|Kingdom||Plantae||Plants, but not fungi, lichens, or algae|
|Subkingdom||Tracheobionta||Vascular plants—plants with a “circulatory system” for delivering water and nutrients|
|Division||Magnoliophyta||Flowering plants, also known as angiosperms|
|Class||Magnoliopsida||Dicotyledons—plants with two initial seed leaves|
|Subclass||Asteridae||A large class that encompasses asters|
|Order||Asterales||Flowering plants with a central disk flower and surrounding petals, like daisies|
|Family||Asteraceae||The aster family, which also includes daisies and sunflowers; from the Greek ἀστήρ, “star,” for the star-shaped flowers|
|Genus||Packera||Named after botanist John G. Packer (1929- ), specialist on the flora of Alberta and on Arctic and alpine flora, instructor in the Department of Botany at the University of Alberta 1958-1988, co-author with Cheryl Bradley of Checklist of the rare vascular plants in Alberta (1984), one of the editors of the English edition of Flora of the Russian Arctic (2000), co-author with his wife of Some Common and Interesting Plants of San Miguel de Allende (Mexico). He also revised E.H. Moss’s Flora of Alberta (1983), worked to protect Mountain Park in the Canadian Rockies from an open-pit coal mine, and is currently contributor and on the editorial committee for Flora of North America|
Senecio plattensis Nutt.
Senecio pseudotomentosus Mack. & Bush
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