Yucca glauca

Yucca glauca in the fall in South Dakota

The blue-green yucca (Yucca glauca ) (English common name: Great Plains Yucca ) is a plant of the genus yucca (Yucca ) in the family of asparagus plants ( Asparagaceae ).

Description

The blue-green yucca ( ​​but sometimes with stems up to 60 cm in height ) grows solitary, stemless to forming clumps, with ten to twelve rosettes, 2 to 3 feet wide. The thin, soft, flexible, green, gray, white on the edges sometimes with fine fibers, leaves are 20-70 cm long and 1-2 cm wide.

The leaves in the beginning, racemose inflorescence is 1-2 meters high. The bell-shaped, spherical, white, cream -colored flowers have a length and a diameter of 4 to 6 cm. The flowering period extends from April to June.

Occurrence

The blue-green yucca in the U.S. in the prairies of the West in the states of Montana, Nebraska, South Dakota, North Dakota, Colorado, Wyoming, Oklahoma. Kansas and New Mexico used in levels at altitude 800-2600 meters. This type is often found associated with various types of cactus.

The blue-green yucca in Central Europe hardy to minus 18 ° C. She is one of the hardest species of the genus.

System

The first description by Thomas Nuttall under the name Yucca glauca was published in 1813.

We distinguish the following sub- types:

• Yucca glauca Nutt. subsp. glauca
• Yucca glauca subsp. stricta ( Sims ) Hochstätter
• Yucca glauca subsp. albertana Hochstätter

Yucca glauca is a species of the section Chaenocarpa series glaucae.

Pictures

Yucca glauca:

14 years old copy with inflorescence in Mannheim.