1. Tall annual marsh elder common in moist rich soil in central North America that can cause contact dermatitis; produces much pollen that is a major cause of hay fever
   - burweed marsh elder, false ragweed

Type of: iva, marsh elder

• Chelone glabra
• Chelonethida
• Chelonia
• Chelonia mydas
• chelonian
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• Chelonidae
• Cheloniidae
• Chelsea
• Chelsea tractor
• Chelyabinsk
• Chelydra
• Chelydra serpentina
• Chelydridae
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• Chemakuan
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