Pediocactus peeblesianus subsp. fickeiseniorum

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Pediocactus peeblesianus subsp. fickeiseniorum
Navajoa peeblesiana ssp fickeiseniorum fh 051 AZ B.jpg

Pediocactus peeblesianus subsp. fickeiseniorum

Systematics
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Cacteae
Genre : Pediocactus
Type : Pediocactus peeblesianus
Subspecies : Pediocactus peeblesianus subsp. fickeiseniorum
Scientific name
Pediocactus peeblesianus subsp. fickeiseniorum
( Backeb. Ex Hochstätter ) Lüthy

Pediocactus peeblesianus subsp. fickeiseniorum is a subspecies of the plant species Pediocactus peeblesianus in the cactus family(Cactaceae). English common names are "Fickeisen Cactus" and "Navajo Cactus". The subspecies is threatened and was included in Appendix I of the Washington Convention for the Protection of Endangered Species.

description

The spherical to oval growing Pediocactus peeblesianus subsp. fickeiseniorum is 2 to 6.5 cm long and 2 to 5.5 cm wide. The upward-pointing corky central spine is characteristic. The yellow, tubular flowers are associated with the subspecies Pediocactus peeblesianus subsp. peeblesianus identical. They have a length and a diameter of 1.5 to 2.5 cm. The subspecies grows in a limited area in the Grand Canyon area and is geographically isolated from the subspecies Pediocactus peeblesianus subsp. peeblesianus and Pediocactus peeblesianus subsp. menzelii .

Geophytic features as in representatives of the genus Pediocactus section Pediocactus ( Pediocactus paradinei , Pediocactus knowltonii ) and the section Rhytidospermae ( Pediocactus bradyi and its subspecies) become clear. The flowering time is in April.

Pediocactus peeblesianus subsp. fickeiseniorum is hardy to minus 20 ° C when dry. Real-root cultivation in Europe is possible.

distribution

Pediocactus peeblesianus subsp. fickeiseniorum is one of the rarest and smallest subspecies in the United States. The subspecies grows endemically in Arizona on plains in grasslands or limestone hills at altitudes of 1400 to 1700 m and is associated with Echinocereus triglochidiatus , Echinocereus engelmannii , Escobaria vivipara , various Opuntia species and Yucca baccata .

Systematics

The subspecies is named in honor of Norman and Florence Fickeisen, the co-discoverers. It was first described as Navajoa fickeisenii in 1960 by Curt Backeberg . However, this was invalid according to the rules of the ICBN . A correct publication as Navajoa peeblesiana var. Fickeiseniorum took place in 1994 by Fritz Hochstätter . In 1999 Jonas Martin Lüthy placed the variety, which has meanwhile been raised to the rank of a subspecies, in the genus Pediocactus .

Synonyms are:

  • Navajoa fickeisenii Backeb. (1960, nom. Invalid ICBN -Article 37.1)
  • Pediocactus peebesianus var. Fickeisenii L.D.Benson (1962, nom. Inval. ICBN -Article 37.1)
  • Toumeya fickeisenii (Backeb.) WHEarle (1963, nom. Inval. ICBN -Article 37.1)
  • Pediocactus peeblesianaus var. Fickeiseniae L.D.Benson (1969 nom. Inval. ICBN -Article 37.1)
  • Navajoa peeblesiana var. Fickeiseniorum Hochstätter (1994, Basionym )
  • Navajoa peeblesiana subsp. fickeiseniorum (Hochstätter) Hochstätter (1995)
  • Neonavajoa peeblesiana var. Fickeiseniorum (Hochstätter) Doweld (1999)

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. English.
  • Fritz Hochstätter (Ed.): The Genera Pediocactus, Navajoa, Toumeya . Self-published, 1995. English.
  • Fritz Hochstätter (Ed.): The Genera Pediocactus, Navajoa, Toumeya . English with a German summary. Self-published, 2007, ISBN 978-3-000212444 .

Individual evidence

  1. ↑ Johnas M. Lüthy: Some new cactus names . In: Cacti and other succulents . Volume 50, number 11, 1999, p. 278.
  2. ^ Curt Backeberg: Another Navajoa discovered . In: Cactus and Succulent Journal of Great Britain . Volume 22, Number 3, 1960, pp. 49, 54
  3. ↑ Cact. Succ. J. (US) 34 (2): 59-60. 1962
  4. ↑ Cacti of the southwest, Arizona Cactus & Native Flora Society Science Bulletin No. 4:98 (Feb.) 1963.
  5. ↑ The Cacti of Arizona ed 3: 24, 186, 187. 1969 nom. ill. (Art. 53.1) a later homonym of Pediocactus peeblesianus var. Fickeiseniorum (Backeb.) LDBenson (1962). Type: USA, Arizona, Coconino County, w of Cameron, watershed of the Little Colorado River; Jun 28, 1957, Lyman & Robert Benson 15745 (POM 285856) & Apr 21, 1961, Lyman & Evelyn L. Benson 16086 (POM 299969).
  6. ↑ Succulenta 74 (3) 131-142. 1994. (fickeisenii).
  7. ↑ The genus Navajoa . In: Cacti and other succulents . Volume 46, number 5, 1995, p. 116, (as fickeisenii ).
  8. ↑ Sukkulenty (Moscow) 2 (2) (numbered 2 (3): 43. (25 Dec). 1999.