Yucca angustissima

Yucca angustissima,[1] the narrowleaf yucca,[2] is a plant in the family Agavaceae, known as the "narrow-leaved yucca.[3]" It is native to Arizona, New Mexico, Colorado and Utah, but grown elsewhere as an ornamental.[4][5][6]

Yucca angustissima
Narrow-leaved yucca
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Asparagaceae
Subfamily: Agavoideae
Genus: Yucca
Species:
Y. angustissima
Binomial name
Yucca angustissima

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.[7][8][9]

Varieties

Numerous varietal names have been proposed, but 4 are currently recognized:[5][10]

  1. Yucca angustissima var. angustissima—Arizona, Utah, New Mexico, Colorado
  2. Yucca angustissima var. avia Reveal[11]—Utah only
  3. Yucca angustissima var. kanabensis (McKelvey) Reveal[11]—Arizona and Utah
  4. Yucca angustissima var. toftiae (S.L.Welsh) Reveal[11]—Utah only

References
  1. 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. "Yucca angustissima". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 8 August 2015.
  3. Bowers, Janice Emily. 1993. Shrubs & Trees of the Southwest Deserts. Western National Parks Association, Tucson.
  4. 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.
  5. Flora of North America v 26 p 434.
  6. Biota of North America Project, Yucca angustissima
  7. McKelvey, S. D. 1938–1947. Yuccas of the Southwestern United States. 2 vols. Jamaica Plain.
  8. Trelease, W. 1902. The Yucceae. Rep. (Annual) Missouri Bot. Gard. 13: 27–133
  9. Thomas H. Kearney, Robert H. Peebles. 1961. Arizona Flora, Second edition. University of California Press, Berkeley.
  10. The Plant List
  11. Reveal, James Lauritz. 1977. Intermountain Flora; vascular plants of the Intermountain West, U.S.A. New York vol 6, p 534 Yucca angustissima
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