Pilosocereus polygonus
| Pilosocereus polygonus | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Genus: | Pilosocereus |
| Species: | P. polygonus
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| Binomial name | |
| Pilosocereus polygonus (Lam.) Byles & G.D.Rowley
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| Synonyms[1] | |
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List
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Pilosocereus polygonus is a species of Pilosocereus. Its synonyms include Pilosocereus royenii,[1] which has also been treated as a separate species.[2] The species is native to Hispaniola,[1][3] but it is found elsewhere in the Caribbean. English names include dildo cactus,[4] pipe organ cactus,[5] and Royen's tree cactus.[6]
Taxonomy
[edit]Pilosocereus polygonus was first described by Jean-Baptiste Lamarck in 1785 as Cactus polygonus. It was transferred to the genus Pilosocereus in 1957.[1] The taxonomy of the species is somewhat confused. P. polygonus and P. royenii have been treated differently by different sources. In 2001, Anderson described them as separate species.[7] As of June 2025[update], Plants of the World Online regarded them as synonyms.[1] Populations in Mexico treated as P. royenii by some authors are considered to be P. gaumeri by others,[8] including Plants of the World Online as of June 2025[update].[9]
Subspecies
[edit]No subspecies were accepted by Plants of the World Online as of June 2025[update].[1] Those that have been proposed are treated as full species:
- Pilosocereus polygonus subsp. brevispinus = Pilosocereus brevispinus – central Hispaniola[10]
- Pilosocereus polygonus subsp. curtisii = Pilosocereus curtisii – Lesser Antilles[11]
- Pilosocereus polygonus subsp. gaumeri = Pilosocereus gaumeri – southeast Mexico[9]
- Pilosocereus polygonus subsp. jamaicensis = Pilosocereus jamaicensis – Cayman Islands, Jamaica[12]
Conservation
[edit]Under the synonym Pilosocereus royenii, it was assessed in 2011 as "Least Concern".[2]
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In Sebucán -
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Seed-grown at Cactus Island Nursery
References
[edit]- ^ a b c d e f "Pilosocereus polygonus (Lam.) Byles & G.D. Rowley". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2025-06-03.
- ^ a b Taylor, N.P. (2017) [amended version of 2013 assessment]. "Pilosocereus royenii". IUCN Red List of Threatened Species. 2017: e.T152164A121581463. doi:10.2305/IUCN.UK.2017-3.RLTS.T152164A121581463.en. Retrieved 30 November 2022.
- ^ "Pilosocereus polygonus". Tropicos. Retrieved 2021-03-31.
- ^ "Dildo Cactus, Providenciales, Turks & Caicis Islands, 30May-06June2002 - by David J. l'Hoste".
- ^ "Pilosocereus royenii". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 2009-12-04.
- ^ NRCS. "Pilosocereus royenii". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 3 October 2015.
- ^ Anderson, Edward F. (2001). The Cactus Family. Pentland, Oregon: Timber Press. ISBN 978-0-88192-498-5., pp. 585–587
- ^ Lavor, Pâmela; Versieux, Leonardo M. & Calvente, Alice (2020). "Phylogenetic Relationships of Pilosocereus (Cactaceae) and Taxonomic Implications". PlantNow. 1 (2): 52–70. doi:10.6084/m9.figshare.12895124.
- ^ a b "Pilosocereus gaumeri (Britton & Rose) Backeb." Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2025-06-03.
- ^ "Pilosocereus brevispinus Hoxey & Gdaniec". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2025-06-03.
- ^ "Pilosocereus curtisii (Otto) A.R.Franck". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2025-06-03.
- ^ "Pilosocereus jamaicensis Proctor". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2025-06-03.