Flower Color

• Yellow

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

• Corymb
• Cyme (simple or branched)

Number of Petals

• 4 petals
• 5 petals
• 6 petals

Petal Separation

• Completely free to base

Petal Tip

• Bilobed
• Rounded
• Square

Flower Symmetry

• Flowers regular

Flower Length (Head length in the Asteraceae)

• 3.0 cm (1.2 inches)
• 3.5 cm (1.4 inches)
• 4.0 cm (1.6 inches)
• 4.5 cm (1.8 inches)
• 5.0 cm (2.0 inches) or more

Flower Width (Head width in the Asteraceae)

• > 5.0 cm (> 2.0 inches)

Number of Sepals

• 2 sepals
• 3 sepals

Sepal Separation

• Completely free to base

Sepal Tip

• Pointed
• Rounded

Flower Sex

• Bisexual (perfect)

Number of Styles

• 1 style

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 united (or one)

Number of Carpels

• 3 carpels
• 4 carpels
• 5 carpels
• 6 - 9 carpels

Ovary Position

• Superior (hypogynous)

Fruit Type

• Capsule, 3-celled
• Capsule, > 3-celled

Fruit Length at Maturity

• 2.0 cm (.80 inch)
• 2.5 cm (1.0 inch)
• 3.0 cm (1.2 inches)
• 3.5 cm (1.4 inches)
• 4.0 cm (1.6 inches)
• 4.5 cm (1.8 inches)

Fruit Width at Maturity

• 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)

Burs

• Fruit or seed NOT bur-like
• Fruit or seed 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)
• Petiole < 25% total length

Leaf Length (blade PLUS petiole)

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

Leaf Width

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

Leaf Shape (simple leaves only)

• Lanceolate
• Obovate
• Pinnately lobed

Leaf or Leaflet Margin

• Dentate
• Lobed
• Undulate (sinuate, repand)

Leaf or Leaflet Blade Base

• Clasping

Leaf or Leaflet Tip

• Acuminate (attenuate)
• Acute
• Aristate

Leaf or Leaflet Blade Surface

• Glabrous (NO hairs)
• Glaucous

Succulence

• Not succulent

Milky Juice

• Juice milky

Woodiness

• Herbaceous

Spines or Thorns

• Spines on leaves or stems
• Spines on flowers\fruits AND leaves\stems

Aromatic (vegetative structures)

• Not aromatic

Life Cycle

• Annual

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

• Not wind disseminated

Moisture Regime

• Mesic
• Arid

Chlorophyll

• Present

Stem Cross Section

• Round

Flowering Stem Leaves

• Stem uniformly leafy

Main Stem Branches

• Main stem unbranched
• Main stem branched

Root or Vegetative Propagule

• Tap Root

US State

• Alabama
• Arkansas
• Connecticut
• Delaware
• Florida
• Georgia
• Illinois
• Kansas
• Louisiana
• Massachusetts
• Michigan
• Missouri
• Mississippi
• North Carolina
• New Jersey
• New York
• Ohio
• Pennsylvania
• South Carolina
• Tennessee
• Texas
• Virginia
• Wisconsin
• Hawaii
• Indiana
• Maryland
• Vermont
• Iowa
• Nebraska

Canadian Province or Territory

• British Columbia
• Ontario
• Manitoba

Other

• Puerto Rico
• Virgin Islands
• District of Columbia

• How to Know the Weeds, 1972, (ISBN# 0-697-04880-2) See page: 80
• More Turfgrass and Related Weeds: Beyond the Color Atlas, 2011 Clemson University Publishing ISBN# 978-0-9798777-5-9 See Page: 301-302
• S.W.S.S. Weed ID Guide, 1993 Section Number and Five letter code: 11 ARGME
• Weeds, 1955 (1980) Walter Conrad Muenscher, ISBN# 0-8014-1266-8 See page: 226
• Weeds, A Golden Guide, 1972 ISBN#0-307-24353-2 See page: 58
• Weeds of the South, University of Georgia 2009, ISBN#0-8203-3046-9 See page: 246
• Listed as a `Weed` by the Biota of North America Program, 2008 X
• Listed in the WSSA Composite List of Weeds X