# Arrojadoa

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Genus of cacti

Arrojadoa Arrojadoa penicillata 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: Arrojadoa Britton & Rose, (1920) Species See text. Synonyms[1] Arrojadoopsis Guiggi Viridicereus Guiggi

***Arrojadoa*** is a [genus](/source/Genus) of [cacti](/source/Cactus), comprising 9 [species](/source/Species).[1] It is named after the Brazilian botanist [Miguel Arrojado Lisboa](https://en.wikipedia.org/w/index.php?title=Miguel_Arrojado_Lisboa&action=edit&redlink=1) (1872–1932) who was superintendent of the Brazilian Railways at the time that Britton and Rose described the genus in 1920.[2] The genus occurs only in northern Brazil and is found at rocky places, under [shrubs](/source/Shrub), which support their frail stalk. They are [subtropical](/source/Subtropical) plants, with very little frost tolerance.

## Description

The species often have frail stalks that can be upright or procumbent, reaching 2 m high and about 2 to 5 cm thick. There are from 10 to 15 ribs, and ramifications are rare, and usually occur from the base.

The [flowers](/source/Flower) are nocturnal and tube-like, measuring 1 to 3 cm in length and 0.5 to 1 cm in diameter. Flower colors can be pink or carmine. The fruit is [berry](/source/Berry_(botany))-like, spherical with a maximal diameter of 1.5 cm, and pink or red when ripe.

## Species

As of 2025[\[update\]](https://en.wikipedia.org/w/index.php?title=Arrojadoa&action=edit), [Plants of the World Online](/source/Plants_of_the_World_Online) accepted the following species:[1] (The species *Arrojadoa luetzelburgioides* described in 2024[3] was not yet accepted by Plants of the World Online as of January 2026[\[update\]](https://en.wikipedia.org/w/index.php?title=Arrojadoa&action=edit).)

Image Scientific name Distribution Arrojadoa albiflora Buining & Brederoo Brazil Arrojadoa dinae Buining & Brederoo Brazil Arrojadoa eriocaulis Buining & Brederoo Northern Minas Gerais – Brazil Arrojadoa luetzelburgioides N.P.Taylor & Zappi Bahia Arrojadoa marylaniae Soares Filho & M.Machado Bahia, Minas Gerais – Brazil Arrojadoa multiflora F.Ritter Bahia – Brazil Arrojadoa olsthoorniana Hofacker, M.Machado & R.Pontes south Bahia – Brazil Arrojadoa penicillata Bahia – Brazil Arrojadoa rhodantha Bahia, Minas Gerais, Piaui – Brazil

## Formerly included

- *Arrojadoa aureispina* = *Arrojadoa rhodantha*

- *Arrojadoa bahiensis* = *[Pierrebraunia bahiensis](/source/Pierrebraunia_bahiensis)*

- *Arrojadoa beateae* = *Arrojadoa dinae*

- *Arrojadoa canudosensis* = *Arrojadoa rhodantha*

- *Arrojadoa eddie-estevesii* = *[Pilosocereus eddie-estevesii](/source/Pilosocereus_eddie-estevesii)*

- *Arrojadoa flava* = *Pierrebraunia bahiensis* subsp. *flava*

- *Arrojadoa heimenii* = *Arrojadoa dinae*

- *Arrojadoa hofackeriana* = *[Micranthocereus hofackerianus](/source/Micranthocereus_hofackerianus)*

- *Arrojadoa horstiana* = *Arrojadoa rhodantha*

- *Arrojadoa leucostele* = *[Stephanocereus leucostele](/source/Stephanocereus_leucostele)*

- *Arrojadoa luetzelburgii* = *[Lagenosocereus luetzelburgii](https://en.wikipedia.org/w/index.php?title=Lagenosocereus_luetzelburgii&action=edit&redlink=1)*

- *Arrojadoa polyantha* = *[Micranthocereus polyanthus](/source/Micranthocereus_polyanthus)*

- *Arrojadoa pusilliflora* = *[Floribunda pusilliflora](/source/Floribunda_pusilliflora)*

- *Arrojadoa rosenbergeriana* = *[Arrojadoa eriocaulis](https://en.wikipedia.org/w/index.php?title=Arrojadoa_eriocaulis&action=edit&redlink=1)*

- *Arrojadoa theunisseniana* = *Arrojadoa rhodantha*

- *Arrojadoa violaciflora* = *[Viridicereus violaciflorus](/source/Viridicereus_violaciflorus)*

## Cultivation

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These tropical cacti are ideal for hanging baskets because of their snake like growth, but they are difficult to cultivate. They grow relatively rapidly in good conditions. Propagation is done more by seed than by cuttings. It grows best on slightly humid soil and with plenty of watering from spring to autumn. In winter it should be left without water and at a minimal temperature of 10 °C.[4]

## References

1. ^ [***a***](#cite_ref-POWO_297007-2_1-0) [***b***](#cite_ref-POWO_297007-2_1-1) [***c***](#cite_ref-POWO_297007-2_1-2) ["*Arrojadoa* Britton & Rose"](https://powo.science.kew.org/taxon/297007-2). *[Plants of the World Online](/source/Plants_of_the_World_Online)*. [Royal Botanic Gardens, Kew](/source/Royal_Botanic_Gardens%2C_Kew). Retrieved 13 August 2025.

1. **[^](#cite_ref-2)** ["On-line Guide to the positive identification of Members of the Cactus Family"](http://www.cactiguide.com/cactus/?genus=Arrojadoa).

1. **[^](#cite_ref-3)** Taylor, Nigel P.; Zappi, Daniela C.; Ligório Sant'Ana, Afonso Maria de (2024). ["Arrojadoa luetzelburgioides, a new species allied to A. multiflora (Cactaceae) and a key to the recently expanded genus"](https://bioone.org/journals/bradleya/volume-2024/issue-42/brad.n42.2024.a5/Arrojadoa-luetzelburgioides-a-new-species-allied-to-A-multiflora-Cactaceae/10.25223/brad.n42.2024.a5.short). *Bradleya* (42). [doi](/source/Doi_(identifier)):[10.25223/brad.n42.2024.a5](https://doi.org/10.25223%2Fbrad.n42.2024.a5).

1. **[^](#cite_ref-4)** ["Arrojadoa rhodantha"](http://www.llifle.com/Encyclopedia/CACTI/Family/Cactaceae/4847/Arrojadoa_rhodantha).

- Anderson, Edward F. (2001), *The Cactus Family*, Pentland, Oregon: Timber Press, [ISBN](/source/ISBN_(identifier)) [978-0-88192-498-5](https://en.wikipedia.org/wiki/Special:BookSources/978-0-88192-498-5)

## External links

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

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

- [https://web.archive.org/web/20120602032609/http://www.columnar-cacti.org/arrojadoa/index.html](https://web.archive.org/web/20120602032609/http://www.columnar-cacti.org/arrojadoa/index.html)

- [http://www.cactiguide.com/cactus/?genus=Arrojadoa](http://www.cactiguide.com/cactus/?genus=Arrojadoa)

Taxon identifiers Arrojadoa Wikidata: Q135634 Wikispecies: Arrojadoa BioLib: 105560 CoL: 338S EoL: 5109771 GBIF: 3231933 GRIN: 991 iNaturalist: 184398 IPNI: 297007-2 ITIS: 907018 NCBI: 176261 Open Tree of Life: 334874 POWO: urn:lsid:ipni.org:names:297007-2 WFO: wfo-4000003126 WoRMS: 1078710

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