Jane, Which treatment takes this approach? The FNA treatment was written by case and recognizes those that are in his book as well. My advisor and I have a phylogeny (mostly as evidence of a new species from Tennessee) coming out soon on Phyllantherum in the southeastern US, but it lacks all but the western albidum. I am looking for as many as possible of the western species and numerous populations of each if possible --- i do not want living plants though. This may help to clarify the nomenclature some. I have never seen the type of chloropetalum, but the chloro- suggests that it is not purple. Aaron --- On Wed, 3/20/13, Jane McGary <janemcgary@earthlink.net> wrote: From: Jane McGary <janemcgary@earthlink.net> Subject: [pbs] Trillium angustipetalum syn. T. kurabayashii To: "Pacific Bulb Society" <pbs@lists.ibiblio.org> Date: Wednesday, March 20, 2013, 7:39 AM I was comparing some trilliums starting to flower in the garden under the names T. kurabayashii and T. chloropetalum, so I researched them online. I see that the name T. angustipetalum has superseded T. kurabayashii for red-flowered trilliums, and that T. chloropetalum is now apparently restricted to the whitish-flowered ones in California. Both are sessile trilliums. Around here most people grow a form of T. angustipetalum from southern Oregon, known at least for a long time as kurabayashii; it can grow very large, reaching at least 65 cm in flower, with huge leaves. I also have a plant sent me by my brother, who dug it up while planting apple trees in an orchard in Tuolumne County, California. It's considerably smaller than "kurabayashii" but is within what CalFlora defines as T. angustipetalum. Can one of our California flora experts tell me if the large Oregon population is the same as the smaller California one, or if it is considered a subspecies? Thanks, Jane McGary Portland, Oregon, USA