Taxon: Pteridium aquilinum (L.) Kuhn var. latiusculum (Desv.) Underw. ex A. Heller

Summary

Genus:

Pteridium

Family:

Dennstaedtiaceae

Nomen number:

418446

Place of publication:

Cat. N. Amer. pl. ed. 3:17. 1909

Verified:

04/24/2001 ARS Systematic Botanists.

Accessions:

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

Other conspecific taxa

Pteridium aquilinum (L.) Kuhn (3 active accession[s])
Pteridium aquilinum (L.) Kuhn var. aquilinum (0 active accession[s])

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

Basionym
Pteris latiuscula Desv.

Homotypic Synonym(s)
Pteridium latiusculum (Desv.) Hieron. ex R. E. Fr.

No images

Conservation Status

Reference(s)

Chinese Academy of Sciences. 1959-. Flora reipublicae popularis sinicae.
Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 10. Note: lists as Pteridium aquilinum subsp. aquilinum var. latiusculum
FNA Editorial Committee. 1993-. Flora of North America. 2:204.
Grubov, V. I. 2001. Key to the vascular plants of Mongolia Note: treats as Pteridium aquilinum (L.) Kuhn
Iwatsuki, K. et al. 1993-. Flora of Japan.
Jalas, J. & J. Suominen. 1972-. Atlas florae europaeae.
Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
Laasimer, L. et al., eds. 1993-. Flora of the Baltic countries; compendium of vascular plants. Note: treats as Pteridium aquilinum (L.) Kuhn
Mickel, J. T. & A. R. Smith. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88:1-1054.
Oh, S.-Y. & J.-H. Pak. 2001. Distribution maps of vascular plants in Korea Note: Academybook Publishing Co., Seoul.
Tryon, R. M. 1941. A revision of the genus Pteridium. Rhodora 43:41-48.
Tutin, T. G. et al., eds. 1993. Flora europaea, ed. 2. Note: = Pteridium aquilinum subsp. latiusculum (Desf.) C. N. Page
Wofford, B. E. Database of Tennessee vascular plants (on-line resource). Note: = Pteridium aquilinum (L.) Kuhn

Common names

Language	Name	seq	Citation
English (Canada)	eastern bracken	2	Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 10. Note: lists as Pteridium aquilinum subsp. aquilinum var. latiusculum
French (Canada)	fougère-aigle de l’Est	2	Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 10. Note: lists as Pteridium aquilinum subsp. aquilinum var. latiusculum
Japanese Rōmaji	warabi	2	Iwatsuki, K. et al. 1993-. Flora of Japan.

