drummondii is a completely hairless shrub up to 100 cm (40 inches) tall. The plant produces flower heads in clusters on the tips of branches, each head containing 22âÂÂ34 disc flowers but no ray flowers.