Taxon:  Oxypolis rigidior (L.) Raf.



Summary
Genus:
Oxypolis
Family:
Apiaceae (alt. Umbelliferae)
Subfamily:
Apioideae
Tribe:
Oenantheae
Nomen number:
26239
Place of publication:
Ser., Bull. bot. 218.  1830 "rigida"
Comment:
Rafinesque cited "Sium rigidium" L. as synonym
Verified:
04/05/1994 ARS Systematic Botanists.
Accessions:
5 (5  active, 1  available) in National Plant Germplasm System.  (Map it)
Other conspecific taxa
Autonyms (not in current use), synonyms and invalid designations
Basionym
Sium rigidius L.

No images


Conservation Status

Reference(s)
  1. Browne, E. T. & R. Athey. 1992. Vascular plants of Kentucky: an annotated checklist
  2. Chester, E. W. et al. 1993-1997. Atlas of Tennessee vascular plants.
  3. Correll, D. S. & M. C. Johnston. 1970. Manual of the vascular plants of Texas
  4. Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 188.
  5. Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
  6. Gleason, H. A. & A. Cronquist. 1963. Manual of vascular plants of northeastern United States and adjacent Canada.
  7. Gleason, H. A. & A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2
  8. Kartesz, J. T. & R. Kartesz. 1980. A synonomized checklist of the flora of the United States, Canada, and Greenland.
  9. Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York.
  10. Mathias, M. E. & L. Constance. 1945. Umbelliferae. In: Britton, N. L. et al., eds. ser. 1; C. T. Rogerson, ed. ser. 2, North American flora 28B:220. Note: ser. 1, 1905-1957; ser. 2, 1954-1972
  11. Radford, A. E. et al. 1964. Manual of the vascular flora of the Carolinas.
  12. Rhoads, A. F. & W. M. Klein, Jr. 1993. The vascular flora of Pennsylvannia. Annotated checklist and atlas. Note: American Philosophical Society, Philadelphia
  13. Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
  14. Steyermark, J. A. 1977. Flora of Missouri.
  15. Stone, W. 1973. The plants of southern New Jersey
  16. Strausbaugh, T. D. & E. L. Core. 1978. Flora of West Virginia, ed. 2.
  17. Voss, E. 1972-. Michigan flora.
  18. Wunderlin, R. P. 1998. Guide to the vascular plants of Florida
Common names
LanguageNameAlternate namenoteseqCitation
Englishcowbane  1Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
Englishstiff cowbane  1Wunderlin, R. P. 1998. Guide to the vascular plants of Florida
Englishwater-dropwort  1Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
English (Canada)cowbane Agriculture & Agri-Food Canada official name2Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 188.
French (Canada)oxypolis rigide Agriculture & Agroalimentaire Canada nom officiel2Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 188.
Distribution
order_codeStatusContinentSubcontinentCountryStateNoteReference
1NativeNorthern AmericaEastern CanadaCanadaOntarios.Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
1NativeNorthern AmericaNorth-Central U.S.A.United StatesIllinois Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaNorth-Central U.S.A.United StatesIowa Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaNorth-Central U.S.A.United StatesMinnesota Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaNorth-Central U.S.A.United StatesMissouri Steyermark, J. A. 1977. Flora of Missouri.
1NativeNorthern AmericaNorth-Central U.S.A.United StatesOklahoma Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaNorth-Central U.S.A.United StatesWisconsin Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaNortheastern U.S.A.United StatesIndiana Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaNortheastern U.S.A.United StatesMichigan Voss, E. 1972-. Michigan flora.
1NativeNorthern AmericaNortheastern U.S.A.United StatesNew Jersey Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaNortheastern U.S.A.United StatesNew Yorke. (Suffolk Co.)Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaNortheastern U.S.A.United StatesOhio Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaNortheastern U.S.A.United StatesPennsylvania Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaNortheastern U.S.A.United StatesWest Virginia Strausbaugh, T. D. & E. L. Core. 1978. Flora of West Virginia, ed. 2.
1NativeNorthern AmericaSouth-Central U.S.A.United StatesTexas Correll, D. S. & M. C. Johnston. 1970. Manual of the vascular plants of Texas
1NativeNorthern AmericaSoutheastern U.S.A.United StatesAlabama Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesArkansas Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesDelaware Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesDistrict of Columbia Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesFloridaw.Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesGeorgia Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesKentucky Browne, E. T. & R. Athey. 1992. Vascular plants of Kentucky: an annotated checklist
1NativeNorthern AmericaSoutheastern U.S.A.United StatesLouisiana Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesMaryland Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesMississippi Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesNorth Carolina Radford, A. E. et al. 1964. Manual of the vascular flora of the Carolinas.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesSouth Carolina Radford, A. E. et al. 1964. Manual of the vascular flora of the Carolinas.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesTennessee Chester, E. W. et al. 1993-1997. Atlas of Tennessee vascular plants.
1NativeNorthern AmericaSoutheastern U.S.A.United StatesVirginia Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
Native
Northern America
  • EASTERN CANADA: Canada [Ontario (s.)]
  • NORTHEASTERN U.S.A.: United States [Indiana, Michigan, New Jersey, New York (e. (Suffolk Co.)), Ohio, Pennsylvania, West Virginia]
  • NORTH-CENTRAL U.S.A.: United States [Illinois, Iowa, Minnesota, Missouri, Oklahoma, Wisconsin]
  • SOUTHEASTERN U.S.A.: United States [Alabama, Arkansas, Delaware, Florida (w.), Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, District of Columbia]
  • SOUTH-CENTRAL U.S.A.: United States [Texas]

Reference(s)
  1. Browne, E. T. & R. Athey. 1992. Vascular plants of Kentucky: an annotated checklist
  2. Chester, E. W. et al. 1993-1997. Atlas of Tennessee vascular plants.
  3. Correll, D. S. & M. C. Johnston. 1970. Manual of the vascular plants of Texas
  4. Feist, M. E. 2011. A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae). Unpublished dissertation (University of Illinois at Urbana-Champaign) 101-102.
  5. Radford, A. E. et al. 1964. Manual of the vascular flora of the Carolinas.
  6. Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
  7. Steyermark, J. A. 1977. Flora of Missouri.
  8. Strausbaugh, T. D. & E. L. Core. 1978. Flora of West Virginia, ed. 2.
  9. Voss, E. 1972-. Michigan flora.
Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2026. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: https://npgstest.ars-grin.gov/gringlobal/taxon/taxonomydetail?id=26239. Accessed 17 April 2026.