Flower Color

• Orange
• Yellow-orange
• Yellow

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)

• 4 mm (.16 inch)
• 5 mm (.20 inch)
• 6 mm (.24 inch)
• 7 mm (.28 inch)

Flower Width (Head width in the Asteraceae)

• 1 mm (.04 inch)
• 2 mm (.08 inch)
• 3 mm (.12 inch)

Number of Sepals

• 5 sepals

Sepal Separation

• Completely free to base
• United at base < 25% length

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

• 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

Venation

• Arcuate
• Parallel

Petiole (leaf stem) Blade Ratio

• Petiole absent (leaf sessile)

Leaf Length (blade PLUS petiole)

• 1 - 2 cm (.40 - .80 inch)
• 2 - 4 cm (.80 - 1.60 inches)
• 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)

Leaf Shape (simple leaves only)

• Lanceolate
• Linear or filiform
• Oblanceolate

Leaf or Leaflet Margin

• Entire

Leaf or Leaflet Blade Base

• Acuminate (attenuate)
• Clasping
• Rounded

Leaf or Leaflet Tip

• Acute

Leaf or Leaflet Blade Surface

• Antrorsely pubescent
• Hirsute
• Hispid or setose
• 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)

• Erect, columnar (narrow)
• 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)
• 6 - 8 dm (2.0 - 2.6 feet)

Wind Dissemination

• Not wind disseminated

Moisture Regime

• Mesic
• Arid

Chlorophyll

• Present

Stem Cross Section

• Round

Flowering Stem Leaves

• Stem leaves greatly reduced
• Stem uniformly leafy

Main Stem Branches

• Main stem branched

Root or Vegetative Propagule

• Tap Root

US State

• Connecticut
• Illinois
• Massachusetts
• Maine
• Missouri
• North Carolina
• New Hampshire
• New York
• Pennsylvania
• South Carolina
• Texas
• Virginia
• Hawaii
• Alaska
• Arizona
• California
• Colorado
• Idaho
• Montana
• North Dakota
• Nevada
• Oregon
• Utah
• Washington
• Wyoming
• Nebraska

Canadian Province or Territory

• British Columbia
• Alberta
• Manitoba
• Saskatchewan
• Yukon

• An Illustrated Guide To Arizona Weeds, 1972 (ISBN 0-8165-0288-9) 338 pages. See page: 242
• California Growers Weed Identification Handbook, 1968 - 1998 University of California Publication # 4030-1, See page: 6
• Common Weed Seedlings of the United States and Canada, 1978 Coop Ext. Univ. of Georgia, Athens, See page: 7
• Garden Weeds of Southern California, 1981, See page: 86
• Gilkey`s Weeds of the Pacific Northwest, 1980 (ISBN 0-88246-039-0) See page: 231, 232
• How to Know the Weeds, 1972, (ISBN# 0-697-04880-2) See page: 121
• Selected Weeds of Oregon, 1985 and 1989 Supplement (s) Oregon State Dept. of Agriculture, See page: 55
• S.W.S.S. Weed ID Guide, 1993 Section Number and Five letter code: 11 AMSIN
• Weeds, 1955 (1980) Walter Conrad Muenscher, ISBN# 0-8014-1266-8 See page: 356, 362
• Weeds, A Golden Guide, 1972 ISBN#0-307-24353-2 See page: 97
• Weeds of California, 1970, State of California Publications and Documents. See page: 356
• Weeds of California and other Western States, 2007 (ISBN 13: 978-1-879906-69-3) See Page: 426
• Weeds of Eastern Washington and Adjacent Areas, 1972 (LOC 72-83635) See page: 220
• Weeds of the West, 1992 (ISBN 0941570-13-4) See page: 198
• Weeds of the West, 2000 (ISBN 0941570-13-4) See page: 198
• Weeds of Utah, 1971 UAES Special Report 21, See page: 69
• Listed as a `Weed` by the Biota of North America Program, 2008 X
• Listed in the WSSA Composite List of Weeds X