Flower Color

• Red (or pink)
• White

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

• Cyme (simple or branched)
• Solitary, axillary

Number of Petals

• 0 (no petals)

Flower Symmetry

• Flowers regular

Flower Length (Head length in the Asteraceae)

• < 1 mm (< .04 inch)
• 1 mm (.04 inch)
• 2 mm (.08 inch)

Flower Width (Head width in the Asteraceae)

• < 1 mm (< .04 inch)
• 1 mm (.04 inch)
• 2 mm (.08 inch)

Number of Sepals

• sepals lacking

Flower Sex

• Unisexual (monoecious or dioecious)
• Bisexual (perfect)

Number of Styles

• Styles lacking (male flowers only)
• 3 styles

Number of Stamens

• stamens lacking (female flowers only)
• 1 stamen

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

• 0 (male flowers only or plants producing spores)
• 3 carpels

Ovary Position

• Superior (hypogynous)

Fruit Type

• Capsule, 3-celled

Fruit Length at Maturity

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

Fruit Width at Maturity

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

Burs

• Fruit or seed NOT bur-like

Leaf Arrangement

• Opposite

Leaf Type

• Simple (including lobed leaves)

Stipules

• Foliaceous < 2 mm (< .08 inch) long
• Foliaceous 2-4 mm (.08 - .16 in) long

Tendrils

• Tendrils absent

Venation

• Palmate
• Pinnate

Petiole (leaf stem) Blade Ratio

• Petiole absent (leaf sessile)
• Petiole < 25% total length

Leaf Length (blade PLUS petiole)

• < 5 mm (< .20 inch)
• 5 - 10 mm (.20 - .40 inch)
• 1 - 2 cm (.40 - .80 inch)

Leaf Width

• 1 - 5 mm (.04 - .20 inch)
• 5 - 10 mm (.20 - .40 inch)
• 1 - 2 cm (.40 - .80 inch)

Leaf Shape (simple leaves only)

• Oblong
• Obovate
• Ovate

Succulence

• Succulent
• Not succulent

Leaf or Leaflet Margin

• Entire
• Serrate

Leaf or Leaflet Blade Base

• Acute (cuneate)
• Rounded

Leaf or Leaflet Tip

• Acute
• Rounded (obtuse)

Leaf or Leaflet Blade Surface

• Glabrous (NO hairs)

Milky Juice

• Juice milky

Woodiness

• Herbaceous

Spines or Thorns

• Spines or Thorns ABSENT

Aromatic (vegetative structures)

• Not aromatic

Life Cycle

• Annual

Growth Habit (while flowering)

• Prostrate
• Spreading ascending

Plant Height at Maturity

• < 1 cm (< .40 inch)
• 1 - 5 cm (.40 - 2.0 inches)
• 5 - 10 cm (2.0 - 4.0 inches)
• 1 - 2 dm (4.0 - 8.0 inches)
• 2 - 4 dm (8.0 - 16.0 inches)

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

• Tap Root

US State

• Delaware
• Florida
• Georgia
• Illinois
• Kansas
• Kentucky
• Louisiana
• Michigan
• Missouri
• New Hampshire
• New York
• Pennsylvania
• Texas
• Wisconsin
• 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
• Ontario
• Quebec
• Alberta
• Manitoba
• Saskatchewan

• Common Weeds of the Canadian Prairies, 1963 (Cat# A53-1136-1) See page: 38
• Gilkey`s Weeds of the Pacific Northwest, 1980 (ISBN 0-88246-039-0) See page: 181
• Ontario Weeds, 1992 Agdex 640, Publication #505 See page: 129
• South Dakota Weeds, 1967 South Dakota State University, See page: 115
• Weeds of California, 1970, State of California Publications and Documents. See page: 285, 286
• Weeds of Canada, 1970 Canada Dept. of Ag., Pub. # 948, See page: 114
• Weeds of Colorado, 1990 Cooperative Extension, Colorado State Univ. Bulletin 521A, See page: 101
• Weeds of Nebraska and the Great Plains, 1994 (ISBN 0939870-00-4) See page: 295
• Weeds of the Northern U.S, and Canada, 1999 Royer and Dickinson, (ISBN# 1-55105-221-0) See page: 371
• Weeds of the West, 1992 (ISBN 0941570-13-4) See page: 313
• Weeds of the West, 2000 (ISBN 0941570-13-4) See page: 309
• Weeds of Utah, 1971 UAES Special Report 21, See page: 56
• Listed as a `Weed` by the Biota of North America Program, 2008 X