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Key to Saururaceae

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image of plant
Show caption*© 岸本年郎, some rights reserved (CC BY), uploaded by 岸本年郎
1 Flowers in a spike with 4 petal-like basal bracts; ovary of 3 (-4) carpels, these fully fused and forming a single locule, fruit a capsule; stamens 3
image of plant
Show caption*© Keith Bradley
1 Flowers in a raceme without petal-like basal bracts; ovary of (3-) 4 carpels fused only at the base, fruit a schizocarp; stamens 6