Flower Color

• Yellow

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

• Head
• Panicle

Number of Petals

• 5 petals
• more than 10 petals

Petal Separation

• Completely free to base
• United > 75% of length

Petal Tip

• Pointed
• Rounded

Flower Symmetry

• Flowers regular

Flower Length (Head length in the Asteraceae)

• 3 mm (.12 inch)
• 4 mm (.16 inch)
• 5 mm (.20 inch)

Flower Width (Head width in the Asteraceae)

• 3 mm (.12 inch)
• 4 mm (.16 inch)
• 5 mm (.20 inch)

Number of Sepals

• sepals lacking
• more than 10 sepals

Sepal Separation

• Completely free to base

Sepal Tip

• Pointed
• Rounded

Flower Sex

• Bisexual (perfect)

Number of Styles

• 1 style

Number of Stamens

• 5 stamens

Stamens Attached to the Petals

• Stamens attached to the petals

Stamens Connate (united)

• Anthers united, syngynoecious

Carpel Separation

• Carpels united (or one)

Number of Carpels

• 1 carpel

Ovary Position

• Inferior (epigynous)

Fruit Type

• Achene

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 absent (leaf sessile)

Leaf Length (blade PLUS petiole)

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

Leaf Width

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

Leaf Shape (simple leaves only)

• Linear or filiform

Leaf or Leaflet Margin

• Entire

Leaf or Leaflet Blade Base

• Acuminate (attenuate)

Leaf or Leaflet Tip

• Acuminate (attenuate)
• Acute
• Rounded (obtuse)

Leaf or Leaflet Blade Surface

• Glabrous (NO hairs)
• Glandular
• Punctate
• Scabrous (like sand paper)

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)

• 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)
• 8 - 10 dm (2.6 - 3.3 feet)

Wind Dissemination

• Fruit, seed, or spore wind borne

Moisture Regime

• Semi-aquatic
• Seasonally saturated
• Mesic

Chlorophyll

• Present

Stem Cross Section

• Round

Flowering Stem Leaves

• Stem uniformly leafy

Main Stem Branches

• Main stem branched

Root or Vegetative Propagule

• Rhizomatous

US State

• Alabama
• Connecticut
• Delaware
• Illinois
• Kansas
• Kentucky
• Louisiana
• 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
• Colorado
• Iowa
• Idaho
• Minnesota
• Montana
• North Dakota
• New Mexico
• Oklahoma
• South Dakota
• Washington
• Wyoming
• Nebraska

Canadian Province or Territory

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

Other

• District of Columbia
• St. Pierre and Miquelon

• How to Know the Weeds, 1972, (ISBN# 0-697-04880-2) See page: 192
• Identification Guide to the Weeds of Quebec, 1999 (ISBN# 2-89457-174-7) See page: 83
• Ontario Weeds, 1992 Agdex 640, Publication #505 See page: 227
• Weeds, 1955 (1980) Walter Conrad Muenscher, ISBN# 0-8014-1266-8 See page: 496
• Weeds, A Golden Guide, 1972 ISBN#0-307-24353-2 See page: 121
• Weeds of Nova Scotia, 1986 (ISBN# 0-88871-063) See page: 34
• Weeds of the Northeast, 1956, Univ. of Delaware Field Manual #1 See species #: 58
• Wildly Successful Plants, A Handbook of North American Weeds, 1977 (ISBN# 0-02-528850-4) See page: 24, 141, 147
• Listed as a `Weed` by the Biota of North America Program, 2008 x
• Listed in the WSSA Composite List of Weeds X