Ambrosia trifida gallery
Highly allergenic species commonly found in disturbed soils
Great Ragweed Gallery
Flowers
Brady's Run Park (Beaver Co)
by Mark Welchley on 08/02/2012
Plant form
Boalsburg Creek (Centre Co)
by Maria Pavlova on 08/02/2021
Plant form
Buffalo Run Park (Centre Co)
by Maria Pavlova on 08/23/2022
Flowers & stem
Buffalo Run Park (Centre Co)
by Maria Pavlova on 08/23/2022
Three-lobed leaf
Matternville (Centre Co)
by Maria Pavlova on 09/02/2012
Flower & lobed leaves
Matternville (Centre Co)
by Maria Pavlova on 09/02/2012
Flowers
Brady's Run County Park (Beaver Co)
by Mark Welchley on 09/05/2012
Stem
