The calamus green sedge, is the pattern I'm most proud of. It was the first, of the calamus series of flies, and is so far my most productive dry caddis pattern. This fly as well as several other outstanding calamus patterns have been featured in fly tyer magazine. I have yet to find a synthetic material that can rival the effectiveness of the "calamus" , or hollow shaft of a mallard flank feather, for the application of a caddis abdomen.