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Though I have never actually seen it in real life, I have seen a hybrid gladiolus diagram where the new roots of a growing corm (bulb) originate. They grow from the base of the new corm for that season, which is above the old corm from the season before. I put a red arow in the photo where I mean.
But as you can also see in this pic taken this spring, there are new roots at the base of the old corm. This species is Gladiolus atroviolaceus. Now it may just be that there will still be roots starting where the aforementioned diagram says, and it's still just to early in growth. But that diagram showed absolutely no roots growing from the old corm.
Is there a difference between hybrids and species, or some species and other species?
Click the image for an enlarged view.
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