Flower Color

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

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

• Axillary racemes
• Terminal raceme

Number of Petals

• 5 petals

Petal Separation

• United from 25% - 75% length
• United > 75% of length

Petal Tip

• Pointed
• Rounded

Flower Symmetry

• Flowers strongly irregular

Flower Length (Head length in the Asteraceae)

• 2.5 cm (1.0 inch)
• 3.0 cm (1.2 inches)
• 3.5 cm (1.4 inches)
• 4.0 cm (1.6 inches)

Flower Width (Head width in the Asteraceae)

• 1.0 cm (.40 inch)
• 1.5 cm (.60 inch)
• 2.0 cm (.80 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

• 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

• 5 mm (.20 inch)
• 6 mm (.24 inch)
• 7 mm (.28 inch)
• 8 mm (.32 inch)
• 9 mm (.36 inch)

Burs

• Fruit or seed NOT bur-like

Leaf Arrangement

• Alternate
• Opposite
• Opposite below, alternate above

Leaf Type

• Simple (including lobed leaves)

Stipules

• Lacking

Tendrils

• Tendrils absent

Venation

• Arcuate
• Palmate
• Parallel

Petiole (leaf stem) Blade Ratio

• Petiole absent (leaf sessile)

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)

• Cordate (heart)
• Lanceolate
• Obovate
• Ovate

Succulence

• Succulent
• Not succulent

Leaf or Leaflet Margin

• Entire

Leaf or Leaflet Blade Base

• Clasping
• Cordate
• Rounded

Leaf or Leaflet Tip

• Acuminate (attenuate)
• Acute

Leaf or Leaflet Blade Surface

• Glabrous (NO hairs)
• Glaucous

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)
• Erect, spherical (bushy)

Plant Height at Maturity

• 4 - 6 dm (1.3 - 2.0 feet)
• 6 - 8 dm (2.0 - 2.6 feet)
• 8 - 10 dm (2.6 - 3.3 feet)
• 1 - 1.5 meters (3.3 - 5.0 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 branched

Root or Vegetative Propagule

• Rhizomatous

US State

• Arkansas
• Connecticut
• Illinois
• Kansas
• Massachusetts
• Maine
• Michigan
• New Hampshire
• New Jersey
• New York
• Ohio
• Pennsylvania
• Wisconsin
• Indiana
• Rhode Island
• Vermont
• Arizona
• California
• Colorado
• Iowa
• Idaho
• Minnesota
• Montana
• North Dakota
• New Mexico
• Nevada
• Oklahoma
• Oregon
• South Dakota
• Utah
• Washington
• Wyoming
• Nebraska

Canadian Province or Territory

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

• The Biology of Canadian Weeds: Canadian Journal of Plant Science Vol:77Pg.483
• Common Weeds of the Canadian Prairies, 1963 (Cat# A53-1136-1) See page: 46
• Common Weeds of the United States, 1971 (ISBN 0-486-20504-5) See page: 326
• Field Guide To The Common Weeds Of Kansas, 1983 (ISBN 0-7006-0233-X) See page: 96
• Gilkey`s Weeds of the Pacific Northwest, 1980 (ISBN 0-88246-039-0) See page: 273
• Northwest Weeds, 1990 (ISBN 0-87842-249-8) See page: 107
• Ontario Weeds, 1992 Agdex 640, Publication #505 See page: 191
• Selected Weeds of Oregon, 1985 and 1989 Supplement (s) Oregon State Dept. of Agriculture, See page: 61
• South Dakota Weeds 2002 South Dakota Dept. of Ag. 523 E. Capitol, Foss Bldg. Pierre, South Dakota 57501 See page: 130
• Weeds and Poisonous Plants of Wyoming and Utah 1987 (ISBN 0-941570-06-1) See page: 124
• Weeds of California and other Western States, 2007 (ISBN 13: 978-1-879906-69-3) See Page: 1463
• Weeds of Canada, 1970 Canada Dept. of Ag., Pub. # 948, See page: 150
• Weeds of Colorado, 1990 Cooperative Extension, Colorado State Univ. Bulletin 521A, See page: 138
• Weeds of Eastern Washington and Adjacent Areas, 1972 (LOC 72-83635) See page: 244
• Weeds of Nebraska and the Great Plains, 1994 (ISBN 0939870-00-4) See page: 509
• Weeds of the Northern United States and Canada, 1964 Montgomery See page: 149
• Weeds of the Northern U.S, and Canada, 1999 Royer and Dickinson, (ISBN# 1-55105-221-0) See page: 136-37, 139
• Weeds of the West, 1992 (ISBN 0941570-13-4) See page: 546
• Weeds of the West, 2000 (ISBN 0941570-13-4) See page: 540
• Listed as a `Weed` by the Biota of North America Program, 2008 x
• Listed in the WSSA Composite List of Weeds X