''Tiedemannia'' is a small genus of flowering plants in the carrot family known as cowbanes and dropworts. Species in this genus have been formerly classified in the genera ''

Conium ''Conium'' ( or ) is a genus of flowering plants in the family Apiaceae. , Plants of the World Online accepts six species. All species of the genus are poisonous to humans. ''C. maculatum'', also known as hemlock, is infamous for being highly ...

'', '' Oenanthe'', and ''

Oxypolis ''Oxypolis'' is a small genus of North American flowering plants in the carrot family known as cowbane, water dropwort, dropwort, hog-fennel, and pig-potato. , Kew's Plants of the World Online Plants of the World Online (POWO) is an online ...

''. ,

Kew Kew () is a district in the London Borough of Richmond upon Thames. Its population at the 2011 census was 11,436. Kew is the location of the Royal Botanic Gardens ("Kew Gardens"), now a World Heritage Site, which includes Kew Palace. Kew is ...

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 ...

accepts two species in the genus ''Tiedemannia'': *''

Tiedemannia canbyi ''Tiedemannia canbyi'' (syn. ''Oxypolis canbyi'') is a rare species of flowering plant in the carrot family known as Canby's dropwort and Canby's cowbane. It is native to the southeastern United States, where it occurs on the Atlantic coastal pl ...

'' – Canby's cowbane, Canby's dropwort *''

Tiedemannia filiformis ''Tiedemannia filiformis'' (syn. ''Oxypolis filiformis'') is a species of flowering plant in the carrot family known by the common names water cowbane and water dropwort. It grows in swamps, freshwater wetlands, and along the borders of ponds in ...

'' – water cowbane, water dropwort

References

Apioideae genera {{Apiaceae-stub