Pelecyphora missouriensis

Secure  (NatureServe)[2]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Pelecyphora
Species:
P. missouriensis
Binomial name
Pelecyphora missouriensis
(Sweet) D.Aquino & Dan.Sánchez
Synonyms[3]
Synonymy
  • Cactus missouriensis (Sweet) Kuntze
  • Coryphantha missouriensis (Scheer) Britton & Rose
  • Coryphantha similis (Engelm.) Britton & Rose
  • Mammillaria missouriensis Sweet
  • Neobesseya missouriensis (Sweet) Britton & Rose
  • Neobesseya similis (Engelm.) Britton & Rose
  • Neomammillaria missouriensis (Sweet) Britton & Rose ex Rydb.
  • Escobaria asperispina (Boed.) D.R.Hunt, syn of subsp. asperispina
  • Escobaria missouriensis (Sweet) D.R.Hunt

Pelecyphora missouriensis, the Missouri foxtail cactus and formerly Coryphantha missouriensis, is a species of low-growing North American cacti.

Description

Pelecyphora missouriensis grows up to 30 centimetres (12 in) high and forms clumps to 3.8–30 centimetres (1.5–11.8 in) or greater in diameter. They are generally larger in the Southwest. The plants are primarily unbranched, except eastern populations that can be profusely branched. The warts are elongated and up to 18 millimeters long. There are 10 to 20 spines that are bright white, pale gray, or pale tan, weathering to gray or yellowish brown.[4] The plant blooms in April to June, with flowers that are pale greenish yellow to yellow-green with midstripes of green or rose-pink to pale brown, flowers are 2.5 to 6.2 centimeters long and in diameter. The red fruits are 1 to 2 centimeters long.[4][5]

Pelecyphora missouriensis has been extirpated from many of its historically known sites by introduced fire ants, suburban development, brush encroachment following fire suppression, and over-grazing.[4]

Subspecies

There are two recognized subspecies.

ImageNameDistribution
Pelecyphora missouriensis subsp. asperispina (Boed.) N.P.TaylorMexico (Coahuila de Zaragoza, Nuevo Leon)
Pelecyphora missouriensis subsp. missouriensisUnited States (Arizona, Colorado, Illinois, Kansas, Missouri, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas, Utah, Wyoming )

Distribution

It is found in along the Missouri River in the tallgrass prairie and shortgrass Great Plains, from Texas to Montana and the Dakotas, and in the Rocky Mountains woodlands of Ponderosa pine (Pinus ponderosa), pinyon-juniper, and Gambel oak (Quercus gambelii) west of it. It is also native to the Southwestern United States in Idaho, Kansas,Arizona, New Mexico, and Utah and Mexico in the states of Coahuila and Nuevo León.[4][6][7]

Taxonomy

It was first described in 1818 by Thomas Nuttall as Cactus mammillaris.[8] The specific epithet missouriensis refers to the occurrence of the species near the Missouri River. However, this description was not valid (nom. illegal ICBN article 53.1), as the name was already given by Carl Linnaeus in 1753.[9] Robert Sweet named the species Mammillaria missouriensis in 1826. In 1978, the species was reclassified as Escobaria missouriensis by David Richard Hunt. David Aquino & Daniel Sánchez moved the species to Pelecyphora based on phylogenetic studies in 2022.[10] Further nomenclature synonyms are Cactus missouriensis (Sweet) Kuntze (1891), Mammillaria missouriensis Sweet ex K.Schum. (1898), Coryphantha missouriensis (Sweet) Britton & Rose (1913), Neobesseya missouriensis (Sweet) Britton & Rose (1923) and Neomammillaria missouriensis (Sweet) Britton & Rose ex Rydb. (1932).


References

  1. ↑ Heil, K.; Terry, M.; Corral-Díaz, R. (2017) [amended version of 2013 assessment]. "Escobaria missouriensis". IUCN Red List of Threatened Species. 2017: e.T151844A121510797. doi:10.2305/IUCN.UK.2017-3.RLTS.T151844A121510797.en. Retrieved 5 November 2023.
  2. ↑ NatureServe (2023). "Escobaria missouriensis". Arlington, Virginia. Retrieved 28 December 2023.
  3. ↑ "Pelecyphora missouriensis (Sweet) D.Aquino & Dan.Sánchez". Plants of the World Online. Retrieved 2023-11-05.
  4. 1 2 3 4 Flora of North America, Missouri foxtail cactus Coryphantha missouriensis . accessed 4.4.2011
  5. ↑ NPIN_Escobaria missouriensis . accessed 4.4.2011
  6. ↑ United States Department of Agriculture plants profile, Escobaria missouriensis . accessed 4.4.2011
  7. ↑ Biota of North America Program, 2014 county distribution map
  8. ↑ Nuttall, Thomas (1818). The genera of North American plants, and a catalogue of the species, to the year 1817. Philadelphia: Printed for the author by D. Heartt. doi:10.5962/bhl.title.290.
  9. ↑ Sweet, Robert (1826). Sweet's Hortus britannicus: or a catalogue of plants cultivated in the gardens of Great Britain, arranged in natural orders. London: J. Ridgway. doi:10.5962/bhl.title.43792.
  10. ↑ Sánchez, Daniel; Vázquez-Benítez, Balbina; Vázquez-Sánchez, Monserrat; Aquino, David; Arias, Salvador (2022-01-21). "Phylogenetic relationships in Coryphantha and implications on Pelecyphora and Escobaria (Cacteae, Cactoideae, Cactaceae)". PhytoKeys. Pensoft Publishers. 188: 115–165. doi:10.3897/phytokeys.188.75739. ISSN 1314-2003. PMC 8799629.
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