Flower Color

• White

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

• Cyme (simple or branched)
• Panicle

Number of Petals

• 5 petals
• 10 petals

Petal Separation

• Completely free to base

Petal Tip

• Bilobed
• Rounded

Flower Symmetry

• Flowers regular

Flower Length (Head length in the Asteraceae)

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

Number of Sepals

• 5 sepals

Sepal Separation

• United > 75% of length

Sepal Tip

• Pointed

Flower Sex

• Unisexual (monoecious or dioecious)
• Bisexual (perfect)

Number of Styles

• Styles lacking (male flowers only)
• 3 styles

Number of Stamens

• stamens lacking (female flowers only)
• 10 stamens

Stamens Attached to the Petals

• Stamens NOT attached to the petals
• Stamens attached to the petals

Stamens Connate (united)

• Filaments or anthers NOT united

Carpel Separation

• Carpels united (or one)

Number of Carpels

• 0 (male flowers only or plants producing spores)
• 3 carpels

Ovary Position

• Superior (hypogynous)

Fruit Type

• Capsule, 3-celled

Fruit Length at Maturity

• 1.0 cm (.40 inch)
• 1.5 cm (.60 inch)

Fruit Width at Maturity

• 5 mm (.20 inch)
• 6 mm (.24 inch)
• 7 mm (.28 inch)
• 8 mm (.32 inch)

Burs

• Fruit or seed NOT bur-like

Leaf Arrangement

• Opposite

Leaf Type

• Simple (including lobed leaves)

Stipules

• Lacking

Tendrils

• Tendrils absent

Venation

• Arcuate
• Pinnate

Petiole (leaf stem) Blade Ratio

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

Leaf Length (blade PLUS petiole)

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

Leaf Width

• 5 - 10 mm (.20 - .40 inch)
• 1 - 2 cm (.40 - .80 inch)
• 2 - 4 cm (.80 - 1.6 inches)

Leaf Shape (simple leaves only)

• Elliptic
• Oblanceolate
• Obovate
• Ovate
• Spatulate

Leaf or Leaflet Margin

• Entire

Leaf or Leaflet Blade Base

• Acuminate (attenuate)
• Clasping

Leaf or Leaflet Tip

• Acute
• Rounded (obtuse)

Leaf or Leaflet Blade Surface

• Glabrous (NO hairs)
• Glaucous

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

• Biennial

Growth Habit (while flowering)

• Erect, columnar (narrow)
• 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)

Wind Dissemination

• Not wind disseminated

Moisture Regime

• Mesic

Chlorophyll

• Present

Stem Cross Section

• Round

Flowering Stem Leaves

• Stem uniformly leafy

Main Stem Branches

• Main stem branched

Root or Vegetative Propagule

• Tap Root

US State

• Illinois
• Kentucky
• Massachusetts
• Maine
• Michigan
• Missouri
• Mississippi
• New Hampshire
• New Jersey
• New York
• Ohio
• Pennsylvania
• Wisconsin
• West Virginia
• Indiana
• Maryland
• Vermont
• Colorado
• Iowa
• Minnesota
• Montana
• North Dakota
• South Dakota
• Wyoming

Canadian Province or Territory

• British Columbia
• Ontario
• Quebec
• Alberta
• Manitoba
• Saskatchewan

• Common Weeds of the Canadian Prairies, 1963 (Cat# A53-1136-1) See page: 59
• Ontario Weeds, 1992 Agdex 640, Publication #505 See page: 79
• Weeds, 1955 (1980) Walter Conrad Muenscher, ISBN# 0-8014-1266-8 See page: 209, 212
• Weeds of Canada, 1970 Canada Dept. of Ag., Pub. # 948, See page: 66
• Weeds of the Northern United States and Canada, 1964 Montgomery See page: 53
• Weeds of the Northern U.S, and Canada, 1999 Royer and Dickinson, (ISBN# 1-55105-221-0) See page: 325
• Listed in the WSSA Composite List of Weeds X