Sclerocactus spinosior

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Sclerocactus spinosior
Blooming specimen of Sclerocactus spinosior with the typical paper spike in Utah.

Blooming specimen of Sclerocactus spinosior with the typical paper spike in Utah.

Systematics
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Cacteae
Genre : Sclerocactus
Type : Sclerocactus spinosior
Scientific name
Sclerocactus spinosior
( Engelm. ) D. Woodruff & LDBenson

Sclerocactus spinosior is a species of the genus Sclerocactus in the cactus family(Cactaceae). The specific epithet spinosior was chosen for the dense thorns. English common names are "Great Basin Eagle-Claw Cactus", "Desert Valley Fishhook Cactus" and "Spinier Devil's-Claw Cactus".

description

The spherical, oval to cylindrical growing Sclerocactus spinosior reaches heights of growth of 5 to 15 cm and a diameter of 5 to 10 cm. The tubular flowers are 3 to 5 cm long and 1 to 3 cm in diameter. The bloom bracts are purple to purple in color. The flowering period begins at the end of April.

Sclerocactus spinosior is closely related to Sclerocactus pubispinus and Sclerocactus whipplei and is a member of the Sclerocactus section . In contrast to the yellow- blooming Sclerocactus pubispinus, it blooms violet to purple in color. The dominant, upright, paper-like central spine is typical.

distribution

Sclerocactus spinosior grows in the Great Basin Desert in Utah in the typical "sagebrush" in limestone soils on flat hills at altitudes between 1500 and 2000 meters. This species is often associated with Escobaria vivipara subsp. arizonica , Echinocereus triglochidiatus , Yucca harrimaniae , Yucca harrimaniae subsp. gilbertiana and various Opuntia species.

Systematics

The first description by George Engelmann under the name Echinocactus whipplei var. Spinosior was published in 1863. The American botanists Charles Hercules Boissevain and D. Davidson placed it in 1940 as Sclerocactus whipplei var. Spinosior in the genus Sclerocactus . With Sclerocactus pubispinus var. Spinosior , another synonym followed in 1984 by Stanley Larson Welsh . Valid description as Sclerocactus spinosior was published by D. Woodruff and Lyman David Benson in 1976.

According to Fritz Hochstätter, the following subspecies are distinguished:

Danger

Both subspecies Sclerocactus spinosior subsp. spinosior and Sclerocactus spinosior subsp. blainei are endangered. In the Red List of Threatened Species of the IUCN , the species is listed as " Least Concern (LC) ". H. listed as not endangered.

photos

Sclerocactus spinosior :

  • Young plant with flowers in Utah.

  • In full bloom in Utah.

  • With typical tubular flowers.

  • In culture.

literature

  • Fritz Hochstätter (Ed.): At the locations of Pediocactus and Sclerocactus . Self-published, 1989.
  • Fritz Hochstätter (Ed.): The Genus Sclerocactus . English with a German summary. Self-published, 2005, ISBN 3-00-016153-8 .

Individual evidence

  1. ↑ Trans. Acad. Sci. St. Louis .2: 199.1863
  2. ^ Colorado Cacti . 51-52. 1940.
  3. ↑ Great Basin Naturalist 44: 67-68. 1984.
  4. ↑ Cact. Succ. J. (US) 48: 131, 1976.
  5. ↑ F. Hochstätter. The Genus Sclerocactus , pp. 50–51, photo material pp. 202–217, 240, 246, first description p. 286, p. 311. 2005.
  6. ↑ Sclerocactus spinosior in the IUCN Red List of Threatened Species 2013.2. Listed by: Butterworth, C. & Porter, JM, 2010. Retrieved December 30, 2013.

Web links

Commons : Sclerocactus spinosior  - collection of images, videos and audio files