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Photographer: Paul Drobot
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Family Iridaceae
Iris pseudacorus L.
pale-yellow iris, water flag, yellow flag, yellow iris, yellow water flag, yellow water iris
Iris: named for the Greek goddess of the rainbow
pseudacorus: false Acorus, old generic name
Hazardous 
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| Status: | Introduced - rarely escaped; potentially invasive |
| Plant: | erect, perennial, semi-aquatic, 2'-3' tall forb; stems usually shorter than the leaves; roots densely crowded rhizomes |
| Flower: | yellow, 6-parted, 4" wide, petals much shorter than the sepals; blooms May-June |
| Fruit: | capsule |
| Leaf: | narrow, stiff, erect, sword-like |
| Habitat: | wet; shallows, shores |
| (Glossary) |
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