Syn.: Cleistoyucca arborescens (Torr.) Eastw., Clistoyucca arborescens (Torr.) Trel., Clistoyucca brevifolia (Engelm.) Rydb., Sarcoyucca brevifolia (Engelm.) Linding., Yucca arborescens (Torr.) Trel., Yucca draconis var. arborescens Torr., Yucca jaegeriana (McKelvey) L. W. Lenz
Family: Asparagaceae Juss.
Distribution: Endemic species of the Madrean Region of North America, occurs in southeastern California, southern Nevada, southwestern Utah and northwestern Arizona.
Ecology: It grows in the Mojave Desert, in elevations from 400 to 1800 m. It blooms from late winter to spring.
Description: Perennial, evergreen and arborescent plant, up to 10 m tall. Stem usually solitary, simple or branched, branches 1–3 m long. Leaves in rosettes at branch ends, linear-lanceolate, 15–35 cm long and 0.7–1.5 cm wide, entire, rigid, glabrous. Inflorescence erect, paniculate, 30–55 cm long, flowers campanulate, 4–7 cm, hexamerous, greenish-white to creamy. The fruit is pendent, capsular, 6–8.5 cm long.
Note: The genus Yucca contains about 35–40 species from many states of USA, northern and central Mexico and Central America.
These images were taken in USA, California, NP Joshua Tree (by Pavlína Zahradníková, January 2007, and March 2014, and Eva Camin, January 2014).