# Trichocereinae

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Subtribe of cacti

Trichocereinae Haageocereus pacalaensis of the tribe Trichocereeae. Scientific classification Kingdom: Plantae Clade: Embryophytes Clade: Tracheophytes Clade: Spermatophytes Clade: Angiosperms Clade: Eudicots Order: Caryophyllales Family: Cactaceae Subfamily: Cactoideae Tribe: Cereeae Subtribe: Trichocereinae Buxb. (1958) Type genus Trichocereus Genera See text

**Trichocereinae** is a [subtribe](/source/Subtribe) of [cactus](/source/Cactus) that are particular to [South America](/source/South_America).[1] There are 28 recognized genera in this subtribe.

## Description

Arborescent to shrubby, Trichocereinae normally form unsegmented, spherical to columnar stems that are usually ribbed, tuberculate, or ribbed-warty.

The small to fairly large, regular or bilaterally symmetrical flowers appear laterally or below the apex and open day or night. The flower cup is scaled or covered with hair.

The fruits are fleshy to berry-like and sometimes burst open lengthwise. They contain small to medium-sized seeds that vary in shape. Hilum and micropyle of seeds are fused to united. Appendages are usually absent. A strophic is present in some.[2]

## Genera

The composition of the subtribes of the tribe [Cereeae](/source/Cereeae) varies. The list below is based on genera accepted by [Plants of the World Online](/source/Plants_of_the_World_Online) as of March 2025[\[update\]](https://en.wikipedia.org/w/index.php?title=Trichocereinae&action=edit).[3] Most were placed in subtribe Trichocereinae by Lendel in 2013. *[Reicheocactus](/source/Reicheocactus)* (listed here) was not included in Lendel's analysis, and was described as basal to the subtribe.[1] *[Pygmaeocereus](/source/Pygmaeocereus)* was placed in Trichocereinae in a 2023 study.[4]

Image Genus Acanthocalycium Backeb. 1936 Arthrocereus A.Berger 1929 Borzicactus Riccob. 1909 Chamaecereus Britton & Rose 1922, synonym of Echinopsis Cephalocleistocactus F.Ritter Cleistocactus Lem. 1861 Echinopsis Zucc. 1837 Espostoa Britton & Rose 1920 Haageocereus Backeb. 1933 Harrisia Britton 1908 publ. 1909 Lasiocereus F.Ritter (uncertainly in this subtribe[4]) Leucostele Backeb. 1953 Lobivia Britton & Rose 1922 Loxanthocereus Backeb. 1937 Matucana Britton & Rose 1922 Mila Britton & Rose 1922 Oreocereus Riccob. 1909 Pygmaeocereus H.Johnson & Backeb. Rauhocereus Backeb. 1956 publ. 1957 Reicheocactus Backeb. 1942 Samaipaticereus Cárdenas Setiechinopsis Backeb. ex de Haas 1940 Soehrensia Backeb. 1938, synonym of Echinopsis Trichocereus (A.Berger) Riccob. 1909 Vatricania Backeb. 1950 Weberbauerocereus Backeb. 1942 Yungasocereus F.Ritter 1980

## Intergeneric hybrids

Naturally occurring hybrids between genera in the subtribe include:[5]

- [× *Borzicana*](/source/%C3%97_Borzicana) M.H.J.van der Meer = *Borzicactus* × *Matucana*

- [× *Haagespostoa*](/source/%C3%97_Haagespostoa) G.D.Rowley = *Haageocereus* × *Espostoa*

- [× *Harricereus*](https://en.wikipedia.org/w/index.php?title=%C3%97_Harricereus&action=edit&redlink=1) M.H.J.van der Meer = *Harrisia* × *Cereus*

- [× *Leia*](https://en.wikipedia.org/w/index.php?title=%C3%97_Leia&action=edit&redlink=1) M.H.J.van der Meer = *Leucostele* ×*Sohrensia*

- [× *Leucomoza*](/source/%C3%97_Leucomoza) M.H.J.van der Meer = *Denmoza* × *Leucostele*

- [× *Oreonopsis*](https://en.wikipedia.org/w/index.php?title=%C3%97_Oreonopsis&action=edit&redlink=1) G.D.Rowley = *Echinopsis* × *Oreocereus*

- [× *Raustoa*](/source/%C3%97_Raustoa) M.H.J.van der Meer = *Rauhocereus* × *Espostoa*

