Pediocactus paradinei

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Pediocactus paradinei
Pediocactus paradinei rarely blooms pink in Arizona

Pediocactus paradinei rarely blooms pink in Arizona

Systematics
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Cacteae
Genre : Pediocactus
Type : Pediocactus paradinei
Scientific name
Pediocactus paradinei
BWBenson

Pediocactus paradinei is a species of the genus Pediocactus in the cactus family(Cactaceae). The specific epithet paradinei refers to the discoverer of the species Paradine . English common names are "Bristly Plains Cactus", "Houserock Valley Cactus", "Kaibab Pincushion Cactus", "Paradine Cactus" and "Park Pincushion Cactus".

description

The spherical, pressed growing Pediocactus paradinei becomes 2 cm to 6 cm long and in diameter. The characteristic, variable hair-like spines of the central spines are unique.

The yellow bell-shaped flowers are 1.5 cm long and in diameter. The flower color is rarely pink.

In some specimens the typical thorns are not pronounced, so that it can easily be confused with the closely related Pediocactus simpsonii or Escobaria vivipara . Geophytic features as well as other representatives of the Pediocactus section ( Pediocactus knowltonii ) and the Rhytidospermae section ( Pediocactus bradyi and subspecies) become clear. Pediocactus paradinei is hardy to minus 20 ° C when dry. Real-root cultivation in Europe is possible.

Distribution, systematics and endangerment

Pediocactus paradinei is Navajoan desert on the Kaibabplateau in Arizona at altitudes from 1,600 to 2,000 meters endemic spread. It grows between Gramma grass on limestone soil on flat hills in the typical "Sagebrush Desert" in the open "Juniper-Pinyon Woodland". Associated with Sclerocactus whipplei subsp. busekii , Navajoa subsp., Escobaria missouriensis subsp. marstonii , Escobaria vivipara subsp. kaibabensis , Echinocereus engelmannii var. variegatus , various Opuntia species, Yucca baccata and other species.

The first description was in 1957 by Bernard W. Benson . A synonym for the species is Pilocanthus paradinei B.W.Benson & K.Backeb. . The kind Pediocactus paradinei is within the genus Pediocactus in the Section Pediocactus asked.

Pediocactus paradinei is threatened and has been included in Appendix I of the Washington Convention on Endangered Species. In the Red List of Threatened Species of IUCN is the species as " Endangered (EN) ," d. H. listed as endangered.

photos

  • In late April in bloom in Arizona.

  • Juvenile specimen of Pediocactus paradinei with buds in Arizona.

  • With typical “hair-like” thorns in Arizona.

  • Size comparison in Arizona.

  • In culture.

  • With pink blossoms in a frost-hardy culture.

literature

  • Fritz Hochstätter (Ed.): At the locations of Pediocactus and Sclerocactus . Self-published, 1989.
  • Fritz Hochstätter (Ed.): The Genera Pediocactus, Navajoa, Toumeya . English with a German summary. Self-published, 2007, ISBN 978-3-00-021244-4 .

Individual evidence

  1. ^ Hochstätter, The Genera Pediocacactus , Navajoa , Toumeya . Pp. 37, 38, photomaterial pp. 188-197, p. 354. 2007.
  2. ^ Cactus and Succulent Journal . Volume 29, Number 1, 1957, p. 136.
  3. ↑ Pediocactus paradinei in the Red List of Threatened Species of the IUCN 2013.2. Listed by: Butterworth, C. & Porter, JM, 2010. Retrieved December 29, 2013.

Web links

Commons : Pediocactus paradinei  - collection of images, videos and audio files