...and through public demand here's a couple of pictures from, first, the National Rhubarb Collection at RHS Wisley (with over 100 varieties) and secondly the collection from Harlow Carr near Harrogate on the edge of the Rhubarb Triangle with a traditional forcing pot
....and yes Rover it is indeed a vegetable, it's just us in the west that have taken to piling loads of sugar over it. In its homelands in West Asia it is often used as an unsweetened vegetable. For example, Braised Iranian Style Pigeon with Rhubarb anyone?