Flower Color

• Yellow

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

• Head
• Solitary, terminal

Number of Petals

• 5 petals
• 7 petals
• 8 petals
• 9 petals

Petal Separation

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

Petal Tip

• Toothed

Flower Symmetry

• Flowers regular

Flower Length (Head length in the Asteraceae)

• 8 mm (.32 inch)
• 9 mm (.36 inch)
• 1.0 cm (.40 inch)
• 1.5 cm (.6 inch)

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

• sepals lacking
• more than 10 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)

• 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)
• 3 mm (.12 inch)

Fruit Width at Maturity

• 1 mm (.04 inch) or less
• 2 mm (.08 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)

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)

Leaf Width

• < 1 mm (< .04 inch)
• 1 - 5 mm (.04 - .20 inch)

Leaf Shape (simple leaves only)

• Linear or filiform

Leaf or Leaflet Margin

• Entire

Leaf or Leaflet Blade Base

• Clasping

Leaf or Leaflet Tip

• Acute
• Rounded (obtuse)

Leaf or Leaflet Blade Surface

• Glabrous (NO hairs)
• Glandular
• Punctate

Succulence

• Not succulent

Milky Juice

• Juice NOT milky (watery)

Woodiness

• Herbaceous

Spines or Thorns

• Spines or Thorns ABSENT

Aromatic (vegetative structures)

• Aromatic

Life Cycle

• Annual

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)
• 6 - 8 dm (2.0 - 2.6 feet)

Wind Dissemination

• Not wind disseminated

Moisture Regime

• Mesic

Chlorophyll

• Present

Stem Cross Section

• Round

Flowering Stem Leaves

• Stem uniformly leafy

Main Stem Branches

• Main stem branched

Root or Vegetative Propagule

• Tap Root

US State

• Alabama
• Arkansas
• Connecticut
• Florida
• Georgia
• Illinois
• Kansas
• Kentucky
• Louisiana
• Massachusetts
• Michigan
• Missouri
• Mississippi
• North Carolina
• Ohio
• Pennsylvania
• South Carolina
• Tennessee
• Texas
• Virginia
• Wisconsin
• Indiana
• Maryland
• California
• Iowa
• Oklahoma
• Nebraska

• Common Weeds of the United States, 1971 (ISBN 0-486-20504-5) See page: 416
• Common Weed Seedlings of the United States and Canada, 1978 Coop Ext. Univ. of Georgia, Athens, See page: 13
• Field Guide To The Common Weeds Of Kansas, 1983 (ISBN 0-7006-0233-X) See page: 119
• How to Know the Weeds, 1972, (ISBN# 0-697-04880-2) See page: 180
• Identifying Seedling and Mature Weeds (Southeastern US) 1980 North Carolina Agricultural Research Service, Bulletin #461 See page: 138
• Representative Missouri Weeds and Their Control, 1941 Univ. of Missouri Ag. Exp Station Bulletin #433, See page: 197
• Some Weedy Plants of North Carolina, 1955 North Carolina Ag. Ext. Circular # 390, See page: 55
• S.W.S.S. Weed ID Guide, 1993 Section Number and Five letter code: 13 HENAM
• Weed Seeds of the Great Plains, 1993 University of Kansas# 92-125-B ISBN# 0-7006-0651-3 See index #: 222
• Weeds, 1955 (1980) Walter Conrad Muenscher, ISBN# 0-8014-1266-8 See page: 471
• Weeds, A Golden Guide, 1972 ISBN#0-307-24353-2 See page: 138
• Weeds of Arkansas 1981 (MP 169-5M-3-81) See page: 15
• Weeds of Kentucky and Adjacent States, 1991 (ISBN 0-8131-1743-7) See page: 98
• Weeds of Nebraska and the Great Plains, 1994 (ISBN 0939870-00-4) See page: 143
• Weeds of Southern Turfgrasses, 1992 Univ. of Florida, Gainesville Publication # SP-79, See page: 102
• Weeds of the Midwestern United States & Central Canada, University of Georgia 2010, ISBN#0-8203-3506-1 See page: 100
• Weeds of the North Central States, 1981 Univ. of Illinois, Urbana - Champaign Bulletin # 772, See page: 214
• Weeds of the South, University of Georgia 2009, ISBN#0-8203-3046-9 See page: 82
• Weeds of the Southern United States, 1975, North Carolina Ag. Extension Circular #599 See page: 13
• Weeds of the United States and Their Control, Lorenzi 1987, ISBN# 0-442-25884-4 See page: 315
• Listed as a `Weed` by the Biota of North America Program, 2008 x
• Listed in the WSSA Composite List of Weeds X