Lymanbensonia

Primary tabs

Lymanbensonia

Lymanbensonia Kimnach in Cact. Succ. J. (Los Angeles) 56: 101. 1984 sec. Korotkova & al. 20101 wfo-4000022535
      Type: Lymanbensonia micrantha (Vaupel) Kimnach
  • 1. 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. https://doi.org/10.3372/wi.40.40201
  • =Acanthorhipsalis Kimnach in Cact. Succ. J. (Los Angeles) 55: 177. 1983, nom. illeg. syn. sec. Korotkova & al. 20102 wfo-4000042580
  • 2. 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. https://doi.org/10.3372/wi.40.40201

Content

Notes

Segregated from Acanthorhipsalis (Kimnach 1984), but otherwise either assigned to Lepismium (Barthlott 1987; Barthlott & Taylor 1995; Anderson 2001) or to Pfeiffera (Hunt 2006). The molecular phylogenetic study of Korotkova & al. (2010) 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.A,B,C,D,E,F,G Accepted species: 5

Distribution (Area)

Bolivia nativeG,H Ecuador nativeG Peru nativeG

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).I

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.G

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).G

Etymology

Named after Lyman Benson (1903 – 1993), American botanist.

Acknowledgments

Compiled by Nadja Korotkova

Bibliography

A. Anderson, E. F. 2001: The Cactus Family. – Portland, Oregon: Timber Press
B. Barthlott, W. & Taylor, N. P. 1995: Notes towards a monograph of Rhipsalideae (Cactaceae). – Bradleya 13: 43-79. https://doi.org/10.25223/brad.n13.1995.a7
C. Barthlott, W. 1987: New names in Rhipsalidinae (Cactaceae). – Bradleya 5: 97-100. https://doi.org/10.25223/brad.n5.1987.a7
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. https://doi.org/10.3372/wi.45.45301
E. Hunt, D.R. 2006: The New Cactus Lexicon. – Milborne Port: dh books
F. Kimnach, M. 1984: Lymanbensonia (Cactaceae), a new genus for Acanthorhipsalis micrantha. – Cactus and Succulent Journal 56: 100 - 101
G. 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. https://doi.org/10.3372/wi.40.40201
H. 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. – St. Louis: Missouri Botanical Garden Press
I. 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. https://doi.org/10.3372/wi.51.51208