Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

Please direct any comments to

Thank you.

Search Results:     Genus: Sonchus  

List for printing without synonyms and photos.
Checklist from Wisconsin State Herbarium
Click on taxon for details including: Photos ( * ), Distribution Maps ( + ), Ethnobotany and Google Search.
      Family Asteraceae (click for list of genera only)  
            Lactuca biennis (Moench) Fernald * +
              tall blue lettuce, woodland lettuce
                 Lactuca biennis (Moench) Fernald f. aurea (Jenn.) Fernald
                 Lactuca biennis (Moench) Fernald f. integrifolia (Torr. & A.Gray) Fernald
                 Lactuca spicata auct. non (Lam.) Hitchc.
                 Lactuca spicata (Lam.) Hitchc. var. integrifolia (Torr. & A.Gray) Britton
                 Mulgedium spicatum auct. non (Lam.) Small
                 Mulgedium spicatum (Lam.) Small var. integrifolium (Torr. & A.Gray) Small
                 Sonchus biennis Moench
Image of Lactuca biennis (Moench) Fernald
            Lactuca ludoviciana (Nutt.) Riddell * +
              prairie lettuce, prairie wild lettuce, western wild lettuce
                 Lactuca campestris Greene
                 Lactuca campestris Greene var. typica Wiegand
                 Sonchus ludovicianus Nutt.
Image of Lactuca ludoviciana (Nutt.) Riddell
            Lactuca pulchella (Pursh) DC. * +
              showy blue lettuce
                 Lactuca oblongifolia Nutt.
                 Lactuca tatarica (L.) C.A.Mey. subsp. pulchella (Pursh) Stebbins
                 Lactuca tatarica (L.) C.A.Mey. var. heterophylla (Nutt.) B.Boivin
                 Lactuca tatarica (L.) C.A.Mey. var. pulchella (Pursh) Breitung
                 Mulgedium heterophyllum Nutt.
                 Sonchus pulchellus Pursh
                 Sonchus tataricus L., pro parte
Image of Lactuca pulchella (Pursh) DC.
            Sonchus L. *
              sow-thistle (DISTRIBUTION MAP GALLERY of SPECIES)
            Sonchus arvensis L. * +
              field sow-thistle, perennial sow-thistle
                 (for list of synonyms - see the varieties)
Image of Sonchus arvensis L.
            Sonchus arvensis L. var. arvensis * +
              field sow-thistle, perennial sow-thistle
                 Sonchus arvensis L. subsp. arvensis
                 Sonchus arvensis L. var. shumovichii B.Boivin
                 Sonchus arvensis L. var. typicus Beck
Image of Sonchus arvensis L. var. arvensis
            Sonchus arvensis L. var. glabrescens GŁnther, Grab. & Wimm. * +
              marsh sow-thistle
                 Sonchus arvensis L. subsp. uliginosus (M.Bieb.) Nyman
                 Sonchus uliginosus M.Bieb.
Image of Sonchus arvensis L. var. glabrescens GŁnther, Grab. & Wimm.
            Sonchus asper (L.) Hill * +
              prickly sow-thistle, spiny sow-thistle
                 Sonchus asper (L.) Hill f. glandulosus Beckh.
                 Sonchus asper (L.) Hill f. inermis (Bisch.) Beck
                 Sonchus asper (L.) Hill var. inermis Bisch.
                 Sonchus asper (L.) Hill var. inermis Bisch. f. gracilis A.F.Schwarz
                 Sonchus asper (L.) Hill var. pungens Bisch.
Image of Sonchus asper (L.) Hill
            Sonchus oleraceus L. * +
              common sow-thistle, field sow-thistle
Image of Sonchus oleraceus L.

Botany News/Events
Book We Recommend
Historical Botanists
Other Links
Botanical Club of Wisconsin (off site)
UW-Stevens Point Biology Dept.
Plants of Wisconsin
Vascular Plants
Natural Communities
Botany News/Events
Other Links
Lichens (off site)   
Tom Volk's Fungi (off site)
Taxonomy of Vascular Plants
                          Vascular Plants
Browse by Identification Guides
Family Wildflowers
Genus Trees
Common Names Shrubs
Search by Vines
Names Aquatic-Semi aquatic
Specimens Ferns - Fern Allies
Blooming Times Grasses, Sedges, or Rushes
County & Status Other Resources  
Town Range Taxonomy of Vascular Plants
  WI Checklist & CofC Values
Browse by:
Common Name
Search by:
Copyright © 2012 Permissions Contact Us Web Map