Echinocereus rayonesensis

Echinocereus rayonesensis is a species of cactus native to Mexico.[2]

Echinocereus rayonesensis
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Echinocereus
Species:
E. rayonesensis
Binomial name
Echinocereus rayonesensis
Synonyms
  • Echinocereus parkeri subsp. rayonesensis (N.P.Taylor) D.Felix & W.Blum 2011

Description

Echinocereus rayonesensis grows with many shoots and branches at ground level. The upright, cylindrical shoots are 12 to 28 centimeters long and have a diameter of 2.5 to 4.5 centimeters. They are hidden by the dense thorns. There are ten to 15 ribs that are tuberculated. The hair-like or slender thorns on them are glassy white to yellowish. The five to nine downward-facing central spines are 3 to 5 centimeters long. The 15 to 25 radial spines, occasionally more, are 0.7 to 1.5 centimeters long.

The broadly funnel-shaped flowers are somewhat purple-magenta in color and have a white throat. They appear on the sides of the shoots, are 2.5 to 6 centimeters long and reach 2.8 to 6 centimeters in diameter. The elongated fruits are olive green to brown.[3]

Distribution

Echinocereus rayonesensis is widespread in the Mexican state of Nuevo León in the Rayones Valley.

Taxonomy

The first description by Nigel Paul Taylor was published in 1988.[4] The specific epithet "rayonesensis" refers to the occurrence of the species in the Mexican Valley of Rayones.


References
  1. SG), Succulent Plants; Biología, Héctor Hernández (Instituto de (2009-11-17). "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species. Retrieved 2024-06-24.
  2. "Echinocereus rayonesensis N.P.Taylor". Plants of the World Online. Retrieved 2024-06-24.
  3. Anderson, Edward F.; Eggli, Urs (2005). Das grosse Kakteen-Lexikon (in German). Stuttgart (Hohenheim): Ulmer. p. 205. ISBN 3-8001-4573-1.
  4. Taylor, N.P. (1988). "Supplementary notes on Mexican Echinocereus (1)". Bradleya. 6 (6): 65–84. doi:10.25223/brad.n6.1988.a3. ISSN 0265-086X.
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