Dasylirion

Dasylirion is a genus of evergreen flowering plants in the family Asparagaceae, subfamily Agavoideae. Native to Mexico and the southwestern United States, the plants are commonly known as sotol or desert spoon. The genus comprises about 20 species and is readily distinguished by rosette-forming growth and long, slender leaves.

Dasylirion species are perennial, forming basal rosettes with long, narrow, rigid leaves. The leaf blades are typically pale green to blue-green and may have a sharp terminal spine and marginal teeth or a fibrous edge. Leaves often have a sandpapery surface. Rosettes can reach up to 1.5–2 meters in height, with leaves extending several meters. Flowering occurs on tall stalks (panicles) bearing numerous small white to pale yellow flowers; fruit are dry capsules.

The plants inhabit arid and semi-arid environments, including desert scrub, grasslands, and rocky hillsides from northern Mexico into the southwestern United States. They are drought-tolerant and prefer full sun and well-drained soils. Dasylirion are relatively slow-growing and can be sensitive to overwatering and poorly drained conditions.

Many species are cultivated as ornamental plants in suitable climates, including parts of the Mediterranean, Australia, and North America. They are valued for architectural rosettes and drought tolerance. In some regions, certain species are used to produce sotol, a traditional Mexican alcoholic beverage, and fibers may be used for weaving or crafts.

Taxonomically, Dasylirion is placed in the subfamily Agavoideae of Asparagaceae. While the genus contains a diversity of species, several face conservation concerns due to habitat loss, though the overall genus is not broadly threatened.