Classification System: APG IV
Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Ordo: Caryophyllales
Familia: Cactaceae
Subfamilia: Pereskioideae
Genus: Pereskia
Subgenera: P. subg. Pereskia – P. subg. Rhodocactus
Genera: P. aculeata – P. bahiensis – P. diaz-romeroana – P. grandifolia – P. horrida – P. nemerosa –P. sacharosa – P. stenantha – P. weberiana
Name
Pereskia Mill., Gard. Dict. Abr., ed. 4. 1026. (1754)
Type species: Pereskia aculeata Mill. (1754)
Synonyms
Homotypic
Peirescia Zucc., Abh. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss. 2: 695. (1837) orth. var.
Peireskia K.Schum., Fl. Bras. 4(2): 308. (1890) orth. var.
Perescia Lem., orth. var.
Heterotypic
Pereskia sect. Rhodocactus A.Berger, Kakteen: 43. (1929)
Rhodocactus (A.Berger) F.M.Knuth, Nye Kaktusbog: 102. (1930)
Type: Rhodocactus grandifolius (Haw.) F.M.Knuth
Carpophillus Neck., Elem. Bot. 2: 84. (1790) nom. inval.
References
Miller, P. 1754. The Gardeners Dictionary, ed. 4. 1026.
Doweld, A.B. 2004. Система рода Pereskia Mill. (Pereskioideae-Cactaceae). Byulleten’ Moskovskogo Obshchestva Ispytatelei Prirody, Otdel Biologicheskii 109(4): 44–49. DJVU Reference page.
International Plant Names Index. 2021. Pereskia. Published online. Accessed: Nov. 4 2021.
Korotkova, N. et al. 2021. Pereskia in Cactaceae at Caryophyllales.org. A global synthesis of species diversity in the angiosperm order Caryophyllales. Published on the internet. Accessed: 2021 Nov. 4. Reference page.
USDA, ARS, Germplasm Resources Information Network. Pereskia in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 04 February 2009.
Vernacular names
Deutsch: Laubkakteen
English: Lemon Vines, Rose Cacti, Leaf Cacti
español: Enredadera Limón, Cacto Rosa, Cacto de Hojas, Bleo, Guamacho, Palo de Puerco Espín, Supire
suomi: Puukaktukset
latviešu: Pereskijas (Lapu kaktusi)
polski: Drzewidło
svenska: Trädkaktussläktet
Pereskia is a small genus of about four species of cacti that do not look much like other types of cacti, having substantial leaves and non-succulent stems. The genus is named after Nicolas-Claude Fabri de Peiresc, a 16th-century French botanist. The genus was more widely circumscribed until molecular phylogenetic studies showed that it was paraphyletic. The majority of species have since been transferred to Leuenbergeria and Rhodocactus. Although Pereskia does not resemble other cacti in its overall morphology, close examination shows spines developing from areoles, and the distinctive floral cup of the cactus family. Pereskia is believed to resemble the ancestor of all cacti.
Description
The four species of Pereskia as the genus is now circumscribed share many features in common with Leuenbergeria and Rhodocactus, which were formerly included in a broadly defined Pereskia. They are shrubs, trees or climbing vines, with maximum heights varying between 3 and 10 m. Unlike the great majority of species of cacti, they have persistent leaves. Like all cacti, they have spines borne on areoles. Their succulent leaves are longer than wide, reaching 11 cm by 5 cm in the case of P. aculeata. Their flowers are borne in small clusters or are solitary, except for P. aculeata which can have inflorescences of 70 or more individual flowers. P. aculeata has edible fruits, 1.5–2.5 cm in diameter; the other species have smaller fruits, only up to 6 mm in diameter in the case of P. horrida. Unlike Leuenbergeria, the stems of Pereskia delay forming bark and have stomata. Unlike Rhodocactus, there are no leaves on the areoles.[1][2][3]
Habit of Pereskia aculeata
Areoles and spines of Pereskia aculeata
Taxonomy
It is likely that Charles Plumier collected the first Pereskia specimens from the West Indies in the late 17th century. Plumier described two species of Pereskia in 1703. Linnaeus did not accept Plumier's genus, placing the two species in Cactus, as C. pereskia and C. portacifolius.[1] Philip Miller published Pereskia in 1754, and as pre-Linnaean names are not accepted under the International Code of Nomenclature for algae, fungi, and plants, Miller rather than Plumier is credited as the author.[4]
Phylogeny and evolution
A 2005 study suggested that the genus Pereskia as then circumscribed (Pereskia sensu lato) was basal within the Cactaceae, and confirmed earlier suggestions that it was paraphyletic, i.e. did not include all the descendants of a common ancestor. The Bayesian consensus cladogram from this study is shown below with more recent generic assignments added.[5]
|
Pereskia s.l.
