Achillea (yarrow)

Ageratina (snakeroot)

Ambrosia (ragweed)

Anaphalis (everlasting)

Antennaria (pussytoes)

Anthemis (chamomile)

Arctium (burdock)

Artemisia (mugwort)

Bellis (lawn daisy)

Bidens (sticktight)

Calendula (pot-marigold)

Centaurea (knapweed)

Cichorium (chicory)

Cirsium (thistle)

Conoclinium (mistflower)

Coreopsis (tickseed)

Doellingeria (white aster)

Echinacea (purple coneflower)

Eclipta (false daisy)

Erechtites (fireweed)

Erigeron (fleabane)

Eupatorium (thoroughwort)

Thoroughworts are perennial herbs with opposite …

Eurybia (wood aster)

Euthamia (grassleaf goldenrod)

Eutrochium (Joe-Pye-weed)

Gaillardia (blanket-flower)

Galinsoga (quickweed)

Helenium (sneezeweed)

Helianthus (sunflower)

Heliopsis (sunflower-everlasting)

Hieracium (hawkweed)

Hypochaeris (cat's-ear)

Ionactis (stiff aster)

Lactuca (lettuce)

Lapsana (nipplewort)

Leucanthemum (daisy)

Liatris (blazingstar)

Marshallia (barbara's buttons)

Matricaria (mayweed)

Nabalus (rattlesnake-root)

Oclemena (nodding-aster)

Packera (ragwort)

Pilosella (hawkweed)

Pseudognaphalium (rabbit-tobacco)

Rudbeckia (coneflower)

Scorzoneroides (hawkbit)

Senecio (ragwort)

Silphium (rosin-weed)

Solidago (goldenrod)

The genus name Solidago is derived from the Latin …

Sonchus (sowthistle)

Symphyotrichum (American aster)

Tanacetum (tansy)

Taraxacum (dandelion)

Tragopogon (goat's-beard)

Tussilago (coltsfoot)

Verbesina (crownbeard)

Vernonia (ironweed)

Xanthium (cocklebur)