Flower Color

• Blue
• White
• Multi-colored

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

• Scorpioid

Number of Petals

• 5 petals

Petal Separation

• United > 75% of length

Petal Tip

• Rounded

Flower Symmetry

• Flowers regular
• Flowers slightly irregular

Flower Length (Head length in the Asteraceae)

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

Flower Width (Head width in the Asteraceae)

• 4 mm (.16 inch)
• 5 mm (.20 inch)
• 6 mm (.24 inch)

Number of Sepals

• 5 sepals

Sepal Separation

• Completely free to base

Sepal Tip

• Pointed

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)

• Filaments or anthers NOT united

Carpel Separation

• Carpels united (or one)

Number of Carpels

• 2 carpels
• 4 carpels

Ovary Position

• Superior (hypogynous)

Fruit Type

• Nutlets, 4

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
• 2 mm (.08 inch)
• 3 mm (.12 inch)

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)
• 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

• 1 - 2 cm (.40 - .80 inch)
• 2 - 4 cm (.80 - 1.6 inches)

Leaf Shape (simple leaves only)

• Lanceolate
• Oblanceolate
• Oblong

Leaf or Leaflet Margin

• Dentate
• Entire
• Undulate (sinuate, repand)

Leaf or Leaflet Blade Base

• Acuminate (attenuate)
• Truncate

Leaf or Leaflet Tip

• Acute
• Rounded (obtuse)

Leaf or Leaflet Blade Surface

• Hispid or setose
• Scabrous (like sand paper)
• Spiny or prickly

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

• Annual

Growth Habit (while flowering)

• Spreading ascending
• 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

• Ridged
• Round

Flowering Stem Leaves

• Stem uniformly leafy

Main Stem Branches

• Main stem branched

Root or Vegetative Propagule

• Tap Root

US State

• Connecticut
• Massachusetts
• Maine
• North Carolina
• New Hampshire
• New Jersey
• New York
• Ohio
• Pennsylvania
• Tennessee
• Virginia
• Wisconsin
• Maryland
• Rhode Island
• California
• Idaho
• Minnesota
• Montana
• North Dakota
• Oregon
• South Dakota
• Washington
• Wyoming

Canadian Province or Territory

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

Other

• District of Columbia

• Ontario Weeds, 1992 Agdex 640, Publication #505 See page: 169
• Weeds, 1955 (1980) Walter Conrad Muenscher, ISBN# 0-8014-1266-8 See page: 364
• Weeds of California, 1970, State of California Publications and Documents. See page: 359
• Listed as a `Weed` by the Biota of North America Program, 2008 X
• Listed in the WSSA Composite List of Weeds X