Brown spine like knobs on Philodendron

Question

I have what seems to be a healthy Phildendron. I noticed today it has brown spine-like knobs growing down the length of the vines of the plant. Sort of like reptile with spines down its back. I’ve never noticed them before or on any large Philodendron I have seen in the past. Is this a disease or should they be there?

Answer 1

These are aerial roots. They are normal and natural. The plant would use these in the wild to attach to a tree and climb upwards.