# Espostoopsis

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Genus of cacti

Espostoopsis Conservation status Vulnerable (IUCN 3.1)[1] Scientific classification Kingdom: Plantae Clade: Embryophytes Clade: Tracheophytes Clade: Spermatophytes Clade: Angiosperms Clade: Eudicots Order: Caryophyllales Family: Cactaceae Subfamily: Cactoideae Tribe: Cereeae Subtribe: Cereinae Genus: Espostoopsis Buxb. Species: E. dybowskii Binomial name Espostoopsis dybowskii (Rol.-Goss.) Buxb. Synonyms Of the genus:[2] Gerocephalus F.Ritter Of the species:[3] Austrocephalocereus dyhowskii (Rol.-Goss.) Backeb. Cephalocereus dybowskii (Rol.-Goss.) Britton & Rose Cereus dybowskii Rol.-Goss. Coleocephalocereus dybowskii (Rol.-Goss.) F.H.Brandt Gerocephalus dybowskii (Rol.-Goss.) F.Ritter

***Espostoopsis*** is a [monotypic genus](/source/Monotypic_taxon) of [cactus](/source/Cactus) containing the single [species](/source/Species) ***Espostoopsis dybowskii***. The generic name is formed from [Greek](/source/Greek_language) *opsis* meaning "view", referring to its resemblance to the genus *[Espostoa](/source/Espostoa)*, with which it is often confused. The plant is only known from northern [Bahia](/source/Bahia), [Brazil](/source/Brazil).[1]

## Description

*Espostoopsis dybowskii* grows shrubby and branches from the ground, reaches heights 2 to 4 meters. Their cylindrical trunks have 20 to 28 ribs, reaches up to a diameter of 8 centimeters and completely covered by white hairs. The [areoles](/source/Areole) are covered with dull, yellowish wool and abundant white hairs. The 2 to 3 protruding, needle-like central spines are yellow and 2 to 3 centimeters long. The numerous, short and thin radial spines are hidden in the hairs of the areoles. The cephalium arises laterally and has a length of up to 60 centimeters.

The flowers are white and short tubular to bell-shaped, open at night and are up to 4 centimeters long. The flower tube covered with very small scales. The fruits are almost glabrose, pink fruits with persistent, blackening flower remains are broadly ovate in shape and have a diameter of up to 2.5 centimeters. Fruits contain white flesh and do not tear open. The black, rough-warty seeds are oval to pear-shaped.[4]

## Taxonomy

The genus was first described in 1968 by [Franz Buxbaum](/source/Franz_Buxbaum).[5] The specific epithet *dybowskii* honors the botanist and agricultural scientist [Jean Dybowski](/source/Jean_Dybowski). Its only species was first described in 1909 as *Cereus dybowskii* by Robert Roland-Gosselin.[6] Further [nomenclature synonym](/source/Synonym_(taxonomy)) are *Cephalocereus dybowskii* (Rol.-Goss.) Britton & Rose (1920), *Austrocephalocereus dybowskii* (Rol.-Goss.) Backeb. (1951), *Austrocephalocereus dyhowskii* (Rol.-Goss.) Backeb. (1951), *Gerocephalus dybowskii* (Rol.-Goss.) F.Ritter (1968) and *Coleocephalocereus dybowskii* (Rol.-Goss.) F.H.Brandt (1981).

The genus was formerly placed in subtribe [Trichocereinae](/source/Trichocereinae), but a 2023 [molecular phylogenetic](/source/Molecular_phylogenetics) study found that it belonged to subtribe [Cereinae](/source/Cereinae).[7]

## Distribution and habitat

*Espostoopsis dybowskii* is found growing in granite and quartz outcrops in northern [Bahia, Brazil](/source/Bahia%2C_Brazil) at altitudes of 300 to 750 meters.[8]

## References

1. ^ [***a***](#cite_ref-iucn_status_18_November_2021_1-0) [***b***](#cite_ref-iucn_status_18_November_2021_1-1) Taylor, N.P. (2017). ["*Espostoopsis dybowskii*"](https://www.iucnredlist.org/species/40933/121501760). *[IUCN Red List of Threatened Species](/source/IUCN_Red_List)*. **2017** e.T40933A121501760. [doi](/source/Doi_(identifier)):[10.2305/IUCN.UK.2017-3.RLTS.T40933A121501760.en](https://doi.org/10.2305%2FIUCN.UK.2017-3.RLTS.T40933A121501760.en). Retrieved 18 November 2021.

