Taxon: Osmorhiza claytonii (Michx.) C. B. Clarke

Summary

Genus:

Osmorhiza

Family:

Apiaceae (alt. Umbelliferae)

Subfamily:

Apioideae

Tribe:

Scandiceae

Subtribe:

Scandicinae

Nomen number:

419588

Place of publication:

J. D. Hooker, Fl. Brit. India 2:690. 1879 "claytoni"

Verified:

12/04/2001 ARS Systematic Botanists.

Accessions:

3 (3 active, 0 available) in National Plant Germplasm System. (Map it)

Other conspecific taxa

Autonyms (not in current use), synonyms and invalid designations

Basionym
Myrrhis claytonii Michx.

No images

Conservation Status

Reference(s)

Gleason, H. A. & A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2
Haines, A. & T. F. Vining. 1998. Flora of Maine: a manual for identification of native and naturalized vascular plants of Maine.
Lowry, P. P., II & A. G. Jones. 1984. Systematics of Osmorhiza Raf. (Apiaceae: Apioideae). Ann. Missouri Bot. Gard. 71:1152.
Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York.
McGregor, R. L. et al. (The Great Plains Flora Association). 1977. Atlas of the Flora of the Great Plains. Note: lists as "claytoni"
McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains. Note: lists as "claytoni"
Ownbey, G. B. & T. Morley. 1991. Vascular plants of Minnesota: a checklist and atlas
Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
Smith, E. B. 1978. An atlas and annotated list of the vascular plants of Arkansas Note: lists as "claytoni"
Steyermark, J. A. 1977. Flora of Missouri. Note: lists as "claytoni"
Strausbaugh, T. D. & E. L. Core. 1978. Flora of West Virginia, ed. 2. Note: lists as "claytoni"
Voss, E. 1972-. Michigan flora.
Wofford, B. E. Database of Tennessee vascular plants (on-line resource).

Common names

Language	Name	Alternate name	note	seq	Citation
English	Clayton sweetroot			1	Lowry, P. P., II & A. G. Jones. 1984. Systematics of Osmorhiza Raf. (Apiaceae: Apioideae). Ann. Missouri Bot. Gard. 71:1152.
English	hairy sweet cicely			1	Strausbaugh, T. D. & E. L. Core. 1978. Flora of West Virginia, ed. 2. Note: lists as "claytoni"

