Pediocactus nigrispinus subsp. beastonii

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Pediocactus nigrispinus subsp. beastonii
Pediocactus nigrispinus subsp. beastonii specimen with flowers in the Great Basin Desert of Oregon.

Pediocactus nigrispinus subsp. beastonii
specimen with flowers in the Great Basin Desert of Oregon.

Systematics
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Cacteae
Genre : Pediocactus
Type : Pediocactus nigrispinus
Subspecies : Pediocactus nigrispinus subsp. beastonii
Scientific name
Pediocactus nigrispinus subsp. beastonii
( Hochstätter ) Hochstätter

Pediocactus nigrispinus subsp. beastonii is a subspecies of the plant species Pediocactus nigrispinus in the cactus family(Cactaceae). The specific epithet honors Bill Beaston a specialist in the "Oregon Flora". English common names are "Beaston's Cactus" and "Alvord Desert Cactus".

description

Pediocactus nigrispinus subsp. beastonii grows solitary and spherical. It reaches heights of growth of 3 cm to 15 cm and a diameter of 4 to 10 cm. It has several beet roots that branch out into thin fiber roots.

The hermaphrodite, small, bell-shaped flowers are 1 to 2 cm in length and 1 to 2 cm in diameter. The bracts are peach-colored, ivory-white or rarely pink. The flowering time is in May.

Distribution map of Pediocactus nigrispinus and its subspecies.

Systematics and distribution

Pediocactus nigrispinus subsp. beastonii growing endemic in the "Alvord Desert" in Oregon in volcanic substrate on planes or on Sagebrush dominant steep slopes at altitudes from 1,200 to 1,950 meters. In the adjoining southern distribution area, there are transitional forms that are similar to Pediocactus simpsonii subsp. robustior . However, all representatives of the Pediocactus nigrispinus group have stronger spines. Pediocactus nigrispinus subsp. beastonii only grows in Oregon's Alvord Desert .

It is hardy to minus 20 ° C when dry . True-root cultivation is difficult in Europe. The typical subspecies Pediocactus nigrispinus subsp. beastonii is rare in the collections.

Bill Beaston at the discovery site of Pediocactus nigrispinus subsp. beastonii in the Alvord Desert in Oregon (fh 19.1).

The description as Pediocactus nigrispinus subsp. beastonii was made in 1995 by Fritz Hochstätter. A synonym is Pediocactus nigrispinus subsp. puebloensis Hochstätter (1995).

photos

Pediocactus nigrispinus subsp. beastonii :

  • With blossoms in May in Oregon.

  • Site in the Alvord Desert in Oregon.

literature

  • Fritz Hochstätter (Ed.): At the locations of Pediocactus and Sclerocactus . Self-published, 1989.
  • Fritz Hochstätter (Ed.): To the habitats of Pediocactus and Sclerocactus . Self-published, 1990.
  • Fritz Hochstätter (Ed.): The Genera Pediocactus, Navajoa, Toumeya . Self-published, 1995.
  • Fritz Hochstätter (Ed.): The Genera Pediocactus, Navajoa, Toumeya . English with a German summary. Self-published, 2007, ISBN 978-3-000212444 .

Individual evidence

  1. ↑ Pediocactus nigrispinus subsp. beastonii . In: The Genera Pediocactus, Navajoa, Toumeya . 2007. ISBN 978-3-000212444 , pp. 33–34, photo material pp. 173–179, p. 352, first description pp. 319–326.
  2. ^ The Genera Pediocactus, Navajoa, Toumeya . 1995, p. 29.
  3. ^ The Genera Pediocactus, Navajoa, Toumeya . 1995, pp. 152-154.

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