Ambrosia trifida
| Scientific Name: | Ambrosia trifida |
| Synonym: | |
| Family: | Asteraceae |
| Common Name: | Giant Ragweed |
| Authority: | Linnaeus |
| Etymology: | |
| C Value: | 0 |
| Wetness: | FAC+ |
| # of Species in Genus in Illinois: | 7 |
| Duration: | Annual |
| Reproduction: | Monoecious |
| Flower Type: | Imperfect |
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| Flower # of Parts: | |
| Flower Color: | Yellow, Green |
| Growth Habit: | Forb |
| Leaf Arrangement: | Opposite |
| Leaf Type: | Simple |
| Leaf Shape: | |
| Leaf Shape Term: | |
| Leaf Margin: | Lobed |
| Leaf Toothing: | Lobed |
| Stem Surface: | |
| Trunk/Bark: | |
| Armature: | |
| Twig Characteristics: | |
| Habitat: | |
| Distribution: | BONAP Distribution Map |
| Status (State): | |
| Status (Federal): | |
| ID Tips: | stems are covered with white hairs. distinguished from other Ambrosia spp. (Ragweeds) by its palmately Lobed leaves; other Ragweeds have leaves that are pinnatifid or bipinnatifid. |
| Gee Whiz: | |
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| More Info: | Illinois Wildflowers Search |