Flowerheads of eurybia conspicua
consist of between 12 and 35 purple or bluish ray florets, about half an inch long, and around 50 yellow disc florets. The bell-shaped involucre is lined by four or five rows of green, differently-sized phyllaries, sometimes purple at the tip. Phyllary margins are ciliate, and the tips bend outwards, by 90 degrees or more. Phyllaries are densely glandular, as are the stems, especially towards the top. The inflorescence is an open cluster of between 50 and 50 heads.
Plants produce one stem, generally unbranched, bearing broad, toothed leaves at alternate intervals. Lower stem leaves are widest towards the tip (oblanceolate), while those higher up are lanceolate, widest towards the base. Leaves have a prominent, light-colored center vein, and branched side veins. Leaf teeth terminate in a tiny spine.