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iNat·62252GenusPlantae7,501 field observations
  1. Plants
  2. ›Vascular Plants
  3. ›flowering plants
  4. ›Dicots
  5. ›Sunflowers, Bellflowers, Fanflowers, and Allies
  6. ›Sunflowers, Daisies, Asters, and Allies
  7. ›chicories, dandelions, and allies
  8. ›Lettuce, Chicory, Dandelion and Salsify Tribe
  9. ›Lettuce subtribe
purple lettuces
Plate 1 of 9. (c) Drepanostoma, some rights reserved (CC BY), uploaded by Drepanostoma · via iNaturalist

purple lettuces

Prenanthes

Prenanthes is a genus of plant in the family Asteraceae, often referred to as rattlesnake root.

Molecular analysis in 2009 revealed that the genus as traditionally envisioned was polyphyletic, meaning that it is a conglomeration of species not closely related to one another. The genus formerly included species now placed in Aetheorhiza, Askellia, Brickellia, Chondrilla, Crepidiastrum, Crepis, Emilia, Erythroseris, Faberia, Hololeion, Hypochaeris, Ixeris, Lactuca, Lapsanastrum, Launaea, Lygodesmia, Nabalus, Notoseris, Paraprenanthes, Parasenecio, Picrosia, Sonchella, Sonchus, Soroseris, Stephanomeria, Trixis, and Youngia.

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4 branches of this genus, most-observed first

purple lettuce

speciesPrenanthes purpurea

Prenanthes petiolata

speciesPrenanthes petiolata

Prenanthes tanakae

speciesPrenanthes tanakae

Prenanthes subpeltata

speciesPrenanthes subpeltata

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Where it lives

Recorded sightings

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geo-referenced records in GBIF, from museums, herbaria and field observers.

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In the stacks

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Every page naming Prenanthes in the Biodiversity Heritage Library →

This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 62252.