The genus Beaucarnea, the ponytail palms

Beaucarnea sp.

The genus Beaucarnea groups the ponytail palms, caudiciform plants from Mexico and Central America recognisable by the swollen base of their trunk, which stores water and often becomes covered in corky bark. Grouped on this site with the agavoids, they are neither palms nor close relatives of the agaves. Plants of the World Online (POWO), the reference database of the Royal Botanic Gardens, Kew, recognises thirteen species, including Beaucarnea recurvata, the ponytail palm or elephant’s foot sold worldwide as a houseplant. Since 2014 the genus has also included the former genus Calibanus: the plant long known as Calibanus hookeri is now Beaucarnea hookeri. Long lumped with Nolina (the name Nolina recurvata is still common in the trade), Beaucarnea is a distinct genus. Threatened in the wild by collection, it has been listed in CITES Appendix II since 2016, and the two former Calibanus species were added in 2025.

Key facts about Beaucarnea

  • Accepted name (POWO): Beaucarnea Lem. (1861)
  • Number of accepted species: 13 according to POWO, including two former Calibanus
  • Former genus names and synonyms: Calibanus Rose, included in Beaucarnea; several species were also published under Nolina (Nolina recurvata, Nolina stricta)
  • Family: Asparagaceae, subfamily Nolinoideae
  • Common names: ponytail palm, elephant’s foot (English); pata de elefante, soyate (Mexican Spanish); pied d’éléphant (French)
  • Natural range: Mexico and Central America (Guatemala, Belize, El Salvador, Nicaragua)
  • CITES: Appendix II; the genus was listed at the 17th Conference of the Parties (Johannesburg, 2016) on a proposal by Mexico, and Beaucarnea hookeri and Beaucarnea glassiana were added at the 20th (Samarkand, 2025)
  • IUCN status: Beaucarnea recurvata Critically Endangered (CR, assessment published in 2020); Beaucarnea olsonii Endangered (EN); other species not verified
  • Documented hardiness: low; Beaucarnea recurvata is rated H1c by the Royal Horticultural Society and recommended for USDA zones 10a to 11b by the University of Florida; horticultural sources report damage below about −5 °C on mature plants in dry soil (see Cultivation)
  • Exposure and soil: full sun or very bright light, very free-draining substrate
  • Toxicity: Beaucarnea recurvata listed as non-toxic to dogs, cats and horses by the ASPCA (see Toxicity and precautions)

Characteristics of the genus Beaucarnea

A Beaucarnea is recognised first by the strongly swollen base of its trunk, the caudex, which acts as a water reserve. Depending on the species, this swelling supports a stem several metres tall with rosettes of narrow leaves at its tips, or stays almost at ground level, as in the former Calibanus.

  • Caudex and bark: in old plants the swollen base becomes covered in thick, fissured, corky bark, which earned the genus the name elephant’s foot. In Beaucarnea olsonii, described in 2016, the massively swollen base narrows abruptly into slender branches.
  • Leaves: long, narrow and linear, grouped in rosettes at the ends of the stems; strongly drooping in Beaucarnea recurvata, hence the name “ponytail palm”, stiffer in other species.
  • Sexuality: the plants are dioecious, meaning that male and female flowers are borne on separate plants; both sexes are therefore needed to obtain seed.
  • Fruits: dry, late-opening capsules, usually with three wings, although some species lack them. The fruits are not berries. This character helps to separate Beaucarnea from Nolina.

Taxonomy and classification

Beaucarnea is a genus accepted by POWO. It belongs to the family Asparagaceae, subfamily Nolinoideae, with Nolina and Dasylirion. These three genera long formed a separate family, the Nolinaceae, now merged into the Nolinoideae; depending on the author, they have also been placed in the Agavaceae or the Ruscaceae.

Beaucarnea and Nolina: two distinct genera

Several authors merged Beaucarnea and Nolina into a single genus, hence the names Nolina recurvata and Nolina stricta still seen in the trade. In 2014, Rojas-Piña, Olson, Alvarado-Cárdenas and Eguiarte published in the journal Taxon a study based on DNA sequences and morphology showing that Beaucarnea forms a well-supported group, distinct from Nolina. POWO follows this conclusion.

