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Keys
Vascular plant groups
Club mosses
Ferns
Vegetative key to families
Gymnosperms
Flowering plants
Genera
Families
Onagraceae
Stamens twice as many as the petals
Onagraceae
consider the other alternative
Floral
tube not extending above the
ovary
choose this alternative
reject this alternative
Sepals persisting on to fruiting stage. Petals yellow. Aquatics or swamp plants
Ludwigia
choose this alternative
reject this alternative
Sepals falling soon after flower opens.
Terrestrial
plants