Sonchus oleraceus L.
(Smooth Sow-thistle)

Taxonomic hierarchy:
SpeciesSonchus oleraceus (Smooth Sow-thistle)
GenusSonchus (sow thistles)
TribeLactuceae (“dandelions”)
SubfamilyLACTUCOIDEAE (“dandelions”)
FamilyASTERACEAE (daisies, dandelions and thistles, composite)
OrderASTERALES (daisies, dandelions, thistles and bell flowers)
SubclassEU-DICOTS (dicotyledonous flowering plants)
ClassMAGNOLIOPSIDA (flowering plants)
PhylumTRACHEOPHYTA (vascular plants)
KingdomPLANTAE (plants)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
Records of Sonchus oleraceus (Smooth Sow-thistle) :
1: Sonchus oleraceus (Smooth Sow-thistle)
29 May 2011 OSGR: SY67 50° 30’ N, 2° 30’ W Vice County: Dorset (VC 9) England
growing on disturbed ground
Image 1: Capitulum bud - side view - white backgroundImage 2: Capitulum buds - side view - white backgroundImage 3: Capitulum - face view - white backgroundImage 4: Capitulum - face view - white background (2)Image 5: Capitulum - face view - white background (3)Image 6: Capitulum - face view - white background (4)Image 7: Capitulum - face view - white background (5)Image 8: Capitulum - face view - white background (6)Image 9: Capitulum - LS - natural backgroundImage 10: Capitulum - oblique view - white backgroundImage 11: Capitulum - side view - white backgroundImage 12: Flowering plantImage 13: Fruiting capitulum - black backgroundImage 14: Fruiting capitulum - cut open - black backgroundImage 15: Fruiting capitulum - white backgroundImage 16: Inflorescence - side view - white backgroundImage 17: Inflorescence - top view - white backgroundImage 18: Inflorescence - top view - white background (2)Image 19: Inflorescence - white backgroundImage 20: Inflorescence - white background (2)Image 21: Inflorescence - white background (3)Image 22: Capitulum - LS - enlarged - natural backgroundImage 23: Capitulum - LS - enlarged - natural background (2)Image 24: Capitulum - LS - enlarged - natural background (3)Image 25: Fruiting capitulum - cut open - enlarged - black backgroundImage 26: Seed - magnified - white backgroundImage 27: Seed - magnified - white background (2)Image 28: Seed - magnified - white background (3)Image 29: Seed - magnified - white background (4)Image 30: Seed - magnified - white background (5)Image 31: Seeds - enlarged - white backgroundImage 32: Seeds - highly enlarged - white backgroundImage 33: Seeds - highly enlarged - white background (2)
2: Sonchus oleraceus (Smooth Sow-thistle)
14 Jun 2003 OSGR: SU56 51° 20’ N, 1° 20’ W Vice County: Berks (VC 22) England
Image 1: AuriclesImage 2: Auricles (2)Image 3: CapitulaImage 4: Capitula (2)Image 5: Capitula (3)Image 6: Capitula and leavesImage 7: CapitulumImage 8: Leaf - basalImage 9: Leaf - caulineImage 10: Leaf - cauline - under surfaceImage 11: LeavesImage 12: Leaves (2)Image 13: PlantImage 14: Plant (2)Image 15: Plant - in situImage 16: Plant - in situ - baseImage 17: Plant - upper sectionImage 18: Leaf - basal - top surfaceImage 19: Leaf - cauline - top surfaceImage 20: Leaf - cauline - under surfaceImage 21: Leaf tip - top surface - magnifiedImage 22: Leaf tip - under surface - magnified
3: Sonchus oleraceus (Smooth Sow-thistle)
20 Sep 1970 OSGR: TQ20 50° 50’ N, 0° 10’ W Vice County: East Sussex (VC 14) England
Image 1: Inlorescence - close-upImage 2: Leaf rosetteImage 3: Plant

Sonchus oleraceus (Smooth Sow-thistle) may be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Sonchus oleraceus (Smooth Sow-thistle)
BioInfoBioInfo (www.bioinfo.org.uk) has 19 host/parasite/foodplant and/or other relationships for Sonchus oleraceus (Smooth Sow-thistle)
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