Where do branches grow on the stems of horsetail plants?

In horsetail plants (Equisetum), branches grow from the nodes of the stems. These branches typically emerge from below the sheaths—which are formed by the reduced, whorled leaves—and circle the shoots in a manner resembling the spokes of a wheel. While branch buds are initiated at these nodes, their development varies by species; in some, growth remains inhibited, while in others, they develop into distinct, often whorled, branches.12