The inclusion of Calibanus

The same study showed that Calibanus, a small Mexican genus with a large buried caudex and grass-like leaves, is nested within Beaucarnea: keeping it as a separate genus would leave Beaucarnea incomplete. The authors therefore merged it into Beaucarnea, and POWO cites their work in treating Calibanus as a synonym. For the reader, this means two name changes:

  • Calibanus hookeri became Beaucarnea hookeri (Lem.) Baker;
  • Calibanus glassianus became Beaucarnea glassiana (L.Hern. & Zamudio) V.Rojas-Piña.

The name Calibanus remains common among caudiciform enthusiasts, and the site keeps a page under that name: Calibanus.

A genus still being explored

Several species were described only recently, often from very localised populations: Beaucarnea hiriartiae in 1992 (Guerrero), Beaucarnea sanctomariana in 2001 (Isthmus of Tehuantepec, Oaxaca), and Beaucarnea olsonii in 2016 (south-western Puebla), named after the botanist Mark E. Olson. Conversely, the name Beaucarnea inermis, still listed among the species of the 2016 CITES proposal, is now treated as a synonym of Beaucarnea recurvata.

Etymology and history of the genus

The genus is named after Jean-Baptiste Beaucarne, a Belgian notary from Ename, near Oudenaarde, who had grown the Mexican plant in a temperate glasshouse for some fifteen years. According to the Yucatán Scientific Research Centre (CICY), he showed a flowering plant at a horticultural exhibition in Oudenaarde on 1 September 1861. The botanist Charles Lemaire described the genus the same year in L’Illustration horticole (vol. 8: 57–62), under the title “Genre nouveau de la famille des Asparagacées: Beaucarnea”.

The two species longest in cultivation, Beaucarnea recurvata and Beaucarnea stricta, carry the author citation “(K.Koch & Fintelm.) Lem.”: they were first described in another genus by Karl Koch and Fintelmann before being transferred by Lemaire. The protologue could not be consulted to confirm the original genus.

Common names

In English the usual names are “ponytail palm” and “elephant’s foot”, both applied mainly to Beaucarnea recurvata; the description of Beaucarnea olsonii also calls it “a new species of ponytail palm”. “Ponytail palm” is misleading: the plant is not a palm. In Mexico, Beaucarnea species are called “pata de elefante”, “soyate”, “despeinada”, “palma de hoja delgada” or “sotolín”; the last name is ambiguous, as it also refers to Nolina parviflora in the state of Puebla. In French, the common name is “pied d’éléphant”.

Biogeography and ecology

Beaucarnea lives in the dry forests and semi-arid habitats of Mexico and Central America. No species is native to the United States. Most have a small range, sometimes limited to a single Mexican state. According to the POWO profiles, the ranges are as follows:

  • North-eastern and central Mexico: Beaucarnea recurvata (Tamaulipas, San Luis Potosí, Veracruz, Puebla, Oaxaca), Beaucarnea hookeri (San Luis Potosí, Hidalgo), Beaucarnea compacta and Beaucarnea glassiana (Guanajuato);
  • Southern Mexico: Beaucarnea gracilis and Beaucarnea olsonii (Puebla, Oaxaca), Beaucarnea stricta and Beaucarnea sanctomariana (Oaxaca), Beaucarnea hiriartiae (Guerrero);
  • Yucatán Peninsula and Central America: Beaucarnea pliabilis (Campeche, Quintana Roo, Yucatán, Belize, Guatemala), Beaucarnea goldmanii (Chiapas, Guatemala, El Salvador), Beaucarnea guatemalensis (Guatemala, Nicaragua).

Growth is slow, and reproduction depends on male and female plants growing near each other. According to Mexico’s CITES proposal, this is what makes wild populations so vulnerable to the collection of seeds, seedlings and adults: it reduces numbers, unbalances the sex ratio and erodes genetic diversity.

Regulation and conservation

The whole genus is covered by CITES. At its 17th Conference of the Parties (Johannesburg, 24 September–5 October 2016), CITES adopted Mexico’s proposal (CoP17 Prop. 50) to list the genus Beaucarnea in Appendix II: Beaucarnea recurvata under criterion B, ten other species under criterion A. The proposal, supported by Canada, Senegal and the United States, was accepted by 69 votes to 8, with 27 abstentions. Appendix II does not ban international trade but subjects it to export permits.

The two former Calibanus species were not covered by that listing. At its 20th Conference of the Parties (Samarkand, 24 November–5 December 2025), CITES approved Mexico’s proposal (CoP20 Prop. 42) to add Beaucarnea hookeri and Beaucarnea glassiana to Appendix II. According to Species+ (checked on 31 October 2026), this addition has been in force since 5 March 2026, with no specific annotation; in the European Union, both species have been listed in Annex B since 29 June 2026.

