Leptochiton is a genus of South American plants in the Amaryllis family.[4][5]
| Leptochiton | |
|---|---|
| |
| Leptochiton quitoensis[2] | |
Scientific 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[3] | |
There are 2 known species, native to Ecuador and Peru:[6]
- Leptochiton helianthus (Ravenna) Gereau & Meerow - Peru (Cajamarca)
- Leptochiton quitoensis (Herb.) Sealy - Ecuador (Guayas, Loja), Peru
Description edit
_Sealy.jpg)
Generative characteristics edit
Leptochiton has phytomelanous seeds, which is unique among the tribe Hymenocallideae.[7]
Cytology edit
The diploid chromosome count is 2n = 24 or 2n = 34.[7]
Phylogeny edit
It is closely related to Ismene, to which it shared a common ancestor 26.14 million years ago. It is the sister group to Hymenocallis, from which it separated 24.46 million years ago.[1]
| Hymenocallideae |
| ||||||||||||
.jpg)
References edit
- ^ a b Meerow, 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.
- ^ illustration from Baker, John Gilbert. 1878. Curtis's Botanical Magazine 104: plate 6397, as Ismene tenuifolia
- ^ "Leptochiton Sealy". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 30 July 2023.
- ^ Sealy, Joseph Robert. 1937. Botanical Magazine 160: plate 9491
- ^ 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.
- ^ Kew World Checklist of Selected Plant Families
- ^ a b Meerow, 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.