Apparently, Oxalis regnelli is a synonym of Oxalis triangularis. There are quite a few photos under O. regnelli 'Triangularis' to be moved to O. triangularis before O. regnelli can be deleted and listed as a syn. .

Thank you Tee.

I had one or two over there too.

I love the way so many people research the latest information, keeping our database updated.

Thanks Tee, I took care of this, mostly. If you have more information I'd love to hear it. One of the problems of the taxon DB's is they often subsume plants with "minor" differences like leaf color or shape which are a big deal to gardeners and horticulturalists. With this one if there is a standard green leaved type then maybe the 'Atropurpurea' cv/variety should be broken out as a separate entry.

Hi Evan ... There are several varieties of oxalis with solid green leaves, such as O. latifolia. I don't know that there is a standard green-leaved variety, putting it that way. And I do believe that 'Atropurpurea' isn't commonly recognized, but Oxalis purpurea (purple leaved wood-sorrel) is. At least I think so.

Frankly, it's a big headache.

valleylynn said:I love the way so many people research the latest information, keeping our database updated.

And, I thank each and every one of you wonderful folks for your hard work!

SongofJoy said:Hi Evan ... There are several varieties of oxalis with solid green leaves, such as O. latifolia. I don't know that there is a standard green-leaved variety, putting it that way. And I do believe that 'Atropurpurea' isn't commonly recognized, but Oxalis purpurea (purple leaved wood-sorrel) is. At least I think so.

Frankly, it's a big headache.

When I say variety/cv I'm referring to O. triangularis not other species. I agree it's a headache (doable though) but I worry that we're eliminating horticulturally important plants. If A. triangularis is found in both green and purple types but these are no longer perceived by taxonomists as significantly distinct enough for a sub-taxa, I feel we should still include the sub-taxa as a separate DB entry. So for instance:

Acer palmatum has green foliage
Acer palmatum var. atropurpureum and it's cultivars have red foliage. It and Acer palmatum f. atropurpureum are synonyms of Acer palmatum but I feel should have a separate DB entry as A. palmatum 'Atropurpureum'.

Oxalis triangularis is the purple shamrock. It only comes in purple. Oxalis regnelli is a synonym of that.

I agree about plants like the Acer you mentioned Evan.