On the IUCN Red List, Beaucarnea recurvata is Critically Endangered (CR, criteria A2acd+4ac), according to an assessment by Martínez Salas, Samain and Fuentes published in 2020, which cites illegal collection as the main risk factor. Beaucarnea olsonii is Endangered (EN), threatened by conversion of its habitat to farmland, urbanisation and fires. In Mexico, the standard NOM-059-SEMARNAT-2010 lists Beaucarnea recurvata, Beaucarnea gracilis and Beaucarnea pliabilis, among others, as “threatened” (amenazada).

For buyers, the consequence is simple: plants should come from cultivation. These statuses were consulted in September 2026; regulations change and should be checked on Species+ and with the national CITES authorities before any import or export.

Growing Beaucarnea

Beaucarnea is easy to grow provided it gets plenty of light and the substrate dries out between waterings. The caudex stores water: overwatering, which makes it rot, is far more dangerous than neglect.

Outdoor / in-ground cultivation

Outdoor cultivation is limited to climates with little or no frost. The University of Florida extension service recommends Beaucarnea recurvata for USDA zones 10a to 11b, where average annual minimums stay above about −1 °C. The Royal Horticultural Society rates it H1c, a category of plants grown under glass in the United Kingdom. Horticultural sources report that a mature plant tolerates about −5 °C in well-drained soil, older plants coping somewhat better; these values are not based on published measurements.

  • Exposure: full sun.
  • Soil: stony or raised, very free-draining ground.
  • Watering: generous but spaced out in the warm season, very reduced in winter.

Documented examples by climate are scarce. In the Mediterranean basin, the Val Rahmeh botanical garden in Menton, on the French Riviera, run by the French National Museum of Natural History, includes Beaucarnea recurvata in its collections. No dated result was found for other regions, and no cold spell was found with recorded damage to Beaucarnea. Low-caudex species such as Beaucarnea hookeri are sometimes said to be hardier, but no published measurement confirms this. In the absence of data, valuable plants are best protected from winter rain. Outdoors in warm regions, note also that the site’s article on the agave snout weevil lists Beaucarnea among the documented or suspected hosts of this pest.

Container cultivation

  • Light: the brightest spot available indoors.
  • Substrate: very free-draining, in a pot with a drainage hole.
  • Watering: let the substrate dry between waterings, very little in winter.
  • Propagation: from seed, which requires plants of both sexes; plants in the trade come from seed or laboratory propagation.

Toxicity and precautions

The ponytail palm is not considered toxic. The ASPCA lists Beaucarnea recurvata (“pony tail”) as non-toxic to dogs, cats and horses. No data were found for the other species of the genus: lack of information does not prove they are harmless. As with any plant, eating a large amount may cause digestive upset; if in doubt, contact a veterinarian or a poison control centre.

Species of the genus Beaucarnea

The thirteen species accepted by POWO, in alphabetical order. Ranges are those given by POWO; the WCVP, the Kew checklist behind POWO (consulted on GBIF on 31 October 2026) accepts the same thirteen species.

  • Beaucarnea compacta L.Hern. & Zamudio: Guanajuato; very rare in cultivation.
  • Beaucarnea glassiana (L.Hern. & Zamudio) V.Rojas-Piña: Guanajuato; formerly Calibanus glassianus, added to CITES Appendix II in 2025.
  • Beaucarnea goldmanii Rose: Chiapas, Guatemala, El Salvador.
  • Beaucarnea gracilis Lem.: Puebla, Oaxaca; listed as threatened in Mexico.
  • Beaucarnea guatemalensis Rose: Guatemala, Nicaragua; grown as a houseplant.
  • Beaucarnea hiriartiae L.Hern.: Guerrero; described in 1992.
  • Beaucarnea hookeri (Lem.) Baker: San Luis Potosí, Hidalgo; formerly Calibanus hookeri, low caudex and grass-like leaves; added to CITES Appendix II in 2025.
  • Beaucarnea olsonii V.Rojas-Piña & L.O.Alvarado: Puebla, Oaxaca; described in 2016, Endangered (IUCN).
  • Beaucarnea pliabilis (Baker) Rose: Yucatán Peninsula, Belize, Guatemala; listed as threatened in Mexico.
  • Beaucarnea purpusii Rose: Mexico (central and south-western Mexico according to the WCVP, the checklist behind POWO).
  • Beaucarnea recurvata (K.Koch & Fintelm.) Lem.: the ponytail palm, from eastern Mexico; the most widely grown species, Critically Endangered (IUCN).
  • Beaucarnea sanctomariana L.Hern.: Oaxaca, Isthmus of Tehuantepec; described in 2001.
  • Beaucarnea stricta (K.Koch & Fintelm.) Lem.: Oaxaca; stiffer leaves.

