Key to 4Petals (Flowers with 4 Petals) Shared-Characteristic Group

Brassicaceae	Brassicaceae	Capparaceae	Gentianaceae	Grossulariaceae
Nyctaginaceae	Onagraceae	Onagraceae	Onagraceae	Papaveraceae
Plantaginaceae	Rhamnaceae	Rubiaceae	Rutaceae	Tamaricaceae

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