|
Pereskia s.l. divided into two main clades which differed in their geographical distribution. Clade A, the Northern clade, comprised species mainly found around the Gulf of Mexico and the Caribbean Sea. Clade B comprised species found mainly in South America south of the Amazon basin, either in the Andes (the Andean clade) or further south (the southern South American or SSA clade). Subsequent studies confirmed the division of Pereskia s.l. into these three clades.[6][3]
Species of Clade A always lack two key features of the stem present in most of the remaining "caulocacti": like most non-cacti, their stems begin to form bark early in the plant's life, and they also lack stomata – structures which control the admission of air into a plant and hence control photosynthesis. By contrast, species of Clade B typically delay forming bark and have stomata on their stems, thus giving the stem the potential to become a major organ for photosynthesis.[5][3] The subclades of Clade B, the Andean and SSA clades, also show consistent differences. The SSA clade is distinctly tree-like with pink flowers and leaves as well as spines on its areoles, which can grow out to form short, densely crowded branchlets or brachyblasts, which produce leaves. The Andean clade consists of climbers or undershrubs with smaller flowers and does not form brachyblasts.[3]
In 2013, it was suggested that two distinct genera should be recognized, Clade A becoming Leuenbergeria and Clade B becoming a more tightly circumscribed Pereskia sensu stricto.[2][7] In 2016, a further division of Clade B into two genera was proposed, with the Andean clade becoming a reduced Pereskia s.s. and the southern South American clade becoming the restored genus Rhodocactus.[3] As of April 2021, Plants of the World Online accepts all three genera.[8][9][10]
Species
As of April 2021, Plants of the World Online places four species in Pereskia s.s.:[9]
Pereskia aculeata Mill.
Pereskia diaz-romeroana Cárdenas
Pereskia horrida DC
Pereskia weberiana K.Schum.
Former species placed in Leuenbergeria are:[8]
Pereskia aureiflora F.Ritter = Leuenbergeria aureiflora (F. Ritter) Lodé
Pereskia bleo (Kunth) DC = Leuenbergeria bleo (Kunth) Lodé
Pereskia guamacho F.A.C.Weber = Leuenbergeria guamacho (F.A.C. Weber) Lodé
Pereskia lychnidiflora DC = Leuenbergeria lychnidiflora (DC.) Lodé
Pereskia marcanoi Areces = Leuenbergeria marcanoi (Areces) Lodé
Pereskia portulacifolia (L.) DC = Leuenbergeria portulacifolia (L.) Lodé
Pereskia quisqueyana Alain = Leuenbergeria quisqueyana (Alain) Lodé
Pereskia zinniiflora DC = Leuenbergeria zinniiflora (DC.) Lodé
Former species placed in Rhodocactus are:[10]
Pereskia bahiensis Gürke = Rhodocactus bahiensis (Gürke) I.Asai & K.Miyata
Pereskia grandifolia Haw. = Rhodocactus grandifolius (Haw.) F.M.Knuth
Pereskia nemorosa Rojas Acosta = Rhodocactus nemorosus ((Rojas Acosta) I.Asai & K.Miyata
Pereskia sacharosa Griseb. = Rhodocactus sacharosa (Griseb.) Backeb.
