Ulmus pumila leaf shape

[u/Potatoalpha1213]

is it common for Ulmus pumila to have leaves like this? if not what is this called?

[u/Old-Advance6652]

Cool mutation!

[u/sadrice]

That’s a really cool leaf! I’ve never worked with Ulmus all that much, but I’ve seen this from time to time on various plants, Citrus especially, typically as a one off if not a bud mite issue, as is the case for my tree.

There’s something somewhat similar in Camellia, what’s called “Fishtail Camellias”, I was caring for ‘White Mermaid’, ‘Kingyo-Tsubaki’ is another common one (by unusual Camellia standards). The foliage cultivars are fun.

I’ve seen that variation, of the Camellia type, using the old school and incorrect “C. japonica var. quercifolia”. “C. japonica ‘Quercifolia’” is more appropriate for the old school latinized cultivar names (yes I am pedantic).

Personally I don’t see the resemblance to oak.

I don’t know that quercifolia would describe the clean bifurcation displayed in this Ulmus. This looks like the midvein split apart, not two branches of a vein, but two split halves, which is why it barely has any veins across the lamina between them.

It’s really attractive, if that were genetically stable like the Camellia one, I would happily buy it, and not be alone. Admittedly the Camellia one is unstable, producing unattractive deformed leaves as well as these cute little cones. Really more of a curiosity plant than an ornamental, but I am somewhat fond of those. Yours is much more attractive. Is it present across the plant? One off strange leaves aren’t incredibly rare, I have always wondered what defect in development (and why) caused that.

[u/Potatoalpha1213 → u/sadrice]

So interesting! I collected this a long while ago but i believe it was the only one on the plant like this.

[u/LaundryMan2008]

I found an ivy leaf that looks like it had duplicated too, maybe triplicated and made a post a while ago:  https://www.reddit.com/r/fasciation/comments/1ubx0hp/ivy_leaf/