FAQ about Beaucarnea

Is the ponytail palm a palm?

No. Despite its name, Beaucarnea recurvata belongs to the Asparagaceae, the family of agaves and dragon trees, not to the palms. Its silhouette of a trunk topped by narrow leaves explains the confusion.

What is the difference between Beaucarnea and Nolina?

They are two distinct genera. The study by Rojas-Piña and colleagues (2014) confirmed this with DNA; the fruits, dry capsules usually with three wings in Beaucarnea, help to tell them apart. Nolina recurvata and Nolina stricta are old names of ponytail palms.

Are Calibanus hookeri and Beaucarnea hookeri the same plant?

Yes. Since the 2014 study, POWO places Calibanus in Beaucarnea, and Calibanus hookeri is a synonym of Beaucarnea hookeri. The name Calibanus is still widely used by caudiciform collectors.

Can a ponytail palm survive frost?

Very little. The RHS treats it as a plant for growing under glass, the University of Florida recommends it for USDA zones 10a to 11b, and horticultural sources put the first damage at around −5 °C on mature plants in dry soil. Elsewhere it is a houseplant or a summer patio plant.

Is the ponytail palm toxic to cats?

No, according to the ASPCA, which lists it as non-toxic to cats, dogs and horses. Eating a large quantity of leaves can nevertheless upset the stomach, as with any plant.

Can I buy a Beaucarnea freely?

Yes, if it is nursery-grown and legally sold. The genus has been in CITES Appendix II since 2016 (since 2025 for the former Calibanus), which regulates international trade through permits. Wild-collected plants should be avoided: Beaucarnea recurvata is Critically Endangered in the wild.

Why is the base of my ponytail palm soft?

Almost always because of too much water. The caudex already stores a lot of water; a substrate that stays wet, especially in winter, makes it rot. Let the substrate dry between waterings and use a pot with a drainage hole.

Further reading on Succulentes

Reference sites

Bibliography

  • Lemaire, C. (1861). Genre nouveau de la famille des Asparagacées: Beaucarnea. L’Illustration horticole 8: 57–62. [Publication of the genus; reference taken from CICY.]
  • Hernández Sandoval, L. (1992). [Description of Beaucarnea hiriartiae.] Acta Botánica Mexicana 18. [Peer-reviewed journal; exact title and pagination not verified.]
  • Hernández Sandoval, L. (2001). [Description of Beaucarnea sanctomariana.] Novon 11: 50. [Peer-reviewed journal; exact title not verified.]
  • Rojas-Piña, V., Olson, M.E., Alvarado-Cárdenas, L.O. & Eguiarte, L.E. (2014). Molecular phylogenetics and morphology of Beaucarnea (Ruscaceae) as distinct from Nolina, and the submersion of Calibanus into Beaucarnea. Taxon 63(6): 1193–1211. [Peer-reviewed article; separation from Nolina and inclusion of Calibanus.]
  • Rojas-Piña, V. & Alvarado-Cárdenas, L.O. (2016). Beaucarnea olsonii (Ruscaceae), a new species of ponytail palm from southwestern Puebla, Mexico. Phytotaxa 286(1): 13–22. doi:10.11646/phytotaxa.286.1.2 [Peer-reviewed article.]
  • Martínez Salas, E., Samain, M.-S. & Fuentes, A.C.D. (2020). Beaucarnea recurvata. The IUCN Red List of Threatened Species 2020. doi:10.2305/IUCN.UK.2020-1.RLTS.T136808293A137376209.en [Official assessment; category confirmed by GBIF.]
  • CITES (2016). Proposal CoP17 Prop. 50: inclusion of the genus Beaucarnea in Appendix II. Seventeenth meeting of the Conference of the Parties, Johannesburg. [Official document.]
  • CITES (2025). Proposal CoP20 Prop. 42: inclusion of Beaucarnea hookeri and Beaucarnea glassiana in Appendix II. Twentieth meeting of the Conference of the Parties, Samarkand. [Official document; taken from the Earth Negotiations Bulletin.]