Ambrosia artemisiifolia

Common ragweed

highly dissected leaves

Ambrosia trifida

Giant ragweed

similar leaves to golden glow

opposite leaves

imperfect flowers

Aster novae-angliae

New England aster

purple flowers

found in disturbed prairies

clasping leaves with small oracles (lobes)

pubescent leaves; lanceolate or oblong

Aster schreberi

Smooth forked aster

two different types of leaves

probably won't see in field

Echinacea purpurea

Broad-leaved purple coneflower

alternate leaves

Coreopsis tripteris

Tall coreopsis

opposite leaves, highly lobed

3-5 narrow leaflets toward the base of the plant

hairless leaves with smooth margins

Doellingeria umbellata

Flat-top aster

not very common in area

probably won't be seen in field

top may not appear very flat-topped

Eupatoriadelphus maculatus

Spotted joe pye weed

whorled leaves

'maculatus' typically means spotted

often has dark purple spots on stems

dull pink flowers

Euthamia graminifolia

Grass-leaved goldenrod

corumbose inflorescense

parallel veins

Helianthus strumosis

Pale-leaved sunflower

rough, opposite, petiolate leaves

involucre is sharp

Heliopsis helianthoides

False sunflower

involucre much more blunt-tipped than sunflower

leaves smoother than helianthus

stems have scattered white hairs

relatively broad and distinctively veined leaves

Rudbeckia hirta

Black-eyed susan

Stems have long white hairs

lanceolate hairy leaves

Rudbeckia laciniata

Wild golden glow

distinct, highly lobed leaves

Rudbeckia triloba

Brown-eyed susan

lower leaves divided into three lobes

Silphium integrifolium

Rosin weed

leaves opposite, not quite perfoliate

Silphium perfoliatum

Cup plant

perfoliate leaves, opposite

Solidago canadensis

Canada goldenrod

has both ray and disk flowers

alternate lanceolate leaves;

usually have small teeth along margins or are smooth

3 prominant veins visible on each leaf

Verbesina alternifolia

Wingstem

simple leaves; alternate and sessile

winged stem

reflexed ray flowers