Sclerocactus glaucus

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Sclerocactus glaucus
Sclerocactus glaucus with flowers in Colorado.

Sclerocactus glaucus with flowers in Colorado.

Systematics
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Cacteae
Genre : Sclerocactus
Type : Sclerocactus glaucus
Scientific name
Sclerocactus glaucus
( K.Schum. ) LDBenson

Sclerocactus glaucus is a species of the genus Sclerocactus in the cactus family(Cactaceae). The botanical name glaucus was chosen for the typical blue-green habit color . An English common name is "Uinta Basin Hookless Cactus".

Sclerocactus glaucus is endangered and included in Appendix I of the Washington Convention for the Protection of Endangered Species.

description

The spherical to egg-shaped growing Sclerocactus glaucus reaches heights of growth 5 to 10 cm long and 5 to 8 cm in diameter. The funnel-shaped, pink flowers have a length and a diameter of 3 to 6 cm. The flowering period begins at the end of April.

Sclerocactus glaucus is closely related to Sclerocactus wrightiae and Sclerocactus parviflorus and is a representative of the Parviflori section . The pubescent thorns in the juvenile phase is an important feature of this species. It differs from the juvenile thorns of Sclerocactus wetlandicus and Sclerocactus parviflorus .

distribution

Sclerocactus glaucus is found on the Grand Mesa in Colorado near the Colorado River and Gunnison Rivers on flat, stony, loamy hills at altitudes between 1400 and 2000 meters. This species is often associated with Pediocactus simpsonii , Escobaria missouriensis , Echinocereus triglochidiatus f. inermis and various types of yucca and opuntia .

Systematics

The first description as Echinocactus glaucus by Karl Moritz Schumann was published in 1898. However, Joseph Anton Purpus had already mentioned the name in a short article in 1895. The American botanist J. Whitman Evans placed it in 1939 as Sclerocactus franklinii in the genus Sclerocactus . The valid description was published by Lyman David Benson in 1966.

Danger

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 glaucus in Colorado:

  • Pressed spherical specimen.

  • In full bloom.

  • Young plants with bloom.

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 3-000161538 .

Individual evidence

  1. ^ Karl Moritz Schumann: Complete description of the cacti . 1898, pp. 438-439 ( online ).
  2. ↑ A. Purpus: Outdoor cacti . In: Monthly for cactus science . Volume 5, 1895, p. 106 ( online ).
  3. ↑ Cact. Succ. J. (US) 11:74. 1939
  4. ↑ Cact. Succ. J. (US) 38: 53-54. 1966
  5. ↑ Sclerocactus glaucus in the Red List of Threatened Species of the IUCN 2013.2. Listed by: Butterworth, C. & Porter, JM, 2010. Retrieved December 30, 2013.

Web links

Commons : Sclerocactus glaucus  - Collection of images, videos and audio files