ID requested for Trillium cf. chloropetalum

Jane McGary
Tue, 02 Apr 2013 09:29:05 PDT
Regarding the question about red-flowered Trillium in California's 
Redwood National Park, I recently posted a query about the taxonomic 
status of Trillium kurabayashii, a red trillium from around the 
Oregon-California border commonly grown in gardens here in Portland. 
I learned that the name T. angustipetalum is now applied to 
populations in some parts of California, and CalFlora's website seems 
to imply that T. kurabayashii has been sunk in that name. I am 
growing a red trillium from Tuolumne County (one of the T. 
angustipetalum locales) and several "kurabayashii" from Portland 
gardens. The latter eventually grow larger. I received some very 
interesting private correspondence from Larry Neel, who sent me 
photos of a remarkable number of color variants of both red trilliums 
and T. chloropetalum that he photographed in the wild. It still isn't 
clear to me whether T. kurabayashii is a currently accepted taxon, or 
sunk in angustipetalum, or what the difference between the two is 
other than size and distribution. In any case, these two names cover 
any red trillium that might be in Redwood National Park, and T. 
chloropetalum appears now to be restricted to populations with 
sessile, whitish (greenish, yellowish) flowers and red-mottled 
leaves. The other western white trilliums do not have sessile flowers.

Jane McGary
Portland, Oregon, USA

At 08:30 AM 4/2/2013, you wrote:
>(Forwarded from the contact form)
>"Hi, I went camping in the Redwood National Park this weekend, and
>found a species of red trillium I can't ID. I'd like to send a pic,
>hoping one of you guys might know what it is. I think it is a Trillium
>chloropetalum. Thanks Jessica"
>To see her photo in habitat scroll to the bottom of the Mystery Bulb

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