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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Monocots
Ordo: Asparagales

Familia: Asparagaceae
Subfamilia: Agavoideae
Genus: Yucca
Sectio: Y. sect. Chaenocarpa
Series: Y. ser. Rupicolae
Species: Yucca rostrata
Name

Yucca rostrata Engelm. ex Trel.
References

Report (Annual) of the Missouri Botanical Garden. St. Louis 13:68, t. 40-42, 84 fig. 3, & 93 fig. 2. 1902
USDA, ARS, Germplasm Resources Information Network. Yucca rostrata in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 08-Apr-12.

Yucca rostrata [3] also called beaked yucca, is a tree-like plant belonging to the genus Yucca. The species is native to Texas, Chihuahua and Coahuila.[4][5]
Detail of the trunk

Yucca rostrata has a trunk up to 4.5 meters tall, with a crown of leaves at the top. Leaves are thin, stiff, up to 60 cm long but rarely more than 15 mm wide, tapering to a sharp point at the tip. The inflorescence is a large panicle 100 cm tall, with white flowers.[4][5][6]

Cultivation

As one of the hardiest trunk-forming yuccas, Yucca rostrata can be grown successfully outdoors down to USDA hardiness zone 5 and is popular in the Southwestern United States. The tree-like plant is commonly cultivated in El Paso, Texas, Albuquerque, New Mexico, and Denver, Colorado.[7][8]

Cultivars

'Sapphire Skies' has powder blue foliage.[9][10]

Natural range
References

Ayala-Hernández, M.M.; Solano, E.; Puente, R.; Clary, K. (2020). "Yucca rostrata". IUCN Red List of Threatened Species. 2020. Retrieved 7 June 2021.
The Plant List Yucca rostrata
Trelease, Annual Report of the Missouri Botanical Garden 13: 68, plates 40–42, plate 84, fig. 3, plate 93, fig. 2. 1902.
"Botanica. The Illustrated AZ of over 10000 garden plants and how to cultivate them", p 941. Könemann, 2004. ISBN 3-8331-1253-0
Trelease, William. 1902. Annual Report of the Missouri Botanical Garden 13: 68, plates 40–42, plate 84, fig. 3, plate 93, fig. 2. Yucca rostrata
Ferguson, David J. 1996. Cactus and Succulent Journal (U.S.) Los Angeles 68(3): 130, Yucca linearis
"Yuccalicious! Succulent delights at Denver Botanic Gardens' Yuccarama".
http://www.hardytropicalplants.com/2012/07/yucca-rostrata.html#.VSgija7JRBY
Plant Delights Nursery, The Woodlands Texas, Sapphire Skies for sale/

Mobnrovia Horticultural Craftsmen, Azusa California, Sapphire Skies Beaked Blue Yucca

Fritz Hochstätter (Hrsg.): Yucca (Agavaceae). Band 1 Dehiscent-fruited species in the Southwest and Midwest of the USA, Canada and Baja California , Selbst Verlag, 2000. ISBN 3-00-005946-6
Fritz Hochstätter (Hrsg.): Yucca (Agavaceae). Band 2 Indehiscent-fruited species in the Southwest, Midwest and East of the USA, Selbst Verlag. 2002. ISBN 3-00-009008-8
Fritz Hochstätter (Hrsg.): Yucca (Agavaceae). Band 3 Mexico , Selbst Verlag, 2004. ISBN 3-00-013124-8
Die Gattung Yucca Fritz Hochstätter
Yucca I [1] Verbreitungskarte I Fritz Hochstätter

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