Distribution

order_code	Status	Continent	Subcontinent	Country	State	Reference
1	Native	Asia-Temperate	China	China		Chinese Academy of Sciences. 1959-. Flora reipublicae popularis sinicae.
1	Native	Asia-Temperate	Eastern Asia	Japan	Hokkaidô	Iwatsuki, K. et al. 1993-. Flora of Japan.
1	Native	Asia-Temperate	Eastern Asia	Japan	Honshu	Iwatsuki, K. et al. 1993-. Flora of Japan.
1	Native	Asia-Temperate	Eastern Asia	Japan	Kyushu	Iwatsuki, K. et al. 1993-. Flora of Japan.
1	Native	Asia-Temperate	Eastern Asia	Japan	Ryukyu Islands	Iwatsuki, K. et al. 1993-. Flora of Japan.
1	Native	Asia-Temperate	Eastern Asia	Japan	Shikoku	Iwatsuki, K. et al. 1993-. Flora of Japan.
1	Native	Asia-Temperate	Eastern Asia	Korea, North		Oh, S.-Y. & J.-H. Pak. 2001. Distribution maps of vascular plants in Korea Note: Academybook Publishing Co., Seoul.
1	Native	Asia-Temperate	Eastern Asia	Korea, South		Oh, S.-Y. & J.-H. Pak. 2001. Distribution maps of vascular plants in Korea Note: Academybook Publishing Co., Seoul.
1	Native	Asia-Temperate	Eastern Asia	Taiwan		Li, H. L. et al., eds. 1975-1979. Flora of Taiwan. Note: = Pteridium aquilinum subsp. latiusculum (Desf.) Shieh
1	Native	Asia-Temperate	Mongolia	Mongolia		Grubov, V. I. 2001. Key to the vascular plants of Mongolia Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Russian Far East	Russian Federation	Amur	Tryon, R. M. 1941. A revision of the genus Pteridium. Rhodora 43:41-48.
1	Native	Asia-Temperate	Russian Far East	Russian Federation	Kamčatskij kraj	Tryon, R. M. 1941. A revision of the genus Pteridium. Rhodora 43:41-48.
1	Native	Asia-Temperate	Russian Far East	Russian Federation	Primorye	Tryon, R. M. 1941. A revision of the genus Pteridium. Rhodora 43:41-48.
1	Native	Asia-Temperate	Russian Far East	Russian Federation	Sakhalin	Tryon, R. M. 1941. A revision of the genus Pteridium. Rhodora 43:41-48.
1	Native	Asia-Temperate	Siberia	Russian Federation	Altay	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Siberia	Russian Federation	Buryatia	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Siberia	Russian Federation	Chita	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Siberia	Russian Federation	Gorno-Altay	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Siberia	Russian Federation	Irkutsk	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Siberia	Russian Federation	Kemerovskaja oblast'	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Siberia	Russian Federation	Krasnoyarsk	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Siberia	Russian Federation	Kurganskaja oblast'	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Siberia	Russian Federation	Novosibirsk	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Siberia	Russian Federation	Omsk	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Siberia	Russian Federation	Tomsk	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Siberia	Russian Federation	Tyumen	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Siberia	Russian Federation	Tyva, Respublika	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Asia-Temperate	Siberia	Russian Federation	Yakutia-Sakha	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Europe	Eastern Europe	Estonia		Laasimer, L. et al., eds. 1993-. Flora of the Baltic countries; compendium of vascular plants. Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Europe	Eastern Europe	Latvia		Laasimer, L. et al., eds. 1993-. Flora of the Baltic countries; compendium of vascular plants. Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Europe	Eastern Europe	Lithuania		Laasimer, L. et al., eds. 1993-. Flora of the Baltic countries; compendium of vascular plants. Note: treats as Pteridium aquilinum (L.) Kuhn
1	Native	Europe	Eastern Europe	Russian Federation-European part	European part	Jalas, J. & J. Suominen. 1972-. Atlas florae europaeae.
1	Native	Europe	Middle Europe	Czech Republic		Tryon, R. M. 1941. A revision of the genus Pteridium. Rhodora 43:41-48.
1	Native	Europe	Middle Europe	Germany		Tryon, R. M. 1941. A revision of the genus Pteridium. Rhodora 43:41-48.
1	Native	Europe	Northern Europe	Finland		Tryon, R. M. 1941. A revision of the genus Pteridium. Rhodora 43:41-48.
1	Native	Europe	Northern Europe	Norway		Tryon, R. M. 1941. A revision of the genus Pteridium. Rhodora 43:41-48.
1	Native	Europe	Northern Europe	Sweden		Tryon, R. M. 1941. A revision of the genus Pteridium. Rhodora 43:41-48.
1	Native	Northern America	Eastern Canada	Canada	New Brunswick	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Eastern Canada	Canada	Newfoundland and Labrador	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Eastern Canada	Canada	Nova Scotia	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Eastern Canada	Canada	Ontario	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Eastern Canada	Canada	Prince Edward Island	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Eastern Canada	Canada	Québec	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Eastern Canada	St. Pierre and Miquelon		FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	North-Central U.S.A.	United States	Illinois	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	North-Central U.S.A.	United States	Iowa	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	North-Central U.S.A.	United States	Minnesota	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	North-Central U.S.A.	United States	Missouri	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	North-Central U.S.A.	United States	North Dakota	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	North-Central U.S.A.	United States	South Dakota	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	North-Central U.S.A.	United States	Wisconsin	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northeastern U.S.A.	United States	Connecticut	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northeastern U.S.A.	United States	Indiana	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northeastern U.S.A.	United States	Maine	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northeastern U.S.A.	United States	Massachusetts	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northeastern U.S.A.	United States	Michigan	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northeastern U.S.A.	United States	New Hampshire	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northeastern U.S.A.	United States	New Jersey	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northeastern U.S.A.	United States	New York	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northeastern U.S.A.	United States	Ohio	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northeastern U.S.A.	United States	Pennsylvania	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northeastern U.S.A.	United States	Rhode Island	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northeastern U.S.A.	United States	Vermont	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northeastern U.S.A.	United States	West Virginia	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Northern Mexico	Mexico	Coahuila de Zaragoza	Mickel, J. T. & A. R. Smith. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88:1-1054.
1	Native	Northern America	Northern Mexico	Mexico	Durango	Mickel, J. T. & A. R. Smith. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88:1-1054.
1	Native	Northern America	Northern Mexico	Mexico	Nuevo León	Mickel, J. T. & A. R. Smith. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88:1-1054.
1	Native	Northern America	Southeastern U.S.A.	United States	Alabama	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Southeastern U.S.A.	United States	Arkansas	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Southeastern U.S.A.	United States	Delaware	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Southeastern U.S.A.	United States	District of Columbia	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Southeastern U.S.A.	United States	Florida	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Southeastern U.S.A.	United States	Georgia	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Southeastern U.S.A.	United States	Kentucky	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Southeastern U.S.A.	United States	Louisiana	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Southeastern U.S.A.	United States	Maryland	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Southeastern U.S.A.	United States	Mississippi	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Southeastern U.S.A.	United States	North Carolina	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Southeastern U.S.A.	United States	South Carolina	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Southeastern U.S.A.	United States	Tennessee	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Western Canada	Canada	Alberta	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Western Canada	Canada	British Columbia	FNA Editorial Committee. 1993-. Flora of North America. 2:204.
1	Native	Northern America	Western Canada	Canada	Manitoba	FNA Editorial Committee. 1993-. Flora of North America. 2:204.

