|
Parthenium hysterophorus |
Ambrosia artemisiifolia |
Artemisia vulgaris |
![](Parthenium_hysterophorus_DSCN1458.jpg) |
![](Ambrosia_artemisiifolia_P1010007.JPG) |
![](Artemisia_vulgaris-AE2F67CE2C.jpg) |
top view of plant, stem glabrous |
top view of plant, stem hairy |
top view of plant, stem glabrous |
![](Parthenium_hysterophorus_DSC_0323.jpg) |
![](Ambrosia_artemisiifolia_DSC_0031.jpg) |
![](Artemisia_vulgaris_4578.jpg) |
heads not close together, flowers more obvious than involucre |
inflorescence spike-like with many heads together, leafless, involucre more obvious than flowers |
inflorescence spike-like with many heads together, leafy, involucre more obvious than flowers |
![](Parthenium_hysterophorus_DSCN1923.jpg) |
![](Ambrosia_artemisiifolia_DSCN1486.jpg) |
![](Artemisia_vulgaris_DSC_0088-89.jpg) |
leaves concolorous, pinnapartite |
leaves concolorous, (double) pinnapartite |
leaves discolorous, pinnapartite |
![](Q-Bank_banner_onder.jpg) |