Yucca thompsoniana Trel.
Yucca rostrata Engelm. ex Trel.
Yucca rostrata Engelm. ex Trel. var. linearis Trel.
Beaked Yucca, Thompson's Yucca
Beaked yucca is a native of Texas.
Identification: Beaked yucca is a small tree 6-12' (1.8-3.7 m) high and 6' (1.8 m) wide, with a trunk that is sometimes branched. Leaves emerge in a spherical shape from the tips of the trunk(s), with dead leaves forming a skirt around upper portions of each trunk. The stiff leaves, narrow and swordlike, 8-24" (20-60 cm) × ½" (1.3 cm). Leaf edges are hard, pale yellow, often with fine teeth. Flowers are white, round to bell-shaped, on 24-36" (60-91 cm) stalks above the leaf clusters. Seed capsules are 1-2" (3-6 cm) long × ⅜-¾" (1-2 cm) thick.
It is possible that the closely related Yucca ridigda is the same plant.
See the Yucca page for a comparison with other yuccas.
Yucca thompsoniana at the Lady Bird Johnson Wildflower Center
Yucca thompsoniana on Benny Møller Jensen's Denmark site, www.bennyskaktus.dk
Yucca thompsoniana at Chris A. Martin's site at Arizona State University
Yucca thompsoniana on Wikimedia Commons
Yucca thompsoniana on Chihuahuan Desert Plants
Irish, Mary & Irish, Gary, Agaves, Yuccas and Related Plants: A Gardener’s Guide, Timber Press, 2000, p. 265 (here called Yucca rostrada)
Yucca thompsoniana description by Thomas H. Kent, last updated 16 Aug 2013.
Range: Zones 7b-11: