Yucca angustissima explained

Yucca angustissima,^[1] the narrowleaf yucca, is a plant in the family Agavaceae, known as the "narrow-leaved yucca.^[2] " It is native to Arizona, New Mexico, Colorado and Utah, but grown elsewhere as an ornamental.^{[3] [4] [5]}

Yucca angustissima is a low-lying species forming colonies of basal rosettes up to 3 m (10 feet) in diameter. Leaves are long and thin, up to 150 cm long but rarely more than 2 cm across. Flowers are white to cream or greenish-white, pendant, borne in racemes on stalks up to 2 m (7 feet) tall. Fruit is a dry capsule with black seeds.^{[6] [7] [8]}

Yucca angustissima is relatively abundant, and although it has local threats, its population appears to be stable overall.

Varieties

Numerous varietal names have been proposed, but 4 are currently recognized:^{[4] [9]}

1. Yucca angustissima var. angustissima—Arizona, Utah, New Mexico, Colorado
2. Yucca angustissima var. avia Reveal^[10] —Utah only
3. Yucca angustissima var. kanabensis (McKelvey) Reveal^[10] —Arizona and Utah
4. Yucca angustissima var. toftiae (S.L.Welsh) Reveal^[10] —Utah only

External links

• US Department of Agriculture plants profile Yucca angustissima
• photo of herbarium specimen at Missouri Botanical Garden, type of Yucca angustissima, collected near Picacho Peak, Arizona
• Southwestern Colorado Wildflowers
• Dave's Garden, PlantFiles: Narrow-leaved Yucca, Yucca angustissima
• Benny's Cactus, Yucca angustissima ssp. kanabensis
• Gartendatenbank, Gabriele Jesdinsky, Berlin, Palmlilien (Yucca angustissima)
• Sunshine Seeds, Ahlen Germany, Yucca angustissima, Palmlilie, Yucca

Notes and References

1. http://www.botanicus.org/page/672388 Georg Engelmann. Annual Report of the Missouri Botanical Garden 13: 58–59, pl. 23, f. 1, pl. 24, f. 1, pl. 83, f. 6. 1902
2. Bowers, Janice Emily. 1993. Shrubs & Trees of the Southwest Deserts. Western National Parks Association, Tucson.
3. Georg Engelmann. Annual Report of the Missouri Botanical Garden 13: 58–59, pl. 23, f. 1, pl. 24, f. 1, pl. 83, f. 6. 1902.
4. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242102054 Flora of North America v 26 p 434.
5. http://bonap.net/MapGallery/County/Yucca%20angustissima.png Biota of North America Project, Yucca angustissima
6. McKelvey, S. D. 1938–1947. Yuccas of the Southwestern United States. 2 vols. Jamaica Plain.
7. Trelease, W. 1902. The Yucceae. Rep. (Annual) Missouri Bot. Gard. 13: 27–133
8. Thomas H. Kearney, Robert H. Peebles. 1961. Arizona Flora, Second edition. University of California Press, Berkeley.
9. http://www.theplantlist.org/tpl1.1/record/kew-291599 The Plant List
10. Reveal, James Lauritz. 1977. Intermountain Flora; vascular plants of the Intermountain West, U.S.A. New York vol 6, p 534 Yucca angustissima