Trillium angustipetalum syn. T. kurabayashii

aaron floden
Tue, 19 Mar 2013 17:03:04 PDT

 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.



--- On Wed, 3/20/13, Jane McGary <> wrote:

From: Jane McGary <>
Subject: [pbs] Trillium angustipetalum syn. T. kurabayashii
To: "Pacific Bulb Society" <>
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 I see that the name T. angustipetalum has superseded T. 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?

Jane McGary
Portland, Oregon, USA

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