Flower Color

• Yellow
• Blue
• Multi-colored

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

• Terminal spike

Number of Petals

• 4 petals
• 5 petals

Petal Separation

• United > 75% of length

Petal Tip

• Bilobed
• Rounded

Flower Symmetry

• Flowers slightly irregular
• Flowers strongly irregular

Flower Length (Head length in the Asteraceae)

• 1.0 cm (.40 inch)
• 1.5 cm (.6 inch)

Flower Width (Head width in the Asteraceae)

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

Number of Sepals

• 4 sepals
• 5 sepals

Sepal Separation

• Completely free to base

Sepal Tip

• Pointed

Flower Sex

• Bisexual (perfect)

Number of Styles

• 1 style

Number of Stamens

• 4 stamens

Stamens 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

• 2 carpels

Ovary Position

• Superior (hypogynous)

Fruit Type

• Capsule, 2-celled

Fruit Length at Maturity

• 6 mm (.24 inch)
• 7 mm (.28 inch)
• 8 mm (.32 inch)
• 9 mm (.36 inch)

Fruit Width at Maturity

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

Burs

• Fruit or seed NOT bur-like

Leaf Arrangement

• Alternate

Leaf Type

• Simple (including lobed leaves)

Stipules

• Lacking

Tendrils

• Tendrils absent

Petiole (leaf stem) Blade Ratio

• Petiole absent (leaf sessile)

Leaf Length (blade PLUS petiole)

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

Leaf Width

• 1 - 5 mm (.04 - .20 inch)
• 5 - 10 mm (.20 - .40 inch)

Leaf Shape (simple leaves only)

• Lanceolate

Succulence

• Succulent
• Not succulent

Leaf or Leaflet Margin

• Entire

Leaf or Leaflet Blade Base

• Truncate

Leaf or Leaflet Tip

• Acuminate (attenuate)
• Acute

Leaf or Leaflet Blade Surface

• Glabrous (NO hairs)
• Puberulent
• Pubescent

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)

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

• Absent

Stem Cross Section

• Round

Flowering Stem Leaves

• Stem leafless
• Stem leaves greatly reduced

Main Stem Branches

• Main stem unbranched

US State

• Delaware
• Florida
• Georgia
• North Carolina
• New Jersey
• New York
• Pennsylvania
• South Carolina
• Texas
• Virginia
• West Virginia
• Maryland
• Vermont
• Oregon
• Washington

Other

• District of Columbia

• Common Weeds of the United States, 1971 (ISBN 0-486-20504-5) See page: 344
• Gilkey`s Weeds of the Pacific Northwest, 1980 (ISBN 0-88246-039-0) See page: 275
• How to Know the Weeds, 1972, (ISBN# 0-697-04880-2) See page: 143
• Weeds, 1955 (1980) Walter Conrad Muenscher, ISBN# 0-8014-1266-8 See page: 406
• Listed as a `Weed` by the Biota of North America Program, 2008 x
• Listed in the WSSA Composite List of Weeds X