Flower Color

• Orange
• Yellow-orange
• Yellow
• White
• Multi-colored

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

• Head
• Panicle
• Solitary, axillary
• Solitary, terminal

Number of Petals

• 5 petals
• 10 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)

• 4 mm (.16 inch)
• 5 mm (.20 inch)
• 6 mm (.24 inch)
• 7 mm (.28 inch)
• 8 mm (.32 inch)

Flower Width (Head width in the Asteraceae)

• 1.0 cm (.40 inch)
• 1.5 cm (.60 inch)
• 2.0 cm (.80 inch)
• 2.5 cm (1.0 inch)
• 3.0 cm (1.2 inches)
• 3.5 cm (1.4 inches)

Number of Sepals

• sepals lacking
• more than 10 sepals

Sepal Separation

• Completely free to base

Sepal Tip

• 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

• 2 mm (.08 inch)
• 3 mm (.12 inch)
• 4 mm (.16 inch)

Fruit Width at Maturity

• 1 mm (.04 inch) or less

Burs

• Fruit or seed NOT bur-like

Leaf Arrangement

• Alternate

Leaf Type

• Pinnately dissected

Stipules

• Lacking

Tendrils

• Tendrils absent

Venation

• Pinnate

Petiole (leaf stem) Blade Ratio

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

Leaf Length (blade PLUS petiole)

• 1 - 2 cm (.40 - .80 inch)
• 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 or Leaflet Margin

• Parted

Leaf or Leaflet Blade Base

• Acute (cuneate)
• Acuminate (attenuate)

Leaf or Leaflet Tip

• Acuminate (attenuate)
• Acute

Leaf or Leaflet Blade Surface

• Glabrous (NO hairs)

Succulence

• Not succulent

Milky Juice

• Juice NOT milky (watery)

Woodiness

• Herbaceous

Spines or Thorns

• Spines or Thorns ABSENT

Aromatic (vegetative structures)

• Aromatic

Life Cycle

• Annual

Growth Habit (while flowering)

• Spreading ascending
• Erect, columnar (narrow)
• 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

• 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

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

Canadian Province or Territory

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

Other

• District of Columbia
• Greenland

• Gilkey`s Weeds of the Pacific Northwest, 1980 (ISBN 0-88246-039-0) See page: 351
• How to Know the Weeds, 1972, (ISBN# 0-697-04880-2) See page: 185
• Manual of Ohio Weeds, 1931 Ohio Ag. Exp. Station Bull. # 475, See page: 102
• Ontario Weeds, 1992 Agdex 640, Publication #505 See page: 217
• Representative Missouri Weeds and Their Control, 1941 Univ. of Missouri Ag. Exp Station Bulletin #433, See page: 179
• Weeds, 1955 (1980) Walter Conrad Muenscher, ISBN# 0-8014-1266-8 See page: 426, 427
• Weeds of California and other Western States, 2007 (ISBN 13: 978-1-879906-69-3) See Page: 191
• Weeds of Canada, 1970 Canada Dept. of Ag., Pub. # 948, See page: 174
• Weeds of the Northeast, 1956, Univ. of Delaware Field Manual #1 See species #: 322
• Weeds of the Northeast, 1997 Cornell University ISBN# 0-8014-8334-4 See page: 106,112,128
• Weeds of the Northern United States and Canada, 1964 Montgomery See page: 169
• Weeds of the United States and Their Control, Lorenzi 1987, ISBN# 0-442-25884-4 See page: 293
• Listed as a `Weed` by the Biota of North America Program, 2008 X
• Listed in the WSSA Composite List of Weeds X