''Prenanthes'' is a genus of plant in the family

Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...

, often referred to as rattlesnake root. Molecular analysis in 2009 revealed that the genus as traditionally envisioned was

polyphyletic A polyphyletic group is an assemblage that includes organisms with mixed evolutionary origin but does not include their most recent common ancestor. The term is often applied to groups that share similar features known as Homoplasy, homoplasies ...

, meaning that it is a conglomeration of species not closely related to one another.Posch, M., et al. (2011)
A new trisaccharide derivative from ''Prenanthes purpurea''.
Journal of the Serbian Chemical Society 76(6), 841-45. The genus formerly included species now placed in '' Aetheorhiza'', '' Askellia'', ''

Brickellia ''Brickellia'' is a North American genus of about 100 to 110 species of plants in the family Asteraceae, known commonly as brickellbushes. They are found in Canada, the United States, Mexico, and Central America. Many species are native to the A ...

'', '' Chondrilla'', '' Crepidiastrum'', ''

Crepis ''Crepis'', commonly known in some parts of the world as hawksbeard or hawk's-beard (but not to be confused with the related genus ''Hieracium'' with a similar common name), is a genus of annual and perennial flowering plants of the family Aster ...

'', '' Emilia'', '' Erythroseris'', '' Faberia'', '' Hololeion'', ''

Hypochaeris ''Hypochaeris'' is a genus of plants in the family Asteraceae. Many species are known as cat's ear. These are annual and perennial herbs generally bearing Head (botany), flower heads with yellow ray florets. These plants may resemble or be confu ...

'', '' Ixeris'', ''

Lactuca ''Lactuca'', commonly known as lettuce, is a genus of flowering plants in the family Asteraceae. The genus includes at least 50 species, distributed worldwide, but mainly in temperate Eurasia. Its best-known representative is the garden lettuce ...

'', '' Lapsanastrum'', ''

Launaea ''Launaea'' is a genus of flowering plants in the family Asteraceae. ; Species References External links * Cichorieae Porta
* Launaea, Asteraceae genera Taxonomy articles created by Polbot {{Cichorieae-stub ...

'', ''

Lygodesmia ''Lygodesmia'', called skeletonplant, is a genus of North American flowering plants in the tribe Cichorieae within the family Asteraceae.

'', ''

Nabalus ''Nabalus'' is a genus of Asian and North American flowering plants in the tribe Cichorieae within the family Asteraceae. ''Nabalus'' is now considered the correct name for a group of plants in North America that were formerly considered to be m ...

'', '' Notoseris'', '' Paraprenanthes'', '' Parasenecio'', '' Picrosia'', '' Sonchella'', '' Sonchus'', '' Soroseris'', ''

Stephanomeria ''Stephanomeria'' is a genus of North American plants also known as wirelettuce, belonging to the tribe Cichorieae within the family Asteraceae.Lee, J., Baldwin, B., and Gottlieb, L.D.; ''Phylogeny of ''Stephanomeria'' and related genera (composi ...

'', ''

Trixis ''Trixis'' is a genus of shrubs in the family Asteraceae, native to North and South America including the West Indies. Members of the genus are commonly known as threefolds due to the outer lip of the corolla. The generic name is derived from ...

'', and ''

Youngia ''Youngia'' is a genus of Asian plants in the tribe Cichorieae within the family Asteraceae. There are several weedy species in the genus as well as the endangered ''Youngia nilgiriensis'' from Sispara in southern India, and ''Youngia japonica'', ...

''.Flann, C (ed) 2009+ Global Compositae Checklist

Species

Plants of the World Online Plants of the World Online (POWO) is an online taxonomic database published by the Royal Botanic Gardens, Kew. History Following the Convention on Biological Diversity, the Royal Botanic Gardens in Kew launched Plants of the World Online i ...

accepted nine species: *'' Prenanthes hookeri'' C.B.Clarke ex Hook.f. *'' Prenanthes mira'' (Pavlov) Kamelin *'' Prenanthes nothae'' Kurz *'' Prenanthes petiolata'' (K.Koch) Sennikov *'' Prenanthes purpurea'' L. *'' Prenanthes steenisii'' Tjitr. *'' Prenanthes stenolimba'' Steenis *'' Prenanthes subpeltata'' Stebbins *'' Prenanthes sumatrana'' Tjitr.

References

Cichorieae Monotypic Asteraceae genera {{Cichorieae-stub