Key

Taxon:
Display:
Plant
  habit
   trees
   vines / lianas
   herbaceous
   grass-like
  special groups
   composites
   legumes
   spurges
   dicots
   monocots
  longevity
   annual or biennial
   perennial
  sap
   latex absent (sap clear)
   latex present
Leaves
  arrangement/phyllotaxy
   basal
   alternate
   opposite
  blade division
   all simple
   deeply lobed or divided
   some or all fully compound
  leaf attachment
   sessile or nearly so
   leaf stalk (petiole) clearly present
   winged petiolate
   sheathing
Inflorescence
  flowering season - upper Midwest
   spring
   summer
   fall
  plant sexuality
   monoecious
   dioecious
   bisexual flowers
Flower
  principal flower color
   white or cream
   purple
   green
   yellow
   orange
   red
   pink
   brown
   inconspicuous
  flower type
   daisy- or dandelion-like
   bilateral/irregular symmetry
   radial symmetry 5 petals
   petals indistinguishable
Fruit or Cone
  mature fruit dehiscence
   opening along 1-2 seams
   opening along 3 to many seams
   does not split open to release seed

PSC 5550/6550 Set 1 Weeds

Corey V. Ransom and Heather Elwood
Species Count: 24

Amaranthaceae

Asteraceae

Caryophyllaceae

Convolvulaceae

Euphorbiaceae

Fabaceae

Geraniaceae

Malvaceae

Oxalidaceae

Plantaginaceae

Poaceae

Polygonaceae

Ulmaceae