- [× *Weberbostoa*](https://en.wikipedia.org/w/index.php?title=%C3%97_Weberbostoa&action=edit&redlink=1) G.D.Rowley = *Weberbauerocereus* × *Espostoa*

- [× *Weinganopsis*](https://en.wikipedia.org/w/index.php?title=%C3%97_Weinganopsis&action=edit&redlink=1) G.D.Rowley = *Weingartia* × *Echinopsis*

- [× *Yungastocactus*](https://en.wikipedia.org/w/index.php?title=%C3%97_Yungastocactus&action=edit&redlink=1) G.D.Rowley *Yungasocereus* × *Cleistocactus*

Artificial hybrids include:

- [× *Chamaelobivia*](/source/%C3%97_Chamaelobivia) Y.Itô = *Chamaecyparis* × *Lobivia*[6]

- [× *Cleistopsis*](https://en.wikipedia.org/w/index.php?title=%C3%97_Cleistopsis&action=edit&redlink=1) Strigl = *Cleistocactus* × *Echinopsis*.

- [× *Trichopsis*](https://en.wikipedia.org/w/index.php?title=%C3%97_Trichopsis&action=edit&redlink=1) Y.Itô = *Echinopsis* × *Trichocereus*[7]

- [× *Harrisinopsis*](https://en.wikipedia.org/w/index.php?title=%C3%97_Harrisinopsis&action=edit&redlink=1) G.D.Rowley = *Echinopsis* × *Harrisia*

## References

1. ^ [***a***](#cite_ref-Lendel2013_1-0) [***b***](#cite_ref-Lendel2013_1-1) Lendel, Anita (2013). [*South American Cacti in time and space: studies on the diversification of the tribe Cereeae, with particular focus on subtribe Trichocereinae (Cactaceae)*](https://www.zora.uzh.ch/id/eprint/93287) (Dr. sc. nat. thesis). University of Zurich. [doi](/source/Doi_(identifier)):[10.5167/UZH-93287](https://doi.org/10.5167%2FUZH-93287). Retrieved 2023-10-10.

1. **[^](#cite_ref-Anderson_Eggli_2005_p._58-59_2-0)** Anderson, Edward F.; Eggli, Urs (2005). *Das grosse Kakteen-Lexikon* (in German). Stuttgart (Hohenheim): Ulmer. pp. 58–59. [ISBN](/source/ISBN_(identifier)) [3-8001-4573-1](https://en.wikipedia.org/wiki/Special:BookSources/3-8001-4573-1).

1. **[^](#cite_ref-POWO_30000028-2_3-0)** ["Cactaceae Juss"](https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30000028-2). *Plants of the World Online*. The Trustees of the Royal Botanic Gardens, Kew. Retrieved 2025-03-29.

1. ^ [***a***](#cite_ref-RomeTaylZappTelh23_4-0) [***b***](#cite_ref-RomeTaylZappTelh23_4-1) 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-5)** ["Cactaceae Juss. | Plants of the World Online | Kew Science"](http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30000028-2). *Plants of the World Online*. Retrieved 2025-12-06.

1. **[^](#cite_ref-POWO_296390-2_6-0)** ["*× Chamaelobivia* Y.Itô"](http://www.plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names:296390-2). *[Plants of the World Online](/source/Plants_of_the_World_Online)*. [Royal Botanic Gardens, Kew](/source/Royal_Botanic_Gardens%2C_Kew). Retrieved 2023-10-09.

1. **[^](#cite_ref-POWO_893114-1_7-0)** ["*× Trichopsis* Y.Itô"](http://www.plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names:893114-1). *[Plants of the World Online](/source/Plants_of_the_World_Online)*. [Royal Botanic Gardens, Kew](/source/Royal_Botanic_Gardens%2C_Kew). Retrieved 2023-10-10.

## External links

- USDA, ARS, National Genetic Resources Program. [Germplasm Resources Information Network - (GRIN)](https://web.archive.org/web/20041118084041/http://www.ars-grin.gov/cgi-bin/npgs/html/family.pl?1901). National Germplasm Resources Laboratory, Beltsville, Maryland, June 1, 2007.

Taxon identifiers Trichocereeae Wikidata: Q137799 Wikispecies: Trichocereinae GRIN: 1901 iNaturalist: 714036 NCBI: 186277 Open Tree of Life: 801078 Tropicos: 100474527

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