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Leptochiton (plant)

From Wikipedia, the free encyclopedia
Genus of plant
This article is about the genus of plants LeptochitonSealy. For the genus of polyplacophoran molluscs, seeLeptochiton (chiton).

Leptochiton
Temporal range:24.46 –0 MaLateOligocene – Recent[1]
Leptochiton quitoensis[3]
Scientific classificationEdit this classification
Kingdom:Plantae
Clade:Tracheophytes
Clade:Angiosperms
Clade:Monocots
Order:Asparagales
Family:Amaryllidaceae
Subfamily:Amaryllidoideae
Tribe:Hymenocallideae
Genus:Leptochiton
Sealy
Type species
Leptochiton quitoensis
Leptochiton is native to Ecuador and Peru[4]
Synonyms[5]
  • Lepidochiton Meerow, orth. var.

Leptochiton is a genus ofSouth American plants in the familyAmaryllidaceae[6][7] native to Ecuador and Peru.[4]

Description

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Leptochiton quitoensis (Herb.) Sealy bulb with scale bar (3 cm)

Generative characteristics

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Leptochiton has phytomelanous seeds, which is unique among the tribe Hymenocallideae.[8]

Cytology

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The diploid chromosome count is 2n = 24 or 2n = 34.[8]

Taxonomy

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It was published byJoseph Robert Sealy in 1937 withLeptochiton quitoensis(Herb.) Sealy as the type species.[2] It is placed in the tribeHymenocallideae.[5]

Species

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There are 2 known species, native toEcuador andPeru:[9]

Etymology

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The generic nameLeptochiton is derived from the Greekleptos meaning thin, delicate, small, or slender, andchiton meaning covering or tunic. It refers to the thin testa.[10]

Phylogeny

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It is closely related toIsmene, to which it shared a common ancestor 26.14 million years ago. It is the sister group toHymenocallis, from which it separated 24.46 million years ago.[1]

Hymenocallideae

Hymenocallis

Leptochiton

Ismene

References

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  1. ^abMeerow, A. W., Gardner, E. M., & Nakamura, K. (2020)."Phylogenomics of the Andean tetraploid clade of the American Amaryllidaceae (subfamily Amaryllidoideae): unlocking a polyploid generic radiation abetted by continental geodynamics." Frontiers in Plant Science, 11, 582422.
  2. ^abMissouri Botanical Garden. (n.d.-y).Leptochiton Sealy. Tropicos. Retrieved March 2, 2025, fromhttps://www.tropicos.org/name/40004857
  3. ^illustration from Baker, John Gilbert. 1878. Curtis's Botanical Magazine 104: plate 6397, asIsmene tenuifolia
  4. ^ab"Leptochiton Sealy".Plants of the World Online.Royal Botanic Gardens, Kew. Retrieved30 July 2023.
  5. ^abUSDA, Agricultural Research Service, National Plant Germplasm System. 2025. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland. URL:https://npgsweb.ars-grin.gov/gringlobal/taxon/taxonomygenus?id=6708. Accessed 2 March 2025.
  6. ^Sealy, Joseph Robert. 1937. Botanical Magazine 160: plate 9491
  7. ^Jørgensen, P. M., M. H. Nee & S. G. Beck. (eds.) 2014. Catálogo de las plantas vasculares de Bolivia, Monographs in systematic botany from the Missouri Botanical Garden 127(1–2): i–viii, 1–1744.
  8. ^abMeerow, A. W., Guy, C. L., Li, Q. B., & Yang, S. L. (2000)."Phylogeny of the American Amaryllidaceae based on nrDNA ITS sequences." Systematic Botany, 708-726.
  9. ^Kew World Checklist of Selected Plant Families
  10. ^Quattrocchi, U. (2023). CRC World Dictionary of Plant Names: Common Names, Scientific Names, Eponyms, Synonyms, and Etymology. p. 1467. USA: CRC Press.
Leptochiton
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