Flower Color

• White

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

• Corymb

Number of Petals

• 3 petals
• 4 petals
• 5 petals
• 6 petals
• 7 petals
• 8 petals

Petal Separation

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

Petal Tip

• 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)

Flower Width (Head width in the Asteraceae)

• 7 mm (.28 inch)
• 8 mm (.32 inch)
• 9 mm (.36 inch)
• 1.0 cm (.40 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
• 2 mm (.08 inch)

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)
• 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

• 5 - 10 mm (.20 - .40 inch)
• 1 - 2 cm (.40 - .80 inch)
• 2 - 4 cm (.80 - 1.6 inches)

Leaf Shape (simple leaves only)

• Lanceolate
• Linear or filiform

Leaf or Leaflet Margin

• Entire
• Serrate

Leaf or Leaflet Blade Base

• Acuminate (attenuate)

Leaf or Leaflet Tip

• Acuminate (attenuate)
• Acute

Leaf or Leaflet Blade Surface

• Floccose
• Glabrous (NO hairs)
• Pubescent

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)

Plant Height at Maturity

• 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 leaves greatly reduced
• Stem uniformly leafy

Main Stem Branches

• Main stem unbranched
• Main stem branched

Root or Vegetative Propagule

• Rhizomatous

US State

• Connecticut
• Massachusetts
• Maine
• Michigan
• New Hampshire
• New Jersey
• New York
• Ohio
• Pennsylvania
• Wisconsin
• West Virginia
• Indiana
• Maryland
• Rhode Island
• Vermont
• Alaska
• Idaho
• Minnesota
• Montana
• Washington

Canadian Province or Territory

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

Other

• St. Pierre and Miquelon
• Labrador
• Greenland

• Weeds of the Northern United States and Canada, 1964 Montgomery See page: 167
• Listed as a `Weed` by the Biota of North America Program, 2008 X
• Listed in the WSSA Composite List of Weeds x
• Acmispon americanus var. americanus / Fabaceae / clover, Spanish
• California Growers Weed Identification Handbook, 1968 - 1998 University of California Publication # 4030-1, See page: 126
• Weeds of California and other Western States, 2007 (ISBN 13: 978-1-879906-69-3) See Page: 773
• Weeds of Nebraska and the Great Plains, 1994 (ISBN 0939870-00-4) See page: 305
• Listed as a `Weed` by the Biota of North America Program, 2008 x