If it's more on stem it could be Neodidymelliopsis Cannabis.A stem canker. I had this on a outdoor plant last summer on a branch. Not flower. Also if its from a recent trim and you busted through the herd( skin)your girl is sending her cells into overdrive to repair the damage.She will repair and strengthen with xylem and phloem cells.If it's on the cola I would have to look it up. All I have is my notes I'm sorry all my books at Ranch. I need to get my ass out there. I love the questions because it gets you sharp for your own plants. Well blessings on all u grow my FELLOW GROWER.