Psilactis asteroides, commonly known as New Mexico tansyaster, is a perennial herbaceous plant native to the southwestern United States and northern Mexico. This species is a member of the Asteraceae family, which includes a vast array of flowering plants, and it is recognized for its daisy-like flowers and its adaptation to arid environments. Its scientific name, Psilactis, refers to the genus, while asteroides indicates its resemblance to asters, another group of daisy-like wildflowers. The New Mexico tansyaster typically grows as a low-spreading to erect perennial, reaching heights of about 15 to 40 centimeters. Its stems are often branched, giving the plant a somewhat bushy appearance. The leaves are generally linear to narrowly lanceolate, measuring around 2 to 6 centimeters in length, and they are arranged alternately along the stems. The leaf margins are usually entire, meaning they are smooth and not toothed. The plant's foliage is typically green, though it can sometimes appear grayish-green, especially in drier conditions. The most striking feature of Psilactis asteroides is its inflorescence, which consists of numerous composite flower heads. Each flower head is relatively small, typically measuring about 1 to 2 centimeters in diameter, and possesses ray florets that are white or pale lavender, surrounding a central disc of yellow to purplish-brown disc florets. These flowers bloom from late spring through fall, providing a prolonged display of color. Following flowering, the plant produces small, achene-like fruits, which are characteristic of the Asteraceae family. Psilactis asteroides is primarily found in arid and semi-arid regions, thriving in habitats such as desert scrub, grasslands, and open woodlands. Its native range includes states like New Mexico, Arizona, and parts of Texas, extending into Chihuahua and Sonora in Mexico. This plant is well-adapted to well-drained soils and prefers full sun exposure. It is drought-tolerant once established, making it a suitable choice for xeriscaping and low-water gardens in appropriate climates. Cultivation requirements generally include minimal watering and protection from excessive moisture. While not widely cultivated for ornamental purposes, Psilactis asteroides holds ecological significance as a component of its native plant communities, providing nectar and pollen for pollinators. Its ability to survive in harsh, dry conditions highlights its adaptations to water scarcity, such as its relatively small leaves which reduce water loss through transpiration. The plant's resilience and its attractive, aster-like flowers make it an interesting subject for botanical study and a valuable contributor to the biodiversity of its native ecosystems.