Oh. Gosh. That's different. The shape is, indeed, what would be called a rose bowl. But I wonder if it might have had a lid? I don't recall having seen this specific item in Carnival Glass before. It reminds me of some United States Glass patterns...and that leads me on to another thought...
There's an unsual covered sugar that has been found in Australia and also in the Far East. I need to find my facts on it and get back to you later. I'll try and do some digging around later when I get a bit of time (fond hope).
The pattern also reminds me of Beaded Cable (which it isn't) and Chariot (which it isn't). Oh the joys of pattern ID.
Meanwhile, if anyone can ID this, I'd be thrilled and overjoyed.