Yucca baileyi subsp. intermedia

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Yucca baileyi subsp. intermedia
Yucca baileyi subsp. intermedia in May in New Mexico, Texas

Yucca baileyi subsp. intermedia in May in New Mexico, Texas

Systematics
Order : Asparagales (Asparagales)
Family : Asparagaceae (Asparagaceae)
Subfamily : Agave family (Agavoideae)
Genre : Palm lilies ( yucca )
Type : Yucca baileyi
Subspecies : Yucca baileyi subsp. intermedia
Scientific name
Yucca baileyi subsp. intermedia
( McKelvey ) Hochstätter

Yucca baileyi subsp. intermedia (English common name "Intermediate Yucca") is a subspecies of the plant species Yucca baileyi in the asparagus family (Asparagaceae).

description

Yucca baileyi subsp. intermedia grows solitary to group-forming and forms three to four rosettes. It is stemless, but sometimes with stems up to 30 cm in height. The flexible, pliable, yellow-green to green leaves are 30 to 60 cm long and 0.5 to 1.5 cm wide. They form fine fibers on the leaf margins.

The racemose inflorescence that begins in the leaves protrudes over the leaves and is 1 to 1.5 meters high. The pendulous, bell-shaped, spherical, white to cream-colored flowers are 5 to 6 cm in length and 2 to 2.5 cm in diameter. This subspecies already blooms in its youth stage, while the subspecies Yucca baileyi subsp. baileyi flowers in the adult stage. The flowering period extends from May to June.

Occurrence

Yucca baileyi subsp. intermedia is distributed in the state of New Mexico in plains and on flat hills in different soils on the edge of coniferous forests with pine and juniper species at altitudes between 1500 and 2000 meters. It grows together with Toumeya papyracantha , Mammillaria wrightii , Echinocereus fendleri , Echinocereus triglochidiatus , Echinocereus viridiflorus and various other species of cactus .

Yucca baileyi subsp. intermedia is frost hardy to minus 18 ° C in Central Europe . It is rare in the collections.

Systematics

The botanical name Yucca baileyi subsp. intermedia indicates the intermediate form.

The description by Fritz Hochstätter under the name Yucca baileyi subsp. intermedia was published in 1998.

Synonyms

  • Yucca intermedia McKelvey , 1947
  • Yucca baileyi var. Ramosa McKelvey , 1947
  • Yucca baileyi var. Intermedia Reveal , 1977

photos

  • Yucca baileyi distribution area

  • Yucca baileyi subsp. intermedia with opened capsule fruits in New Mexico

literature

  • Yucca baileyi subsp. intermedia . Fritz Hochstätter (Ed.): Yucca (Agavaceae) . Volume 1 USA, self-published. 2000, pp. 46–47, photo material p. 45, description p. 213, p. 236. ISBN 3-00-005946-6 .

Individual evidence

  1. ↑ Cactaceae Review IRT 1 (2): 21. 1998.
  2. ↑ Yuccas of the Southwest US 2: 116-121. 1947
  3. ↑ Yuccas of the Southwest US 2: 116. 1947
  4. ↑ Intermountain Flora, Vascular Plants of the Intermountain West: 532, 1977.

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