Plant Database forum: Blackberry confusion

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Name: Deb
Pacific Northwest (Zone 8b)
Region: Pacific Northwest Organic Gardener Herbs Dragonflies Dog Lover Keeper of Poultry
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Bonehead
Apr 1, 2015 9:15 PM CST
This is of my own making, and sorry to create work for others...

I have posted 3 photos under Rubus armeniacus which I thought was the new name for R. discolor - the common weedy blackberry that plagues the PNW. I am now confused if these should be under R. ulmifolius? I noted in My List that I have both included and am trying to figure out which is correct.

At this point, I have the same photo posted to R. armeniacus and R. aumifolius so one needs to be deleted.

I want to live in a world where the chicken can cross the road without its motives being questioned.
Name: Zuzu
Northern California (Zone 9a)
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zuzu
Apr 1, 2015 9:45 PM CST

Plants Admin

Deb, I'm fairly certain that R. ulmifolius is thornless, but I see thorns on yours. Your photos look exactly like R. armeniacus, so I'll leave them in that entry and delete the photo in the R. ulmifolius entry.

As for R. discolor, it may have been a misnomer. It's now classified only as an ambiguous synonym, and for two separate species -- R. ulmifolius and R. rigidus, neither of which resembles your photos.
Name: Deb
Pacific Northwest (Zone 8b)
Region: Pacific Northwest Organic Gardener Herbs Dragonflies Dog Lover Keeper of Poultry
Birds Lover of wildlife (Raccoon badge) Garden Ideas: Master Level Celebrating Gardening: 2015 Garden Sages Plant Identifier
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Bonehead
Apr 2, 2015 11:50 AM CST
And to further confuse me, my trusty field guide (Plants of the Pacific Northwest Coast) has only one entry, R. discolor, for the two different brambles in my neck of the woods. I've always called the more common one Himalayan, which I believe is R. armeniacus but is alternately listed as R. procerus in my field guide (synonym?) and the less common is I guess R. laciniatus. I'll keep those two in My List and double check my photos. Such a bunch of confusion for what is clear to me two different plants. Thanks for deleting the erroneous photo.
I want to live in a world where the chicken can cross the road without its motives being questioned.
Name: Zuzu
Northern California (Zone 9a)
Forum moderator Plant Database Moderator Charter ATP Member Region: California Cat Lover Roses
Clematis Irises Garden Ideas: Level 2 Celebrating Gardening: 2015 Plant Identifier Garden Sages
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zuzu
Apr 2, 2015 12:06 PM CST

Plants Admin

There's a lot of confusion surrounding those names. Rubus procerus is another questionable name that now has only the status of an ambiguous synonym of either R. praecox or R. ulmifolius. Rubus laciniatus is still an accepted species name, however. I see that some of our Rubus entries in the database need to be updated. I'll do that tonight.

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