I believe this plant is Synadenium compactum var. rubrum, African Milk Bush (please correct me if I'm wrong).
I recently had it sitting next to a new strawberry plant I was watering daily -- somehow didn't really think about the fact that the water was spreading across the bench to the base of this planter too - for about a month. I know, rookie mistake. Otherwise I hadn't watered it at all during this time, and rarely do. (FYI I'm in Los Angeles, Zone 10a I think, it's hot and sunny every day). I've since moved it away .
I see this pattern at the soil line I didn't notice before. Worried it may have started to rot from my error. I also know it looks like it's ready to move into a larger container. Is this rot, and Can I possibly salvage this? Please any help would be appreciated!!