Dasylirion durangense

Dasylirion durangense, common name "sotol," is a perennial plant in the family Asparagaceae, native to Durango, Chihuahua and Sonora, Mexico.
It is closely related to D. wheeleri and considered a variety of that species by some.
The plant has a large basal rosette of long stiff leaves over 1 m in length, bearing sharp, curved spines along the margins. The flowering stalk can be up to 3 m tall, bearing small wind-pollinated flowers.