Calochortus monanthus is a presumed extinct North American species of flowering plant in the lily family known by the common names single-flowered mariposa...

Coahuila, Tamaulipas Calochortus mendozae - Querétaro, San Luis Potosí Calochortus minimus Sierran mariposa lily - CA †Calochortus monanthus Shasta River mariposa...

is the Yreka phlox (Phlox hirsuta). The only known specimen of Calochortus monanthus, the single-flowered mariposa lily, was collected near Yreka along...