Native
Asia-Temperate

SIBERIA: Russian Federation [Altay, Buryatia, Chita, Gorno-Altay, Irkutsk, Kemerovskaja oblast', Krasnoyarsk, Kurganskaja oblast', Novosibirsk, Omsk, Tomsk, Tyumen, Tyva, Respublika, Yakutia-Sakha]
MONGOLIA: Mongolia
RUSSIAN FAR EAST: Russian Federation [Primorye, Amur, Kamčatskij kraj, Sakhalin]
CHINA: China
EASTERN ASIA: Japan [Hokkaidô, Honshu, Kyushu, Ryukyu Islands, Shikoku], Korea, South, Korea, North, Taiwan

Europe

NORTHERN EUROPE: Finland, Norway, Sweden
MIDDLE EUROPE: Czech Republic, Germany
EASTERN EUROPE: Russian Federation-European part [European part], Estonia, Lithuania, Latvia

Northern America

EASTERN CANADA: Canada [Québec, Nova Scotia, Ontario, Prince Edward Island, New Brunswick, Newfoundland and Labrador], St. Pierre and Miquelon
WESTERN CANADA: Canada [Alberta, Manitoba, British Columbia]
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, Minnesota, Missouri, North Dakota, South Dakota, Wisconsin]
SOUTHEASTERN U.S.A.: United States [Alabama, Arkansas, Delaware, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, District of Columbia]
NORTHERN MEXICO: Mexico [Coahuila de Zaragoza, Durango, Nuevo León]

Reference(s)

Chinese Academy of Sciences. 1959-. Flora reipublicae popularis sinicae.
FNA Editorial Committee. 1993-. Flora of North America. 2:204.
Grubov, V. I. 2001. Key to the vascular plants of Mongolia Note: treats as Pteridium aquilinum (L.) Kuhn
Iwatsuki, K. et al. 1993-. Flora of Japan.
Jalas, J. & J. Suominen. 1972-. Atlas florae europaeae.
Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation) Note: treats as Pteridium aquilinum (L.) Kuhn
Laasimer, L. et al., eds. 1993-. Flora of the Baltic countries; compendium of vascular plants. Note: treats as Pteridium aquilinum (L.) Kuhn
Li, H. L. et al., eds. 1975-1979. Flora of Taiwan. Note: = Pteridium aquilinum subsp. latiusculum (Desf.) Shieh
Mickel, J. T. & A. R. Smith. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88:1-1054.
Oh, S.-Y. & J.-H. Pak. 2001. Distribution maps of vascular plants in Korea Note: Academybook Publishing Co., Seoul.
Tryon, R. M. 1941. A revision of the genus Pteridium. Rhodora 43:41-48.

Economic Uses

Usage	Type	Note	Reference
Human food	starch	for making candy	Iwatsuki, K. et al. 1993-. Flora of Japan.
Human food	vegetable	young fiddleheads	Iwatsuki, K. et al. 1993-. Flora of Japan.
Vertebrate poisons	mammals		Cordy, D. R. 1957. Experimental production and control of bracken fern poisoning in rats. J. Amer. Veterin. Med. Assoc. 130:333-334. Note: as Pteridium latiusculum

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=418446. Accessed 12 May 2026.