Yucca glauca (Narrow-leaved yucca)

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Yucca glauca Nutt.

Narrow-leaved yucca, soapweed yucca, beargrass, soapweed

Kingdom	Plantae	Plants, but not fungi, lichens, or algae
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	glauca	Latin for “blue-gray”

About plant names...

Soapweed yucca is a native of North America.

Identification: Plants are up to 3' (1 m) high × 4' (1.2 m) wide. The leaves are pale green, stiff, and sword-shaped, 8-40" (20-101 cm) long and up to ⅛-⅜" (6-12 mm) wide. 15-50 bell-shaped flowers, greenish-white, with six petals, hang from a stalk 12-80" (30-203 cm) tall. The seeds are in cylindrical capsules up 1-1¾" (3-4.5 cm) long.

See the Yucca page for a comparison with other yuccas.

Online References:

The Lady Bird Johnson Wildflower Center

The USDA Forest Service's Fire Effects Information Database

New Mexico Enchantment

Plants for a Future, a resource and information centre for edible and otherwise useful plants

Missouriplants.com

References:

Irish, Mary & Irish, Gary, Agaves, Yuccas and Related Plants: A Gardener’s Guide, Timber Press, 2000, p. 252

Yucca glauca description by Thomas H. Kent, last updated 25 May 2020.