To facilitate your understanding of specific weed species that display much of the diversity in life history traits found among individual weed species. Understanding the particular life histories and traits of these important species will provide a "big picture" view within which to integrate and make sense of the concepts and individual traits discussed.
| SEXUAL: Obligate Outcrossing |
SEXUAL: Partial Outcrossing |
SEXUAL: Self-fertilized |
ASEXUAL: Apomixis |
|
| dicotyledonous forb |
Cannibis
sativa Cannibis indica hemp marijuana |
Amaranthus
spp. some pigweed species |
Taraxacum
officinale dandelion |
|
| monocotyledonous grass |
Zea
mays volunteer corn |
Avena
fatua wild oat |
Setaria
spp.-gp. foxtails |
| SEXUAL: Seed | SEXUAL: Spores | ASEXUAL:
Vegetative Bud Rhizomes |
ASEXUAL:
Vegetative Bud Rootstocks |
ASEXUAL:
Vegetative Bud Other |
ASEXUAL: Seed |
| Setaria
spp. foxtail species-group |
Equisetum
arvense field horsetail |
Elytrigia
repens quackgrass |
Circium
arvense Canada thistle |
Cyperus
esculentus yellow nutsedge |
Taraxacum
officinale common dandelion |
