- Thelower,cylindricalpartofagamopetalouscorollaoragamosepalouscalyx.agroupoffamiliesofmoreorlessadvancedtreesandshrubsandherbshavingeitherpolypetalousorgamopetalouscorollasandoftenwithovulesattachedtothewallsoftheovary;contains69familiesincludingErica...
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