Synonyms for Indian Paintbrush (same or very similar meaning)
WordNet sense 1 (erect perennial of eastern and southern United States having showy orange flowers):
chiggerflower, butterfly weed, Asclepias tuberosa, chigger flower, orange milkweed, pleurisy root, tuber rootWordNet sense 2 (any of various plants of the genus Castilleja having dense spikes of hooded flowers with brightly colored bracts):
painted cupFrom the ODE community, based on WordNetadd/edit