Asclepiadaceae (Milkweed family)

Broadleaf plant family

All members of this plant family are known as milkweeds. There are at least 15 species of milkweeds that occur in the state.

Cocklebur, common
Xanthium strumarium
 

Dandelion
Taraxacum officinale
 

Dock, prairie
Silphium terebinthinaceum
 

Eclipta
Eclipta prostrata
 

Galinsoga, hairy
Galinsoga ciliata
 

Goldenrod, Canada
Solidago canadensis
 

Goldenrod, tall
Solidago altissima
 

Groundsel, common
Senecio vulgaris
 

Horseweed
Conyza canadensis
 

Ironweed, tall
Vernonia altissima
 

Ironweed, western
Vernonia baldwinii
 

Lettuce, prickly
Lactuca serriola
 

Lettuce, tall
Lactuca canadensis
 

Milkweed, common
Asclepias syriaca
 

Milkweed, eastern whorled
Asclepias verticillata
 

Milkweed, green
Asclepias hirtella
 

Milkweed, honeyvine
Ampelamus albidus
 

Ragweed, common
Ambrosia artemisiifolia
 

Ragweed, giant
Ambrosia trifida
 

Ragweed, lanceleaf
Ambrosia bidentata
 

Rosinweed, cup
Silphium perfoliatum
 

Rosinweed, wholeleaf
Silphium integrifolium
 

Salsify, western
Tragopogon dubius
 

Snakeroot, white
Eupatorium rugosum
 

Sowthistle, annual
Sonchus oleraceus
 

Sowthistle, spiny
Sonchus asper
 

Spanishneedles
Bidens bipinnata
 

Sunflower, common
Helianthus annuus
 

Thistle, bull
Cirsium vulgare
 

Thistle, Canada
Cirsium arvense
 

Thistle, field
Cirsium discolor
 

Thistle, musk
Carduus nutans
 

Thistle, Scotch
Onopordum acanthium
 

Thistle, tall
Cirsium altissimum
 

For an idea of relative seed size, each photo contains a millimeter ruler. The distance between increments is 1 mm.