Distribution

order_code	Status	Continent	Subcontinent	Country	State	Note	Reference
1	Native	Northern America	Eastern Canada	Canada	New Brunswick		Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
1	Native	Northern America	Eastern Canada	Canada	Newfoundland and Labrador		Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
1	Native	Northern America	Eastern Canada	Canada	Nova Scotia		Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
1	Native	Northern America	Eastern Canada	Canada	Ontario		Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
1	Native	Northern America	Eastern Canada	Canada	Prince Edward Island		Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
1	Native	Northern America	Eastern Canada	Canada	Québec		Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
1	Native	Northern America	North-Central U.S.A.	United States	Illinois
1	Native	Northern America	North-Central U.S.A.	United States	Iowa
1	Native	Northern America	North-Central U.S.A.	United States	Kansas	e.	McGregor, R. L. et al. (The Great Plains Flora Association). 1977. Atlas of the Flora of the Great Plains. Note: lists as "claytoni"
1	Native	Northern America	North-Central U.S.A.	United States	Minnesota		Ownbey, G. B. & T. Morley. 1991. Vascular plants of Minnesota: a checklist and atlas
1	Native	Northern America	North-Central U.S.A.	United States	Missouri		Steyermark, J. A. 1977. Flora of Missouri. Note: lists as "claytoni"
1	Native	Northern America	North-Central U.S.A.	United States	Nebraska	e. & n.	McGregor, R. L. et al. (The Great Plains Flora Association). 1977. Atlas of the Flora of the Great Plains. Note: lists as "claytoni"
1	Native	Northern America	North-Central U.S.A.	United States	North Dakota	e.	McGregor, R. L. et al. (The Great Plains Flora Association). 1977. Atlas of the Flora of the Great Plains. Note: lists as "claytoni"
1	Native	Northern America	North-Central U.S.A.	United States	South Dakota	e.	McGregor, R. L. et al. (The Great Plains Flora Association). 1977. Atlas of the Flora of the Great Plains. Note: lists as "claytoni"
1	Native	Northern America	North-Central U.S.A.	United States	Wisconsin
1	Native	Northern America	Northeastern U.S.A.	United States	Connecticut		Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York.
1	Native	Northern America	Northeastern U.S.A.	United States	Indiana
1	Native	Northern America	Northeastern U.S.A.	United States	Maine		Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York.
1	Native	Northern America	Northeastern U.S.A.	United States	Massachusetts		Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York.
1	Native	Northern America	Northeastern U.S.A.	United States	Michigan		Voss, E. 1972-. Michigan flora.
1	Native	Northern America	Northeastern U.S.A.	United States	New Hampshire		Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York.
1	Native	Northern America	Northeastern U.S.A.	United States	New Jersey
1	Native	Northern America	Northeastern U.S.A.	United States	New York
1	Native	Northern America	Northeastern U.S.A.	United States	Ohio
1	Native	Northern America	Northeastern U.S.A.	United States	Pennsylvania
1	Native	Northern America	Northeastern U.S.A.	United States	Rhode Island		Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York.
1	Native	Northern America	Northeastern U.S.A.	United States	Vermont		Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York.
1	Native	Northern America	Northeastern U.S.A.	United States	West Virginia		Strausbaugh, T. D. & E. L. Core. 1978. Flora of West Virginia, ed. 2. Note: lists as "claytoni"
1	Native	Northern America	Southeastern U.S.A.	United States	Alabama	n.
1	Native	Northern America	Southeastern U.S.A.	United States	Arkansas		Smith, E. B. 1978. An atlas and annotated list of the vascular plants of Arkansas Note: lists as "claytoni"
1	Native	Northern America	Southeastern U.S.A.	United States	Delaware	n.
1	Native	Northern America	Southeastern U.S.A.	United States	Georgia	n.
1	Native	Northern America	Southeastern U.S.A.	United States	Kentucky
1	Native	Northern America	Southeastern U.S.A.	United States	Maryland
1	Native	Northern America	Southeastern U.S.A.	United States	North Carolina	w. & c.
1	Native	Northern America	Southeastern U.S.A.	United States	South Carolina
1	Native	Northern America	Southeastern U.S.A.	United States	Tennessee		Wofford, B. E. Database of Tennessee vascular plants (on-line resource).
1	Native	Northern America	Southeastern U.S.A.	United States	Virginia
1	Native	Northern America	Western Canada	Canada	Manitoba	s.	Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
1	Native	Northern America	Western Canada	Canada	Saskatchewan	s.e.	Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.

Native
Northern America

EASTERN CANADA: Canada [Québec, Nova Scotia, Ontario, Prince Edward Island, New Brunswick, Newfoundland and Labrador]
WESTERN CANADA: Canada [Saskatchewan (s.e.), Manitoba (s.)]
NORTHEASTERN U.S.A.: United States [Connecticut, Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia]
NORTH-CENTRAL U.S.A.: United States [Illinois, Iowa, Kansas (e.), Minnesota, Missouri, Nebraska (e. & n.), North Dakota (e.), South Dakota (e.), Wisconsin]
SOUTHEASTERN U.S.A.: United States [Alabama (n.), Arkansas, Delaware (n.), Georgia (n.), Kentucky, Maryland, North Carolina (w. & c.), South Carolina, Tennessee, Virginia]

Reference(s)

Magee, D. W. & H. E. Ahles. 1999. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York.
McGregor, R. L. et al. (The Great Plains Flora Association). 1977. Atlas of the Flora of the Great Plains. Note: lists as "claytoni"
Ownbey, G. B. & T. Morley. 1991. Vascular plants of Minnesota: a checklist and atlas
Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
Smith, E. B. 1978. An atlas and annotated list of the vascular plants of Arkansas Note: lists as "claytoni"
Steyermark, J. A. 1977. Flora of Missouri. Note: lists as "claytoni"
Strausbaugh, T. D. & E. L. Core. 1978. Flora of West Virginia, ed. 2. Note: lists as "claytoni"
Voss, E. 1972-. Michigan flora.
Wofford, B. E. Database of Tennessee vascular plants (on-line resource).

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=419588. Accessed 12 May 2026.