Chamaesaracha, commonly known as five eyes, is a genus of perennial herbs in the nightshade family (Solanaceae), placed in the order Solanales. The genus contains around nine species, all native to the arid and semi-arid landscapes of the southwestern and western United States and adjacent parts of Mexico.
Plants in this genus grow low to the ground and are notably hairy throughout, with crinkly, dull green leaves that give them a rough, mat-forming appearance. The flowers are star-shaped to wheel-shaped — a form characteristic of many solanaceous genera — and range from white to pale lavender. After flowering, the dried calyx persists around the fruit, which is a small, spherical berry containing flat, kidney-shaped seeds. This persistent calyx feature is the source of the common name "five eyes," referring to the five lobes visible around each fruit.
Species within the genus are primarily found in open, dry habitats including desert scrub, grasslands, and rocky slopes, often in disturbed or sandy soils. Among the better-known species are Chamaesaracha coronopus (greenleaf five eyes), Chamaesaracha coniodes (gray five eyes), and Chamaesaracha villosa (TransPecos five eyes), the latter restricted to the Trans-Pecos region of Texas.
Distribution
Chamaesaracha species are native to the southwestern and western United States and parts of Mexico, occurring in dry, open habitats such as desert scrub, rocky slopes, and grasslands. One species, C. edwardsiana, is restricted to the Edwards Plateau of Texas.
Taxonomy
The genus belongs to the family Solanaceae (nightshade family), order Solanales. GBIF recognizes eight accepted descendant taxa. Chamaesaracha is closely related to the genus Leucophysalis, with which it shares considerable morphological similarity and a tangled taxonomic history.
