Found the idea at Deviantart. Dated 2007, but still applicable in Inkscape 0.48. Quick and easy. I like those kinds of tuts. I like that the tut makes petals with two rounded corners rectangles and Path/Intersection. The gradient is transparent on the white end. Get a different effect if it's opaque/solid. Mine is on black background, so it looks different. With the Tiled Clones, 1 Row, 6 Columns with a P6 60 degree rotation is sufficient. No need to select the width/height or create more rows and columns than that.