Prochnyanthes
| Prochnyanthes | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Embryophytes |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Asparagaceae |
| Subfamily: | Agavoideae |
| Genus: | Prochnyanthes S.Watson |
| Species: | P. mexicana
|
| Binomial name | |
| Prochnyanthes mexicana | |
| Synonyms[1] | |
| |
Prochnyanthes is a genus of flowering plants in the family Asparagaceae. It includes a single species, Prochnyanthes mexicana, a tuberous geophyte native to northeastern and southwestern Mexico.[1]
Taxonomy
Prochnyanthes and close relatives have long presented significant taxonomic difficulty. With the advent of DNA sequencing, new karyologic and evolutionary phylogenetic studies showed that Prochnyanthes, along with Manfreda and Polianthes, were genetically nested within the traditional circumscription of Agave, rendering that genus paraphyletic.[2] Early in the 21st century, these new phylogenetic results led to a reclassification of to include Prochnyanthes, Manfreda and Polianthes together as Agave subgenus Manfreda.[2]
There was reaction against the changes from those who noted that the large morphological differences between the genera in this new Agave s.l. making them "counter-intuitive from a horticultural point of view".[3] Thus, based on a wider consideration of previously established genetic, morphological, and estimated genetic divergence times, Vázquez-García et al. proposed a narrower circumscription of Agave,[4][5] paving the way for a reconsideration of Prochnyanthes as a genus.[4][5]
References
- ^ a b "Prochnyanthes mexicana (Zucc.) Rose". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 9 July 2025.
- ^ a b Thiede, Joachim (2001). "Agavaceae". In Eggli, Urs (ed.). Illustrated Handbook of Succulent Plants: Monocotyledons. Springer. p. 8. ISBN 9783642625855.
- ^ "Polianthes". Pacific Bulb Society. 7 July 2025. Retrieved 10 October 2025.
- ^ a b Vázquez-García, J. Antonio; et al. (15 January 2024). "New genera and new combinations in Agavaceae (Asparagales)" (PDF). Phytoneuron. 2024 (2): 3–4. ISSN 2153-733X.
- ^ a b Avent, Tony. "Re-arranging Limbs on the Family Tree – When is an Agave not an Agave?". Juniper Level Botanic Garden website. Retrieved 10 October 2025.
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