Lymanbensonia

Primary tabs

Lymanbensonia

Lymanbensonia Kimnach in Cact. Succ. J. (Los Angeles) 56: 101. 1984 sec. Korotkova & al. 2010
  • =Acanthorhipsalis Kimnach in Cact. Succ. J. (Los Angeles) 55: 177. 1983, nom. illeg., syn. sec. Korotkova & al. 2010

Acknowledgments

Compiled by Nadja Korotkova

Distribution (Area)

Bolivia nativeA,B
Ecuador nativeB
Peru nativeB

Taxon standing

Category A: The genus is monophyletic based on a complete or very comprehensive phylogenetic study, and a phylogeny-based taxonomic synopsis was published.C

Notes

Phylogenetics: Segregated from Acanthorhipsalis (Kimnach 1984), but otherwise either assigned to Lepismium (Barthlott 1987; Barthlott & Taylor 1995; Anderson 2001, 2005) or to Pfeiffera (Hunt 2006). The molecular phylogenetic study of Korotkova & al. (2010) unexpectedly found the three species now assigned to Lymanbensonia to represent a highly supported isolated clade distant from either Lepismium or Pfeiffera. As this new clade contained the nomenclatural type of Lymanbensonia, this generic name was reinstated.D
Accepted species: 5
Nomenclature: In his revision of Acanthorhipsalis (K. Schum.) Britton & Rose, Kimnach (1983) excluded all species from the genus but A. micrantha. Noticing that by excluding the type species A. monacantha he had created an illegitimate homonym, he afterwards proposed a new genus Lymanbensonia for A. micrantha (Kimnach 1984).B

Description

Life form predominantly terrestrial or obligatorily or facultatively epiphytic; plants usually erect at first, then spreading, pendent. Adventitious roots lacking. Branching mesotonic. Stems flattened, angled at first in L. micrantha, of indeterminate growth, old stem segments not deciduous. Branch segments narrowly oblong (broadly oblong in L. incachacana); cladode margins crenate or crenulate. Areoles superficial (sunken in L. incachacana), composite terminal areoles absent, bristles and trichomes often present. Spines usually well developed, yellowish-whitish or grey, 1 – 10 per areole. Pericarpel ± sharply differentiated from perianth, not tuberculate (= smooth); terete or cup-shaped, not conspicuously angled, not spiny. Flowers usually solitary, rarely 2 per areole, lateral, actinomorphic, 1.2 – 3 cm long, narrowly tubular bell-shaped; tepals not fully expanding, spreading at apices, intensely coloured (red, pink, orange, magenta) or white in L. brevispina. Hypanthium (receptacle tube) not conspicuously developed, except in L. micrantha. Stamens c. 20 – 50, filaments and anthers white or whitish/cream. Fruits globose or subglobose, red-brown, white to pinkish, greenish, opaque, naked. Funiculi simple, with short stalk (examined so far only in L. micrantha).B

Distribution (General)

Ranges from southern Ecuador (Loja) to central and southern Peru (Amazonas, Junín, Puno, Cusco) and the eastern Andes of Bolivia (La Paz; Cochabamba, Santa Cruz).E

Bibliography

A. Kiesling, R., Oakley, L., Metzing, D., Muruaga, N., Albesiano, A.S., Korotkova, N., Huaylla Limachi, L. & Quispe, N. 2014: Cactaceae, pp. 443-471. – In: Jørgensen, P.M., Nee, M.H. & Beck, S.G., Catálogo de las plantas vasculares de Bolivia
B. Korotkova, N., Zabel, L., Quandt, D. & Barthlott, W. 2010: A phylogenetic analysis of Pfeiffera and the reinstatement of Lymanbensonia as an independently evolved lineage of epiphytic Cactaceae within a new tribe Lymanbensonieae. – Willdenowia 40: 151-172
C. Korotkova, N. 2021: Revisions of Deamia, Disocactus, Epiphyllum, Hatiora, Kimnachia, Lepismium, Leuenbergeria, Lymanbensonia, Pereskia, Pfeiffera, Pseudorhipsalis, Rhipsalidopsis, Rhipsalis, Schlumbergera, Selenicereus, Strophocactus, Weberocereus, and various other names. In: Korotkova N. & al., Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family. – Willdenowia 51: 250-270
D. Hernández-Ledesma, P., Berendsohn, W. G., Borsch, T., von Mering, S., Akhani, H., Arias, S., Castañeda-Noa, I., Eggli, U., Eriksson, R., Flores-Olvera, H., Fuentes-Bazán, S., Kadereit, G., Klak, C., Korotkova, N., Nyffeler, R., Ocampo, G. & Ochoterena, H. 2015: A taxonomic backbone for the global synthesis of species diversity in the angiosperm order Caryophyllales. – Willdenowia 45(3): 281-383
E. Korotkova, N. 2021: Revisions of Deamia, Disocactus, Epiphyllum, Hatiora, Kimnachia, Lepismium, Leuenbergeria, Lymanbensonia, Pereskia, Pfeiffera, Pseudorhipsalis, Rhipsalidopsis, Rhipsalis, Schlumbergera, Selenicereus, Strophocactus, Weberocereus, and various other names. In: Korotkova N. & al., Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family. – Willdenowia 51: 250-270