Your Morris stems are cedar. To replicate, steam-bend a single piece of cedar from which the entire stem, including the splayed end, is shaped. The cleaner/bleach is discussed here in many threads. Do a search and you'll find plenty of comments, but the best performing brands seem to be Te-Ka and Snappy Teak-Nu, available from a variety of suppliers either locally or online (if you haven't already, check out Jamestown Distributors for an excellent mail-order company). Easy to use and great results. Don't be afraid of the word "bleach" - this is not your run-of-the-mill laundry bleach. Wood treated with laundry bleach - sodium hypochlorite - looks "bleached"... washed out, patina gone. The Snappy and Te-Ka preserve the patina but get out much of the stains that are in the wood.