Blooms: July - October
Habit: herb
Duration: biennial
Origin: Introduced
Distribution: Introduced throughout the United States
Habitat: Weed of roadsides and disturbed area
Habit: herb
Duration: biennial
Origin: Introduced
Distribution: Introduced throughout the United States
Habitat: Weed of roadsides and disturbed area
Species Description:
General: Coarse, perennial herb up to 1.5 m. tall.
Leaves: Petiolate, the blade narrowly to broadly ovate, often cordate, up to 3 dm. long and 2.5 dm. wide, gradually reduced upward, nearly glabrous on both surfaces.
Flowers: Inflorescence of short racemes arising from the leaf axils and terminal; involucre sub-globose, with narrow, spreading hooked bracts, 1.5-2.5 cm. in diameter overall; corolla tubular with long lobes, purple.
Distinguishing Characteristics: The only other Arctium species found here, A. lappa, has larger involucres and glandular peduncles.
General: Coarse, perennial herb up to 1.5 m. tall.
Leaves: Petiolate, the blade narrowly to broadly ovate, often cordate, up to 3 dm. long and 2.5 dm. wide, gradually reduced upward, nearly glabrous on both surfaces.
Flowers: Inflorescence of short racemes arising from the leaf axils and terminal; involucre sub-globose, with narrow, spreading hooked bracts, 1.5-2.5 cm. in diameter overall; corolla tubular with long lobes, purple.
Distinguishing Characteristics: The only other Arctium species found here, A. lappa, has larger involucres and glandular peduncles.
Accepted Name:
Arctium minus (Hill) Bernh.Synonyms:
(none)
Treated in Flora of the PNW as:
Arctium minus
Additional Resources:
PNW Herbaria Specimens: View list of Arctium minus specimens in the Consortium of Pacific Northwest Herbaria database.
WTU Herbarium Specimens: View list of Arctium minus specimens in the WTU Herbarium database.
Washington Flora Checklist: Arctium minus treatment.
E-Flora BC: Arctium minus atlas page.
CalPhotos: Arctium minus images.
USDA Plants Database: Arctium minus.
Ben Legler, 2004
Ben Legler, 2004
Jim Riley
Ben Legler, 2005
Ben Legler, 2004
Ben Legler, 2004
Ben Legler, 2004
G. D. Carr, 2003
Craig Althen, 2010
Harry Thomas, 2010
Harry Thomas, 2011
Harry Thomas, 2011
Craig Althen, 2012
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 WA Native Plant Society |
