Flower Color

• Yellow

Inflorescence Type (How the flowers are arranged on the plant)

• Solitary, terminal

Number of Petals

• 5 petals

Petal Separation

• Completely free to base

Petal Tip

• Rounded
• Square

Flower Symmetry

• Flowers regular

Flower Length (Head length in the Asteraceae)

• 8 mm (.32 inch)
• 9 mm (.36 inch)
• 1.0 cm (.40 inch)
• 1.5 cm (.6 inch)

Flower Width (Head width in the Asteraceae)

• 8 mm (.32 inch)
• 9 mm (.36 inch)
• 1.0 cm (.40 inch)
• 1.5 cm (.60 inch)
• 2.0 cm (.80 inch)

Number of Sepals

• 5 sepals

Sepal Separation

• Completely free to base

Sepal Tip

• Pointed

Flower Sex

• Bisexual (perfect)

Number of Styles

• More than 10 styles

Number of Stamens

• more than 10 stamens

Stamens Attached to the Petals

• Stamens NOT attached to the petals

Stamens Connate (united)

• Filaments or anthers NOT united

Carpel Separation

• Carpels separated

Number of Carpels

• >10 carpels

Ovary Position

• Superior (hypogynous)

Fruit Type

• Achene

Fruit Length at Maturity

• 2 mm (.08 inch)
• 3 mm (.12 inch)

Fruit Width at Maturity

• 1 mm (.04 inch) or less
• 2 mm (.08 inch)

Burs

• Fruit or seed NOT bur-like

Leaf Arrangement

• Alternate

Leaf Type

• Palmately dissected
• Trifoliolate (3 leaflets)

Stipules

• Lacking

Tendrils

• Tendrils absent

Venation

• Palmate

Petiole (leaf stem) Blade Ratio

• Petiole absent (leaf sessile)
• Petiole < 25% total length
• Petiole 25% - 75% total length
• Petiole > 75% total length

Leaf Length (blade PLUS petiole)

• 4 - 10 cm (1.60 - 4.0 inches)
• 1 - 2 dm (4.0 - 8.0 inches)
• 2 - 4 dm (8.0 - 16.0 inches)

Leaf Width

• 2 - 4 cm (.80 - 1.6 inches)
• 4 - 10 cm (1.6 - 4.0 inches)

Leaf Shape (simple leaves only)

• Cordate (heart)
• Palmately 3 lobed
• Palmately 4 - 5 lobed
• Palmately > 5 lobed

Leaf or Leaflet Margin

• Lobed
• Parted

Leaf or Leaflet Blade Base

• Cordate
• Rounded

Leaf or Leaflet Tip

• Acute

Leaf or Leaflet Blade Surface

• Hirsute
• Hispid or setose
• Pubescent

Succulence

• Not succulent

Milky Juice

• Juice NOT milky (watery)

Woodiness

• Herbaceous

Spines or Thorns

• Spines or Thorns ABSENT

Aromatic (vegetative structures)

• Not aromatic

Life Cycle

• Perennial

Growth Habit (while flowering)

• Spreading ascending
• Erect, spherical (bushy)

Plant Height at Maturity

• 2 - 4 dm (8.0 - 16.0 inches)
• 4 - 6 dm (1.3 - 2.0 feet)
• 6 - 8 dm (2.0 - 2.6 feet)
• 8 - 10 dm (2.6 - 3.3 feet)

Wind Dissemination

• Not wind disseminated

Moisture Regime

• Semi-aquatic
• Seasonally saturated
• Mesic

Chlorophyll

• Present

Stem Cross Section

• Round

Flowering Stem Leaves

• Stem leaves greatly reduced

Main Stem Branches

• Main stem branched

Root or Vegetative Propagule

• Fibrous

US State

• Alabama
• Connecticut
• Delaware
• Georgia
• Illinois
• Kansas
• Kentucky
• Massachusetts
• Maine
• Michigan
• Missouri
• Mississippi
• North Carolina
• New Hampshire
• New Jersey
• New York
• Ohio
• Pennsylvania
• South Carolina
• Tennessee
• Virginia
• Wisconsin
• West Virginia
• Indiana
• Maryland
• Rhode Island
• Vermont
• Alaska
• California
• Colorado
• Iowa
• Idaho
• Minnesota
• Montana
• North Dakota
• New Mexico
• Nevada
• Oregon
• South Dakota
• Utah
• Washington
• Wyoming
• Nebraska

Canadian Province or Territory

• British Columbia
• New Brunswick
• Nova Scotia
• Ontario
• Prince Edward Island
• Quebec
• Alberta
• Manitoba
• Newfoundland
• Saskatchewan
• Yukon
• Nunavut
• Northwest Territory

Other

• District of Columbia
• St. Pierre and Miquelon
• Labrador
• Greenland

• Common Weeds of Canada, Mulligan 1987 (ISBN 0-910053-59-9) See page: 43
• Common Weeds of the Canadian Prairies, 1963 (Cat# A53-1136-1) See page: 54
• Common Weeds of the United States, 1971 (ISBN 0-486-20504-5) See page: 186
• Gilkey`s Weeds of the Pacific Northwest, 1980 (ISBN 0-88246-039-0) See page: 115
• How to Know the Weeds, 1972, (ISBN# 0-697-04880-2) See page: 68
• Identification Guide to the Weeds of Quebec, 1999 (ISBN# 2-89457-174-7) See page: 141
• Manual of Ohio Weeds, 1931 Ohio Ag. Exp. Station Bull. # 475, See page: 37
• Northwest Weeds, 1990 (ISBN 0-87842-249-8) See page: 55
• Ontario Weeds, 1992 Agdex 640, Publication #505 See page: 83
• Weeds, 1955 (1980) Walter Conrad Muenscher, ISBN# 0-8014-1266-8 See page: 220, 221
• Weeds, A Golden Guide, 1972 ISBN#0-307-24353-2 See page: 57
• Weeds of California and other Western States, 2007 (ISBN 13: 978-1-879906-69-3) See Page: 1396
• Weeds of Canada, 1970 Canada Dept. of Ag., Pub. # 948, See page: 71
• Weeds of Nova Scotia, 1986 (ISBN# 0-88871-063) See page: 12
• Weeds of the North Central States, 1981 Univ. of Illinois, Urbana - Champaign Bulletin # 772, See page: 83
• Weeds of the Northeast, 1956, Univ. of Delaware Field Manual #1 See species #: 339
• Weeds of the Northeast, 1997 Cornell University ISBN# 0-8014-8334-4 See page: 294
• Weeds of the Northern United States and Canada, 1964 Montgomery See page: 57
• Weeds of the Northern U.S, and Canada, 1999 Royer and Dickinson, (ISBN# 1-55105-221-0) See page: 116 - 117
• Weeds of the United States and Their Control, Lorenzi 1987, ISBN# 0-442-25884-4 See page: 144
• Weeds of the West, 1992 (ISBN 0941570-13-4) See page: 530
• Weeds of the West, 2000 (ISBN 0941570-13-4) See page: 524
• Wildly Successful Plants, A Handbook of North American Weeds, 1977 (ISBN# 0-02-528850-4) See page: 24, 157
• Listed as a `Weed` by the Biota of North America Program, 2008 x
• Listed in the WSSA Composite List of Weeds X