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Etymology: Tanacetum: from the medieval Latin name tanazita, in turn derived from Greek athanasia, "immortality," of uncertain application to this taxa
Plants: erect, perennial, 1 1/2' - 5' tall, aromatic forb Leaves: many, mostly hairless, 4"-8" long and half as wide, dotted, 4-10 parirs of feathery, pinnate divisions Flowers: head 1/4" wide with only yellow disk flowers; inflorescence with 20-200 heads in a dense cluster; blooms Aug.-Oct. Habitat: fields, roadsides, disturbed sites Hazardous: Careful, this plant is hazardous! Invasiveness: Restricted Invasive - Eradicate! Conservation Status: Introduced - naturalized; ecologically invasive
Flora of North America: Flora of North America WIS DNR-Bureau of Endangered Resources: Detailed information on Wisconsin invasive species including decription, habitats, control methods USDA Plants Database: Federal Distribution and detailed information including photos Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"
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© Wisconsin State Herbarium, UW-Madison
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