Flower Color

• Red (or pink)
• Red-orange
• Green

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

• Axillary cluster
• Axillary racemes
• Axillary spikes
• Panicle
• Terminal raceme
• Terminal spike

Number of Petals

• 0 (no petals)
• 3 petals
• 6 petals

Petal Separation

• Completely free to base

Petal Tip

• Rounded

Flower Symmetry

• Flowers regular

Flower Length (Head length in the Asteraceae)

• 3 mm (.12 inch)
• 4 mm (.16 inch)
• 5 mm (.20 inch)
• 6 mm (.24 inch)

Flower Width (Head width in the Asteraceae)

• 2 mm (.08 inch)
• 3 mm (.12 inch)
• 4 mm (.16 inch)

Number of Sepals

• sepals lacking
• 3 sepals
• 6 sepals

Sepal Separation

• Completely free to base

Sepal Tip

• Pointed
• Rounded

Flower Sex

• Bisexual (perfect)

Number of Styles

• 3 styles

Number of Stamens

• 6 stamens

Stamens Attached to the Petals

• Stamens NOT attached to the petals

Stamens Connate (united)

• Filaments or anthers NOT united

Carpel Separation

• Carpels united (or one)

Number of Carpels

• 3 carpels

Ovary Position

• Superior (hypogynous)

Fruit Type

• Achene

Fruit Length at Maturity

• 2 mm (.08 inch)
• 3 mm (.12 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

• Membranous, entire

Tendrils

• Tendrils absent

Venation

• Pinnate

Petiole (leaf stem) Blade Ratio

• Petiole < 25% total length
• Petiole 25% - 75% total length

Leaf Length (blade PLUS petiole)

• 4 - 10 cm (1.60 - 4.0 inches)
• 1 - 2 dm (4.0 - 8.0 inches)
• 2 - 4 dm (8.0 - 16.0 inches)

Leaf Width

• 4 - 10 cm (1.6 - 4.0 inches)
• 1 - 2 dm (4.0 - 8.0 inches)

Leaf Shape (simple leaves only)

• Cordate (heart)
• Oblong
• Ovate

Leaf or Leaflet Margin

• Entire
• Undulate (sinuate, repand)

Leaf or Leaflet Blade Base

• Auriculate
• Cordate
• Truncate

Leaf or Leaflet Tip

• Acute
• Rounded (obtuse)

Leaf or Leaflet Blade Surface

• Glabrous (NO hairs)
• Puberulent
• Scabrous (like sand paper)

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

• 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

• Seasonally saturated
• Mesic

Chlorophyll

• Present

Stem Cross Section

• Round

Flowering Stem Leaves

• Stem leaves greatly reduced
• Stem uniformly leafy

Main Stem Branches

• Main stem unbranched

Root or Vegetative Propagule

• Tap Root

US State

• Alabama
• Arkansas
• Connecticut
• Delaware
• Florida
• Georgia
• Illinois
• Kansas
• Kentucky
• Louisiana
• Massachusetts
• Maine
• Michigan
• Missouri
• Mississippi
• North Carolina
• New Hampshire
• New Jersey
• New York
• Ohio
• Pennsylvania
• South Carolina
• Tennessee
• Texas
• Virginia
• Wisconsin
• West Virginia
• Hawaii
• Indiana
• Maryland
• Rhode Island
• Vermont
• Alaska
• Arizona
• California
• Colorado
• Iowa
• Idaho
• Minnesota
• Montana
• New Mexico
• Oklahoma
• Oregon
• South Dakota
• Utah
• Washington
• Nebraska

Canadian Province or Territory

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

Other

• District of Columbia
• St. Pierre and Miquelon
• Greenland

• Aquatic and Riparian Plants of the West, 2003 (ISBN# 1-879906-59-7) See page: 329
• Gilkey`s Weeds of the Pacific Northwest, 1980 (ISBN 0-88246-039-0) See page: 71
• Identifying Seedling and Mature Weeds (Southeastern US) 1980 North Carolina Agricultural Research Service, Bulletin #461 See page: 156
• Manual of Ohio Weeds, 1931 Ohio Ag. Exp. Station Bull. # 475, See page: 57
• Northwest Weeds, 1990 (ISBN 0-87842-249-8) See page: 27
• Ontario Weeds, 1992 Agdex 640, Publication #505 See page: 52
• Representative Missouri Weeds and Their Control, 1941 Univ. of Missouri Ag. Exp Station Bulletin #433, See page: 75
• Some Weedy Plants of North Carolina, 1955 North Carolina Ag. Ext. Circular # 390, See page: 19
• S.W.S.S. Weed ID Guide, 1993 Section Number and Five letter code: 6 RUMOB
• Weeds, 1955 (1980) Walter Conrad Muenscher, ISBN# 0-8014-1266-8 See page: 177, 179
• Weeds, A Golden Guide, 1972 ISBN#0-307-24353-2 See page: 37-39
• Weeds of Arkansas 1981 (MP 169-5M-3-81) See page: 53
• Weeds of California, 1970, State of California Publications and Documents. See page: 140, 141
• Weeds of California and other Western States, 2007 (ISBN 13: 978-1-879906-69-3) See Page: 1351
• Weeds of Canada, 1970 Canada Dept. of Ag., Pub. # 948, See page: 35
• Weeds of Colorado, 1990 Cooperative Extension, Colorado State Univ. Bulletin 521A, See page: 54
• Weeds of Nebraska and the Great Plains, 1994 (ISBN 0939870-00-4) See page: 491
• Weeds of Southern Turfgrasses, 1992 Univ. of Florida, Gainesville Publication # SP-79, See page: 166
• Weeds of the Midwestern United States & Central Canada, University of Georgia 2010, ISBN#0-8203-3506-1 See page: 268
• Weeds of the North Central States, 1981 Univ. of Illinois, Urbana - Champaign Bulletin # 772, See page: 55
• Weeds of the Northeast, 1956, Univ. of Delaware Field Manual #1 See species #: 193
• Weeds of the Northeast, 1997 Cornell University ISBN# 0-8014-8334-4 See page: 114, 286
• Weeds of the Northern United States and Canada, 1964 Montgomery See page: 33
• Weeds of the South, University of Georgia 2009, ISBN#0-8203-3046-9 See page: 264
• Weeds of the Southern United States, 1975, North Carolina Ag. Extension Circular #599 See page: 37
• Weeds of the United States and Their Control, Lorenzi 1987, ISBN# 0-442-25884-4 See page: 113
• Weeds of the West, 1992 (ISBN 0941570-13-4) See page: 515
• Weeds of the West, 2000 (ISBN 0941570-13-4) See page: 511
• Weeds of Utah, 1971 UAES Special Report 21, See page: 27
• Listed as a `Weed` by the Biota of North America Program, 2008 x
• Listed in the WSSA Composite List of Weeds X