Chelone glabra

Often, however, the information available is so indefinite that the search is hopeless from the beginning. The folklore that rheumatism can be cured by infusion of rheumatism root or rheumatism weed suggests the identification of this herb with a view to further investigation. Clute (3) has listed all such vernacular descriptive plant designations. Rheumatism root may be Chelone glabra (Scrophulariaceae), Chimaphila maculata (Ericaceae), Apocynum canna-binum (Apocynaceae), Jeffersonia diphylla (Berberidaoeae), or e en Dioscorea... 

Moths and butterflies that sequester iridoid compounds are unpalatable to birds that might be potential predators. Adults of Euphydryas phaeton that fed on Chelone glabra (Scrophulariaceae) during larval development are emetic to birds that eat a piece of the butterfly (Rimpler, 1991). 

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