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tulip poplar tree (Liriodendron tulipifera)

Carpels (ovary and styles) are arranged along an elongate receptacle in a cone-like fashion. This structure originally tricked botanists into thinking that it was a primitive flower and possibly a relict species of early flowering plants (angiosperms). Molecular research has revealed that this and related species are not some sort of transitional species connecting angiosperms with gemnosperms.

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This time-lapse is a combination of three sequences of the two specimens. Two used a Canon Digital Rebel controlled by a laptop running the program RemoteCapture 2.7 taking one frame every 3 minutes. The other was taken using a Nikon Coolpix 5400 controlled by a Digisnap 2000 taking one frame every 4 minutes. Each full sequence was shot over approximately 11.5 hours.