Pterocereus
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Echinocereeae
Genus: Pterocereus
T.MacDoug. & Miranda
Species:
P. gaumeri
Binomial name
Pterocereus gaumeri
(Britton & Rose) T.MacDoug. & Miranda
Synonyms
  • Anisocereus gaumeri (Britton & Rose) Backeb. 1960
  • Cereus yucatanensis Standl. 1930
  • Pachycereus gaumeri Britton & Rose 1920

Pterocereus is a monotypic genus of cactus containing the sole species Pterocereus gaumeri.[2]

Description

Pterocereus gaumeri grows tree-shaped with long, slender shoots, has little or no branches and reaches heights of up to 8 meters. It forms a trunk up to 1.5 meters high. The three to four very sharp-edged ribs look wing-like. The areoles on it are far apart from each other. The approximately ten thorns are gray or reddish black and up to 5 centimeters long.

The cylindrical to funnel-shaped, greenish white flowers exude a foul-smelling scent. They open at night and are 8.5 to 9.5 centimeters long. Its pericarpel and floral tube are covered with fleshy, leaf-like scales that have recurved tips, as well as some wool and a few bristles. The spherical fruits are light red.[3]

Subspecies

  • Pterocereus gaumeri subsp. foetidus (T.MacDoug. & Miranda) S.Arias & Terrazas
  • Pterocereus gaumeri subsp. gaumeri

Distribution

Pterocereus gaumeri is distributed in the Mexican states of Yucatán, Chiapas and Veracruz.

Taxonomy

The first description was made in 1920 by Nathaniel Lord Britton and Joseph Nelson Rose.[4] The specific epithet gaumeri honors the American botanist and naturalist George Franklin Gaumer (1850–1929), who discovered the species. Nomenclature synonyms are Anisocereus gaumeri (Britton & Rose) Backeb. (1942) and Pachycereus gaumeri Britton & Rose (1920). Taxonomic synonyms are Cereus yucatanensis Standl. (1930), Pterocereus foetidus T. MacDoug. & Miranda (1954), Anisocereus foetidus (T.MacDoug. & Miranda) W.T.Marshall (1957), Pachycereus foetidus (T.MacDoug. & Miranda) P.V.Heath (1992).[5]

References

  1. ↑ "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species. 2009-04-27. Retrieved 2023-10-29.
  2. ↑ "Pterocereus T.MacDoug. & Miranda". Plants of the World Online. Retrieved 2023-10-29.
  3. ↑ Anderson, Edward F.; Eggli, Urs (2005). Das grosse Kakteen-Lexikon (in German). Stuttgart (Hohenheim): Ulmer. pp. 489–490. ISBN 3-8001-4573-1.
  4. ↑ Britton, Nathaniel Lord; Eaton, Mary E.; Rose, J. N.; Wood, Helen Adelaide (1919). The Cactaceae : descriptions and illustrations of plants of the cactus family. Washington: Carnegie Institution of Washington. doi:10.5962/bhl.title.46288.
  5. ↑ Korotkova, Nadja; Aquino, David; Arias, Salvador; Eggli, Urs; Franck, Alan; Gómez-Hinostrosa, Carlos; Guerrero, Pablo C.; Hernández, Héctor M.; Kohlbecker, Andreas; Köhler, Matias; Luther, Katja; Majure, Lucas C.; Müller, Andreas; Metzing, Detlev; Nyffeler, Reto; Sánchez, Daniel; Schlumpberger, Boris; Berendsohn, Walter G. (2021-08-31). "Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family". Willdenowia. Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. 51 (2). doi:10.3372/wi.51.51208. ISSN 0511-9618. S2CID 237402311.
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