Yucca baccata Torr. var. brevifolia (Schott ex Torr.) L.D. Benson & Darrow
Yucca brevifolia Schott ex Torr.， nom. inval.
Yucca macrocarpa Engelm.， non Merriam
Yucca puberula Torr.
Yucca thornberi McKelvey
Yucca treleasei J.F. Macbr.
Yucca ×schottii Engelm. (pro sp.)
Schott’s yucca, blue yucca, hoary yucca, mountain yucca
Schott’s yucca is native to Arizona and New Mexico, and the northern parts of Sonora and Chihuahua, at elevations of 2500–3000′ (762–914 m). It is listed variously as Yucca ×schottii, Yucca × schottii, and Yucca schottii. It is a natural hybrid, between Yucca baccata and Y. madrensis, or possibly Y. baccata and Y. elata.
Plants: Up to 16′ (5 m) high, with dark brown, sometimes branched trunks up to 12″ (30 cm) in diameter.
Leaves: Lanceolate, blue-green to gray-green, broader in the middle and tapered at both ends. The rigid, sometimes slightly curved leaves are up to 2′ ⨉ 3″ (60 ⨉ 8 cm), and tipped with hard spines.
Flowers: White. The flowers open at night.
Fruits: The white flowers turn into a fleshy green eggplant-shaped fruit which ripens to a deep purple by late summer or early fall.
Habitats: Rocky slopes, canyons, oak woodland; to 1.4 mi (2.3 km) elevation.
Online References:
Leafyplace.com Yucca comparisons
Yucca arizonica McKelvey
Yucca baccata Torr. var. brevifolia (Schott ex Torr.) L.D. Benson & Darrow
Yucca brevifolia Schott ex Torr.， nom. inval.
Yucca macrocarpa Engelm.， non Merriam
Yucca puberula Torr.
Yucca thornberi McKelvey
Yucca treleasei J.F. Macbr.
Yucca baccata Torr. var. brevifolia (Schott ex Torr.) L.D. Benson & Darrow
Yucca brevifolia Schott ex Torr.， nom. inval.
Yucca macrocarpa Engelm.， non Merriam
Yucca puberula Torr.
Yucca thornberi McKelvey
Yucca treleasei J.F. Macbr.
This is labeled Yucca arizonica. Some experts believe this is Yucca ×schottii. · 5/24/2009 · Arizona Sonora Desert Museum, Tucson, Arizona 
| Kingdom | Plantae | Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin) |
| Subkingdom | Tracheobionta | Vascular plants—plants with a “circulatory system” for delivering water and nutrients |
| Division | Magnoliophyta | Flowering plants, also known as angiosperms |
| Class | Liliopsida | Monocots (plants with a single seed leaf); includes the lily family |
| Subclass | Liliidae | Includes lilies, orchids, and many others |
| Order | Asparagales | A diverse group that includes asparagus |
| Family | Asparagaceae | Agaves, asparagus, hyacinths, and others |
| Genus | Yucca | Linnaeus mistakenly derived the genus name from the Carib word for (similar-appearing) cassava, yuca |
| Species | ×schottii | For Arthur Carl Victor Schott (1814-1875), artist, engineer, poet, geologist, musician and one of the naturalists of the Mexican Boundary Survey |
Yucca ×schottii description by Thomas H. Kent, not updated.
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