Many gardeners don't realize that choosing between single-petaled and double-petaled flowers can make a big difference in helping pollinators do their jobs, and why. Single-petaled flowers ...

The flower had many concentric cycles of petal-like organs in sets of three, arranged in whorls, and was bisexual. Hervé Sauquet, from Université Paris-Sud, France, one of the authors of the ...

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