PICTURED
Female flower of Luffa Gourd.
This is an interesting plant that produces an edible squash.
Although, if collecting seeds, or it's the Luffa Sponge you are wanting, the gourds need to be fully ripened and left on the vine to dry. Late in fall, the luffas should be ready to harvest. You will know they are ready when you can shake them and hear the seeds rattling inside