Your pic of the leaves in your new post...very clear thank you.
Still confirms Vancouvaria to me.
However, you misunderstanding what a single stem of this plant looks like .
May I suggest you go to the plant and follow a stem right back to where it comes out of the ground.....cut it and lay it flat on a piece of paper and then take a pic.
The plant will not miss one stalk.
It is a very complex leaf..... described as pinnately compound leaves divided 2 or 3 times with 3 lobed leaflets.
or
Leaves are opposite, basal, compound leaves. They are 10 - 40cm long and have long stalks. They are usually twice divided into 3’s with 9-15 leaflets. These leaflets are peculiar and distinctive in shape, being bluntly triangular or quadrangular, usually with three points, webbed between
Yes, plants have a place in the world, a home... where they grow naturally, but now due to planthunters, propagators and nurseries they can be found in many countries that nature never intended
We live in the UK and grew Vancouvaria very successfully in our damp woodland..it was about 2ft tall
I am very familiar with both V. hexandra and V. chrysantha..with yellow flowers.
A plant that looks a bit like your flower sketch is Semiaquilegia.ecalcarata.
However the leaves are very very different.
https://www.google.co.uk/search?q=S...IMaM7AaI54FI&ved=0CAgQ_AUoAQ&biw=1536&bih=728