1. **[^](#cite_ref-POWO_295143-2_2-0)** ["*Espostoopsis* Buxb."](https://powo.science.kew.org/taxon/295143-2) *[Plants of the World Online](/source/Plants_of_the_World_Online)*. [Royal Botanic Gardens, Kew](/source/Royal_Botanic_Gardens%2C_Kew). Retrieved 2023-10-08.

1. **[^](#cite_ref-POWO_133093-1_3-0)** ["*Espostoopsis dybowskii* (Rol.-Goss.) Buxb."](https://powo.science.kew.org/taxon/133093-1) *[Plants of the World Online](/source/Plants_of_the_World_Online)*. [Royal Botanic Gardens, Kew](/source/Royal_Botanic_Gardens%2C_Kew). Retrieved 2023-10-08.

1. **[^](#cite_ref-Anderson_Eggli_2005_p._284–285._4-0)** Anderson, Edward F.; Eggli, Urs (2005). *Das grosse Kakteen-Lexikon* (in German). Stuttgart (Hohenheim): Ulmer. pp. 284–285. [ISBN](/source/ISBN_(identifier)) [3-8001-4573-1](https://en.wikipedia.org/wiki/Special:BookSources/3-8001-4573-1).

1. **[^](#cite_ref-Au_Cactus_Francophone_w613_5-0)** ["Au Cactus Francophone"](https://www.cactuspro.com/lecture/Krainz-Hans/Die-Kakteen-E/page-129.en.html). *Au Cactus Francophone* (in French). Retrieved 2023-12-21.

1. **[^](#cite_ref-France._1908_h488_6-0)** France., Société botanique de (1908). ["Bulletin de la Société botanique de France"](https://www.biodiversitylibrary.org/page/327328). La Société. [ISSN](/source/ISSN_(identifier)) [0037-8941](https://search.worldcat.org/issn/0037-8941). Retrieved 2023-12-21.

1. **[^](#cite_ref-RomeTaylZappTelh23_7-0)** Romeiro-Brito, Monique; Taylor, Nigel P.; Zappi, Daniela C.; Telhe, Milena C.; Franco, Fernando F. & Moraes, Evandro M. (2023). ["Unravelling phylogenetic relationships of the tribe Cereeae using target enrichment sequencing"](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10808018). *Annals of Botany*. **132** (5): 989–1006. [doi](/source/Doi_(identifier)):[10.1093/aob/mcad153](https://doi.org/10.1093%2Faob%2Fmcad153). [PMC](/source/PMC_(identifier)) [10808018](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10808018).

1. **[^](#cite_ref-llifle.com_2013_v003_8-0)** ["Espostoopsis dybowskii"](http://www.llifle.com/Encyclopedia/CACTI/Family/Cactaceae/7944/Espostoopsis_dybowskii). *llifle.com*. 2013-08-04. Retrieved 2023-12-21.

## External links

- Media related to [*Espostoopsis*](https://commons.wikimedia.org/wiki/Category:Espostoopsis) at Wikimedia Commons

- Data related to [*Espostoopsis*](https://species.wikimedia.org/wiki/Espostoopsis) at Wikispecies

Taxon identifiers Espostoopsis Wikidata: Q8178185 Wikispecies: Espostoopsis CoL: 62RDP EoL: 5190059 GBIF: 7284754 GRIN: 4467 iNaturalist: 183489 IPNI: 295143-2 IRMNG: 1086237 ITIS: 906960 NCBI: 432455 Open Tree of Life: 668188 POWO: urn:lsid:ipni.org:names:295143-2 Tropicos: 40006308 WFO: wfo-4000014053 Espostoopsis dybowskii Wikidata: Q137902 Wikispecies: Espostoopsis dybowskii CoL: 3BJJG EoL: 5190060 GBIF: 3960682 GRIN: 410710 iNaturalist: 183490 IPNI: 97843-2 ITIS: 907887 IUCN: 40933 NCBI: 432456 Open Tree of Life: 668190 Plant List: kew-2802441 POWO: urn:lsid:ipni.org:names:133093-1 Species+: 25111 Tropicos: 50178699 WFO: wfo-0000680897

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Adapted from the Wikipedia article [Espostoopsis](https://en.wikipedia.org/wiki/Espostoopsis) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Espostoopsis?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.