Flower Color

• Green

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

• Axillary cluster
• Axillary spikes
• Panicle

Number of Petals

• 0 (no petals)

Flower Symmetry

• Flowers regular

Flower Length (Head length in the Asteraceae)

• < 1 mm (< .04 inch)
• 1 mm (.04 inch)

Flower Width (Head width in the Asteraceae)

• < 1 mm (< .04 inch)
• 1 mm (.04 inch)

Number of Sepals

• 3 sepals
• 4 sepals
• 5 sepals

Sepal Separation

• United at base < 25% length

Sepal Tip

• Pointed
• Rounded

Flower Sex

• Bisexual (perfect)

Number of Styles

• 2 styles

Number of Stamens

• 1 stamen
• 3 stamens
• 4 stamens
• 5 stamens

Stamens Attached to the Petals

• Stamens NOT attached to the petals

Stamens Connate (united)

• Filaments or anthers NOT united

Carpel Separation

• Carpels united (or one)

Number of Carpels

• 1 carpel
• 2 carpels

Ovary Position

• Superior (hypogynous)

Fruit Type

• Utricle

Fruit Length at Maturity

• 1 mm (.04 inch) or less

Fruit Width at Maturity

• 1 mm (.04 inch) or less

Burs

• Fruit or seed NOT bur-like

Leaf Arrangement

• Alternate

Leaf Type

• Simple (including lobed leaves)

Stipules

• Lacking

Tendrils

• Tendrils absent

Venation

• Pinnate

Petiole (leaf stem) Blade Ratio

• Petiole < 25% total length
• Petiole 25% - 75% total length

Leaf Length (blade PLUS petiole)

• 2 - 4 cm (.80 - 1.60 inches)
• 4 - 10 cm (1.60 - 4.0 inches)

Leaf Width

• 1 - 2 cm (.40 - .80 inch)
• 2 - 4 cm (.80 - 1.6 inches)

Leaf Shape (simple leaves only)

• Lanceolate
• Oblong
• Ovate
• Pinnately lobed

Succulence

• Succulent
• Not succulent

Leaf or Leaflet Margin

• Lobed

Leaf or Leaflet Blade Base

• Acute (cuneate)

Leaf or Leaflet Tip

• Rounded (obtuse)

Leaf or Leaflet Blade Surface

• Glabrous (NO hairs)
• Scurfy (mealy)

Milky Juice

• Juice NOT milky (watery)

Woodiness

• Herbaceous

Spines or Thorns

• Spines or Thorns ABSENT

Aromatic (vegetative structures)

• Not aromatic

Life Cycle

• Annual

Growth Habit (while flowering)

• Spreading ascending
• Erect, spherical (bushy)

Plant Height at Maturity

• 1 - 2 dm (4.0 - 8.0 inches)
• 2 - 4 dm (8.0 - 16.0 inches)
• 4 - 6 dm (1.3 - 2.0 feet)

Wind Dissemination

• Not wind disseminated

Moisture Regime

• Seasonally saturated
• Mesic

Chlorophyll

• Present

Stem Cross Section

• Ridged
• Round

Flowering Stem Leaves

• Stem uniformly leafy

Main Stem Branches

• Main stem branched

Root or Vegetative Propagule

• Tap Root

US State

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

Canadian Province or Territory

• New Brunswick
• Nova Scotia
• Ontario
• Prince Edward Island
• Quebec
• Newfoundland

Other

• Labrador
• Greenland

• Common Weeds of the Canadian Prairies, 1963 (Cat# A53-1136-1) See page: 30
• Identification Guide to the Weeds of Quebec, 1999 (ISBN# 2-89457-174-7) See page: 40
• Manual of Ohio Weeds, 1931 Ohio Ag. Exp. Station Bull. # 475, See page: 54
• Ontario Weeds, 1992 Agdex 640, Publication #505 See page: 62
• Weeds, 1955 (1980) Walter Conrad Muenscher, ISBN# 0-8014-1266-8 See page: 184, 186
• Weeds of California and other Western States, 2007 (ISBN 13: 978-1-879906-69-3) See Page: 608
• Weeds of Canada, 1970 Canada Dept. of Ag., Pub. # 948, See page: 49
• Weeds of Nebraska and the Great Plains, 1994 (ISBN 0939870-00-4) See page: 255
• Weeds of the Northern United States and Canada, 1964 Montgomery See page: 39
• Weeds of the Northern U.S, and Canada, 1999 Royer and Dickinson, (ISBN# 1-55105-221-0) See page: 157
• Listed as a `Weed` by the Biota of North America Program, 2008 X
• Listed in the WSSA Composite List of Weeds X