Indian paintbrush (uncountable)
- A herbaceous perennial plant of the genus Castilleja.
- 2006, Thomas Pynchon, Against the Day, Vintage 2007, p. 107:
- Webb and Veikko watched across a meadow of larkspur and Indian paintbrush, and behind them a little creek rushed down the hillside.
- Gaillardia pulchella (Indian blanket, firewheel), a flowering plant of southern US, from Arizona to Florida, and northern Mexico.
- Asclepias tuberosa (butterfly weed), a milkweed of eastern North America.
- Hieracium spp. (certain hawkweeds).