Classification System: APG IV
Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Ordo: Caryophyllales
Familia: Cactaceae
Subfamilia: Cactoideae
Tribus: Rhipsalideae
Genera: Hatiora - Lepismium - Rhipsalis - Schlumbergera
Nothogenera: × Hatbergera
Name
Rhipsalideae DC. (1828)
Type genus: Rhipsalis Gaertn. nom. cons.
Synonyms
Homotypic
Rhipsalidinae Britton & Rose, Cact. 4: 208. 1923.
Rhipsalidoideae Burnett, Outlines Bot. 742, 1130. 1835.
Heterotypic
Hylorhipsalidinae Doweld in Sukkulenty 4(1-2): 37. 2001.
Type genus: Hylorhipsalis Doweld
Rhipsalidopsidinae Doweld, Sukkulenty 4(1-2): 31. 2001.
Type genus: Rhipsalidopsis Britton & Rose
Schlumbergerinae S.A.Volgin, Feddes Repert. 97: 563. 1986.
Type genus: Schlumbergera Lem.
References
De Candolle, A.P. 1828. Prodromus systematis naturalis regni vegetabilis, sive enumeratio contracta ordinum, generum, specierumque plantarum huc usque cognitarum, juxta methodi naturalis normas digesta. Pars 3: Sistens Calyciflorarum ordines XXVI. 494 pp. Treuttel et Würtz, Parisiis [Paris]. BHL Reference page. : 3: 475.
Nyffeler, R. & Eggli, U. (2010), A farewell to dated ideas and concepts: molecular phylogenetics and a revised suprageneric classification of the family Cactaceae. Schumannia 6: 109–149 [1].
The Rhipsalideae are a small tribe of cacti, comprising four genera (and around 60 species). They grow on trees (epiphytes) or on rocks (lithophytes), where they either hang down or form creeping or upright shrubs. Their flowers open in the day and remain open at night; they may be either radially symmetrical (regular) or bilaterally symmetrical (zygomorphic). The fruits are berry-like, fleshy with smallish seeds.[1]
They are found mainly in the east of South America, with a centre of diversity in Bolivia,[2] but some species occur in Central America and North America; one species, Rhipsalis baccifera, also occurs in the Old World.[1]
Taxonomy
Cacti belonging to the Rhipsalidae are quite distinct in appearance and habit from other cacti, growing on trees or rocks as epiphytes or lithophytes, and are thus easily distinguished. However, for many years there has been confusion as to how to divide the tribe into genera.[3] For example, in 1858 Charles Lemaire recognized the distinctiveness of the species then called Epiphyllum russellianum by creating the genus Schlumbergera. However he kept the only other species of Schlumbergera known at the time in a different genus.[4] As another example, in 1923, Nathaniel Britton and Joseph Rose created the genus Hatiora. Of the species known at the time, they placed two in Hatiora (H. salicornioides and H. cylindrica); they left H. gaertneri in Schlumbergera where they had placed it in 1913, and they placed H. rosea in a new genus, Rhipsalidopsis.[5] According to Anderson,[3] the confusion among the Rhipsalideae was not clarified until work by Wilhelm Barthlott and Nigel Taylor in 1995.[6]
Recent molecular phylogenetic studies have led to a slight modification of the approach taken by Barthlott and Taylor, since with their circumscriptions, Hatiora and Schlumbergera were not monophyletic. One hypothesis for the relationships between the genera is shown below. The yellow shading shows species formerly placed in Hatiora, but which were moved by Calvente et al. to a more broadly defined Schlumbergera.[7]
| Rhipsalideae |
|
An alternative approach uses the genus Rhipsalidopsis for the two species Schlumbergera rosea and Schlumbergera gaertneri, which are treated as Rhipsalidopsis gaertneri and Rhipsalidopsis rosea.[8][9]
Genera
The genera included in the tribe as of June 2019 are as follows,[7] with species counts based on Plants of the World Online:
Hatiora Britton & Rose – 3 species;[10] synonyms include Epiphyllopsis, Hariota DC non Andan., Rhipsalidopsis and Pseudozygocactus; it has been included in Rhipsalis[5]
Lepismium Pfeiff. – 6 species;[11] synonyms include Acanthorhipsalis, Lymanbensonia, Pfeiffera; it has been included in Rhipsalis[12]
Rhipsalis Gaertn. – 43 species;[13] synonyms include Erythrorhipsalis;[14] most species in the tribe have been placed here at one time or another
Schlumbergera Lem. – 9 species;[15] synonyms include Epiphyllanthus, Epiphyllum Pfeiffer non. Haworth and Zygocactus[16]
Illustration of Hatiora salicornioides
Lepismium cruciforme
Rhipsalis pilocarpa fruit
Illustration of Schlumbergera truncata
References
Anderson 2001, p. 102
Hogan, C. Michael & Dawson, Arthur (2012), "Cactus", in Cleveland, Cutler J. (ed.), Encyclopedia of Earth, Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment, retrieved 2012-01-29
Anderson 2001, p. 375
McMillan, A.J.S.; Horobin, J.F. (1995), Christmas Cacti : The genus Schlumbergera and its hybrids (p/b ed.), Sherbourne, Dorset: David Hunt, ISBN 978-0-9517234-6-3, pp. 12–13
Anderson 2001, pp. 375–377
Barthlott, W. & Taylor, N.P. (1995), "Notes towards a monograph of Rhipsalidaeae (Cactaceae)", Bradleya, 13 (13): 43–79, doi:10.25223/brad.n13.1995.a7, S2CID 89883634
Calvente, Alice; Zappi, Daniela C.; Forest, Félix & Lohmann, Lúcia G. (2011), "Molecular phylogeny of tribe Rhipsalideae (Cactaceae) and taxonomic implications for Schlumbergera and Hatiora", Molecular Phylogenetics and Evolution, 58 (3): 456–468, doi:10.1016/j.ympev.2011.01.001, PMID 21236350
Korotkova, Nadja; Borsch, Thomas; Quandt, Dietmar; Taylor, Nigel P.; Müller, Kai F. & Barthlott, Wilhelm (2011), "What does it take to resolve relationships and to identify species with molecular markers? An example from the epiphytic Rhipsalideae (Cactaceae)", American Journal of Botany, 98 (9): 1549–1572, doi:10.3732/ajb.1000502, PMID 21900612
Lodé, Joël (2015), "Rhipsalidopsis", Taxonomy of the Cactaceae : a new classification of cacti based on molecular research and fully explained (vols. 1 and 2), Cuevas del Almanzora, ISBN 978-84-617-2974-6, accessed 2019-06-19 via Rhipsalidopsis
"Hatiora Britton & Rose", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2019-06-19
"Lepismium Pfeiff.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2019-06-19
Anderson 2001, pp. 386–391
"Rhipsalis Gaertn.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2019-06-19
Anderson 2001, p. 612
"Schlumbergera Lem.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2019-06-19
Anderson 2001, p. 623
Bibliography
Anderson, Edward F. (2001), The Cactus Family, Pentland, Oregon: Timber Press, ISBN 978-0-88192-498-5
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