Hypericum tetrapterum Fr.
(square-stalked St John’s-wort)

Taxonomic hierarchy:
SpeciesHypericum tetrapterum (square-stalked St John’s-wort)
GenusHypericum (St John's worts)
FamilyHYPERICACEAE (St John’s-worts)
OrderMALPIGHIALES (poplars, willows, St John's worts, spurges and violets)
SubclassEU-DICOTS (dicotyledonous flowering plants)
ClassMAGNOLIOPSIDA (flowering plants)
PhylumTRACHEOPHYTA (vascular plants)
KingdomPLANTAE (plants)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
Records of Hypericum tetrapterum (Square-stalked St John’S-wort) :
1: Hypericum tetrapterum (Square-stalked St John’S-wort)
29 Jul 1998 OSGR: SU57 51° 30' N, 1° 10' W Vice County: Berks (VC 22) England
Image 1: Flowering shoot - stem winged below terminal pair of leavesImage 2: FlowersImage 3: Flowers and budsImage 4: InflorescenceImage 5: Inflorescence tipImage 6: Leaf - uppersideImage 7: Leaf - undersideImage 8: Leaves - upperside and undersideImage 9: Stem showing wings

Hypericum tetrapterum (Square-stalked St John’S-wort) may be covered by identification literature listed under the following higher taxa:

BioInfoBioInfo (www.bioinfo.org.uk) has 12 host/parasite/foodplant and/or other relationships for Hypericum tetrapterum (Square-stalked St John’S-wort)
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