Packera paupercula Michx.
Common Name: NORTHERN RAGWORT, BALSAM RAGWORT
Synonym: Senecio plattensis, Senecio pauperculus
Coefficient of Conservatism: 3
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Nt P-Forb

Packera paupercula A. A. Reznicek

Senecio pauperculus and S. plattensis of Michigan Flora.

Generally a calciphile of moist sandy or gravelly (limestone) shores, fens, cedar swamps, thin soil over limestone (alvar); also in dry jack pine, aspen, and oak savanna (especially in moist areas); meadows and marshy ground.

Mahoney & Kowal (2008) present evidence that P. plattensis is a tetraploid of prairie habitats found only to the west of Michigan, and recognize the pubescent plants treated as P. plattensis in Michigan Flora as P. paupercula var. pseudotomentosa (Mackenzie & Bush) R. R. Kowal. A collection from Kalamazoo Co. was cited by Mahoney & Kowal (2008) as var. savannarum R. R. Kowal, a prairie-forest border entity forming colonies by shoots produced adventitiously from its roots, rather than rhizomes (the stems thus straight at the base rather than with an arching base from the upturning rhizome). The full distribution of this entity in Michigan is as yet uncertain. R. R. Kowal has annotated specimens occurring, perhaps disjunctly, in prairies in adjacent Essex Co. Ontario as P. pseudaurea (Rydb.) W. A. Weber & Á. Löve var. semicordata (Mack. & Bush) Trock & T. M. Barkley – a species rather like P. paupercula but with rosette leaves cordate or subcordate basally. This should be looked for in Michigan.

Locations

Alger County
Allegan County
Alpena County
Antrim County
Baraga County
Barry County
Bay County
Benzie County
Berrien County
Branch County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clare County
Clinton County
Crawford County
Delta County
Dickinson County
Emmet County
Genesee County
Gogebic County
Grand Traverse County
Hillsdale County
Houghton County
Huron County
Iosco County
Iron County
Isabella County
Jackson County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Livingston County
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Macomb County
Manistee County
Marquette County
Mason County
Mecosta County
Missaukee County
Monroe County
Montcalm County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ogemaw County
Ontonagon County
Osceola County
Oscoda County
Otsego County
Ottawa County
Presque Isle County
Roscommon County
Schoolcraft County
St. Clair County
St. Joseph County
Tuscola County
Van Buren County
Washtenaw County
Wayne County
Wexford County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 13, 2017. http://www.michiganflora.net/species.aspx?id=417.