Pereskia stenantha F.Ritter = Rhodocactus stenanthus (F.Ritter) I.Asai & K.Miyata
Synonyms
Pereskia colombiana = Leuenbergeria guamacho
Pereskia corrugata = Leuenbergeria bleo
Pereskia cubensis = Leuenbergeria zinniiflora
Pereskia godseffiana = Pereskia aculeata
Pereskia humboldtii = Pereskia horrida
Pereskia philippi = Maihuenia poeppigii
Pereskia subulata = Austrocylindropuntia subulata
Pereskia vargasii = Pereskia horrida
Pereskia zehntneri = Quiabentia zehntneri
Pereskia zinniaefolia = Leuenbergeria ziniiflora
Distribution
The four species of Pereskia s.s. are almost entirely native to northern and eastern South America, excluding the Amazon basin.[9] Pereskia aculeata has the widest distribution, and is also found in Panama. It has been introduced into several other parts of the world, including Mexico and the United States, South Africa, China and Australia.[11]
Uses
The genus is not of great economic importance. Pereskia aculeata has edible fruit and is widely cultivated. The fruit contains numerous small seeds. It somewhat resembles a gooseberry in appearance and is of excellent flavor. This plant is a declared weed in South Africa. It can also be used as a rootstock for grafting of Schlumbergera to create miniature trees.
References
Anderson, Edward F. (2001), "Pereskia", The Cactus Family, Pentland, Oregon: Timber Press, pp. 566–572, ISBN 978-0-88192-498-5; Anderson's Pereskia includes Leuenbergeria and Rhodocactus.
Lodé, J. (2013), "Leuenbergeria, un nouveau genre de cactées", Cactus-Aventures International (in French), 97: 26–27, cited in Mayta & Molinari-Novoa (2015); English translation: Lodé, J. (2013), "Leuenbergeria, a new genus in Cactaceae" (PDF), International Cactus-Adventures, 97: 25–27, retrieved 2021-04-28
Asai, Issaku & Miyata, Kazunori (2016), "An Emendation of Rhodocactus, a Genus Segregated from Pereskia (Cactaceae)" (PDF), Journal of Japanese Botany, 91: 7–12, retrieved 2021-04-25
"Pereskia Mill.", The International Plant Names Index, retrieved 2021-04-30
Edwards, Erika J.; Nyffeler, Reto & Donoghue, Michael J. (2005), "Basal cactus phylogeny: implications of Pereskia (Cactaceae) paraphyly for the transition to the cactus life form", American Journal of Botany, 92 (7): 1177–1188, doi:10.3732/ajb.92.7.1177, PMID 21646140
Bárcenas, Rolando T.; Yesson, Chris & Hawkins, Julie A. (2011), "Molecular systematics of the Cactaceae", Cladistics, 27 (5): 470–489, doi:10.1111/j.1096-0031.2011.00350.x, S2CID 83525136
Mayta, Luis & Molinari-Novoa, E.A. (2015), "L'intégration du genre Leuenbergeria Lodé dans sa propre sous-famille, Leuenbergerioideae Mayta & Mol. Nov., subfam. nov.", Succulentopi@ (in French), 15: 6–7, retrieved 2015-01-20
"Leuenbergeria Lodé", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2019-05-27
"Pereskia Mill.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2021-04-25
"Rhodocactus (A.Berger) F.M.Knuth", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2021-04-25
"Pereskia aculeata Mill.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2021-04-25
Bibliography
Butterworth, Charles A. & Wallace, Robert S. (2005), "Molecular Phylogenetics of the Leafy Cactus Genus Pereskia (Cactaceae)", Systematic Botany, 30 (4): 800–808, doi:10.1600/036364405775097806, S2CID 55345496
Leuenberger, Beat Ernst (1986), "Pereskia (Cactaceae)", Memoirs of the New York Botanical Garden, 14
Leuenberger, Beat Ernst (2008), "Pereskia, Maihuenia, and Blossfeldia — Taxonomic History, Updates, and Notes", Haseltonia, 14: 54–93, doi:10.2985/1070-0048-14.1.54, S2CID 86232406
Retrieved from "http://en.wikipedia.org/"
All text is available under the terms of the GNU Free Documentation License
