Yucca angustissima

Yucca angustissima,^[2] the narrowleaf yucca,^[3] is a plant in the family Agavaceae, known as the "narrow-leaved yucca.^[4]" It is native to Arizona, New Mexico, Colorado and Utah, but grown elsewhere as an ornamental.^[5][6][7]

Yucca angustissima Narrow-leaved yucca
In Great Sand Dunes National Park and Preserve
Conservation status
Least Concern  (IUCN 3.1)[1]
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 Engelm. ex Trel.

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.^[8][9][10]

Yucca angustissima is relatively abundant, and although it has local threats, its population appears to be stable overall.^[1]

Varieties

Numerous varietal names have been proposed, but 4 are currently recognized:^[6][11]

1. Yucca angustissima var. angustissima—Arizona, Utah, New Mexico, Colorado
2. Yucca angustissima var. avia Reveal^[12]—Utah only
3. Yucca angustissima var. kanabensis (McKelvey) Reveal^[12]—Arizona and Utah
4. Yucca angustissima var. toftiae (S.L.Welsh) Reveal^[12]—Utah only