Tetraneuris acaulis is a type of low-growing plant commonly known as stemless four-nerve daisy or Hymenoxys acaulis. Its daisy-like yellow flowers bloom in the spring and summer months, making it a popular choice for gardens and landscapes. Other synonyms for this plant include Hymenoxys acaulis var. arizonica, Tetraneuris acaulis var. arizonica, and Hymenoxys acaulis var. glabra. This plant is native to several regions in North America, including Colorado, Arizona, and New Mexico. It is often used medicinally for its anti-inflammatory and analgesic properties, and can also be used for making teas and other herbal remedies.