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Photographer: Emmet J. Judziewicz
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Family Asteraceae
Iva xanthifolia Nutt.
bur-weed marsh-elder, giant sump-weed
Iva: a Latin derivation from the mint Ajuga iva, which has a similar aroma
xanthifolia: xanthos for "yellow;" folius for "leaves"
Hazardous 
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| Status: | Native |
| Plant: | erect, annual, 1 1/2'- 6' tall, unbranched, coarse forb; stems smooth toward the bottom |
| Flower: | head green to cream, no rays, no bracts; inflorescence with many, mostly stalkless heads in 10" long, large, branched clusters; blooms Aug.-Oct. |
| Leaf: | mostly opposite, upper might become alternate; long-stalked, very widely oval, doubly toothed, roughly hairy on the top, softly fuzzy and light green on the bottom |
| Habitat: | moist; shores, disturbed sites |
| (Glossary) |
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