Epilobium tetragonum L.
(Square-stalked Willowherb, Southern Willow-herb)

Taxonomic hierarchy:
SpeciesEpilobium tetragonum (Square-stalked Willowherb, Southern Willow-herb)
GenusEpilobium (willow-herbs)
FamilyONAGRACEAE (willowherbs and evening primroses)
OrderMYRTALES (willowherbs, loosestrifes, gums and tea-trees)
SubclassEU-DICOTS (dicotyledonous flowering plants)
ClassMAGNOLIOPSIDA (flowering plants)
PhylumTRACHEOPHYTA (vascular plants)
KingdomPLANTAE (plants)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
Records of Epilobium tetragonum (Square-stalked Willowherb, Southern Willow-herb) :
1: Epilobium tetragonum (Square-stalked Willowherb, Southern Willow-herb)
29 Jul 2002 OSGR: SU56 51° 20’ N, 1° 10’ W Vice County: Berks (VC 22) England
Image 1: Capsule portion - magnifiedImage 2: E. tetragonum (L) and E. obscurum (R)Image 3: Flower and ovary - magnifiedImage 4: Flower - magnifiedImage 5: Flowers and inflorescenceImage 6: Flowers, buds and capsuleImage 7: Flowers - magnifiedImage 8: Flower - two petals removed - magnifiedImage 9: Hairs on hypanthium - magnifiedImage 10: InflorescenceImage 11: Inflorescence - enlargedImage 12: Leaf tip - under surface - magnifiedImage 13: Leaf - top surfaceImage 14: Leaf - top surface - magnifiedImage 15: Leaf - under surfaceImage 16: Leaf - under surface - magnifiedImage 17: Ovary portion - magnifiedImage 18: Petal - magnifiedImage 19: Plant - lower portionImage 20: Plant - mid portionImage 21: Plant - upper portionImage 22: Stem portion - magnifiedImage 23: Upper stem - magnified

Epilobium tetragonum (Square-stalked Willowherb, Southern Willow-herb) may be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Epilobium tetragonum (Square-stalked Willowherb, Southern Willow-herb)
BioInfoBioInfo (www.bioinfo.org.uk) has 11 host/parasite/foodplant and/or other relationships for Epilobium tetragonum (Square-stalked Willowherb, Southern Willow-herb)
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