Quixote Plant, Chapparal Yucca
Hesperoyucca whipplei
Synonyms: Yucca whipplei; Hesperoyucca whipplei var. graminifolia; Yucca californica; Yucca graminifolia; Yucca nitida; Yucca ortgiesiana; Yucca whipplei subsp. caespitosa; Yucca whipplei var. caespitosa; Yucca whipplei subsp. intermedia; Yucca whipplei var. intermedia; Yucca whipplei subsp. parishii; Yucca whipplei var. parishii; Yucca whipplei subsp. percursa; Yucca whipplei var. percursa
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- 
- 

Chapparal yucca as seen in Culp Valley, several miles southwest of Borrego Springs, CA, Anza-Borrego Desert State Park..........March 29, 2011.
Paul Slichter