Annual; Stems are light-green and have stout, white hairs or bristles. Leaves are alternate, lanceolate and hairy. Flower head is curled and unrolls as the flower opend. Purple to blueish in color, trumpet shaped and attached to one side of the stem.

Biennial; bright green and shiny fern-like leaves. Stout, hollow, rigid, purple-spotted stems. Flowers in numerous small, umbrella-shaped clusters of tiny white flowers.

Perennial; course, unpleasant-scented green foliage. Coarse red or purple tinged stems. Flowers are erect to drooping clusters and lack petals. Berries are a glossy purple-black color at maturity. Large fleshy crown and taproot.

Annual; stems are hollow and soft green or reddish in color. Oblong, egg-shaped, opposite or whorled leaves with serrated edges. White, pink or purple flowers resemble British policeman’s helmet. Crushed foliage has a strong musty smell.

Erect annual or biennial plant with long taproot and milky sap. Leaves have short spines along the bottom of the central vein. Leaves can be entire or pinnate, with prickly margins. Flower is small, pale yellow and ligulate. Seeds similar to dandelion.

Perennial; stiff 4 sided stems are simple or branched. Leaves are opposite or whorled and have smooth edges. Small magenta flowers with 5-7 petals on tall showy spikes.

Perennial; stems have triangular cross sections. Long dark green leaves are mostly basal, glossy, and creased lengthwise.

Annual to perennial; stems are hairless and grooved. Sharp yellow spines can be up to 1” in length. Flowers are pink to lavender purple up to 1” long.

Ground creeping annual with hairy foliage and small yellow and purple two-lipped flowers. Often grows in mat-like form, but may climb up other plants.

Annual; green stems are somewhat translucent and have swollen or dark nodes. Orange, three-lobed petals with similar colored hooked conical spurs at the back of each flower.

Biennial or short-lived perennial; multiple stems with several coming from each rosette. Leaves are oblong and wider at the tip. Leaves and stems are blue-gray in color. Flowers are purple, tips of flower heads are urn-shaped. Bracts are usually black, thus the name “spotted”.

Annual; stems are branching, green to rust-colored and woody at the base. Yellow flowers with black dots on the edged of the petals. Opposite leaves with scattered translucent dots that make the leaf look perforated when held up to light.

Perennial; one to several stems per plant. Numerous leaves on the stems, 5-7 leaflets with toothed edges. Stems and leaves are covered with stiff hairs. Pale yellow flowers with 5 heart shaped petals. The native look-alike, slender cinguefoil (Potentilla gracillis), has white woolly hair on the undersurface of the leaves; the invasive plant does not have the woolly hairs.