Flower Color

• Orange

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

• Solitary, axillary

Number of Petals

• 5 petals

Petal Separation

• Completely free to base

Petal Tip

• Erose
• Pointed
• Rounded

Flower Symmetry

• Flowers regular

Flower Length (Head length in the Asteraceae)

• 1.5 cm (.6 inch)
• 2.0 cm (.8 inch)
• 2.5 cm (1.0 inch)
• 3.0 cm (1.2 inches)
• 3.5 cm (1.4 inches)

Flower Width (Head width in the Asteraceae)

• 1.0 cm (.40 inch)
• 1.5 cm (.60 inch)
• 2.0 cm (.80 inch)
• 2.5 cm (1.0 inch)
• 3.0 cm (1.2 inches)
• 3.5 cm (1.4 inches)
• 4.0 cm (1.6 inches)
• 4.5 cm (1.8 inches)
• 5.0 cm (2.0 inches)
• > 5.0 cm (> 2.0 inches)

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

• 10 stamens

Stamens Attached to the Petals

• Stamens NOT 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

• 10 carpels
• >10 carpels

Ovary Position

• Superior (hypogynous)

Fruit Type

• Capsule, > 3-celled
• Schizocarp

Fruit Length at Maturity

• 2 mm (.08 inch)
• 3 mm (.12 inch)
• 4 mm (.16 inch)
• 5 mm (.20 inch)
• 6 mm (.24 inch)
• 7 mm (.28 inch)
• 8 mm (.32 inch)
• 9 mm (.36 inch)
• 1.0 cm (.40 inch)

Fruit Width at Maturity

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

Burs

• Fruit or seed NOT bur-like
• Fruit or seed bur-like

Leaf Arrangement

• Opposite

Leaf Type

• Compound even pinnate < 9 leaflets
• Compound even pinnate > 9 leaflets

Stipules

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

Tendrils

• Tendrils absent

Venation

• Pinnate

Petiole (leaf stem) Blade Ratio

• Petiole < 25% total length

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 - 2 cm (.40 - .80 inch)
• 2 - 4 cm (.80 - 1.6 inches)
• 4 - 10 cm (1.6 - 4.0 inches)

Leaf or Leaflet Margin

• Entire
• Ciliate

Leaf or Leaflet Blade Base

• Oblique
• Rounded

Leaf or Leaflet Tip

• Acute
• Rounded (obtuse)

Leaf or Leaflet Blade Surface

• Glabrous (NO hairs)
• Hirsute

Succulence

• Not succulent

Milky Juice

• Juice NOT milky (watery)

Woodiness

• Herbaceous

Spines or Thorns

• Spines or Thorns ABSENT
• Spines on flowers or fruits only

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)

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 unbranched
• Main stem branched

Root or Vegetative Propagule

• Tap Root

US State

• Texas
• Arizona
• California
• New Mexico

• An Illustrated Guide To Arizona Weeds, 1972 (ISBN 0-8165-0288-9) 338 pages. See page: 196
• Listed as a `Weed` by the Biota of North America Program, 2008 x