Consider the verb defer. There is no verb stem *fer. Fer is a verbal root. It is found in refer, infer, prefer, differ, prefer, offer. The forms to the left of -fer are prefixes which cannot occur in ...

More information: Ke‐Yan Zhang et al, Linkages among stem xylem transport, biomechanics, and storage in lianas and trees ...

Q: Why do some of my Christmas cactuses develop a woody stem that eventually rots and falls off? We don’t overwater them. A couple of them will develop the woody stems. I usually break them off, save ...