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| flowers in April | flower closeup--how many petals and stamens are present? Do you see how the filaments of the stamens are fused to the petals? Notice that the stigma is shaped like a club--this is always the case in Calylophus, while in Oenothera the stigma is cross-shaped. |
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| leaves and flower buds--what leaf shape is present? what leaf margin is present? | more leaves and buds--do you see that the flower buds are always clustered at the tips of branches? |
