Rudbeckia??

[Blue-bellied Frog]

A friend gave me this plant 14 years ago.
I have always think it was a kind of Helianthus.
My search to identify it brings me to think it is Rudbeckia lacianata "Goldquelle". But it told to grow 90 cm high. Mine is actually 230 cm high.
Please, help me. I try to identify all it is growing on my land (flowers, trees, weeds, etc.)
Pictures show lower leaves, intermediary leaves, and flower.

[gote]

That is a rudbeckia OK.
I do not know its specific name but it must have been around for a century at least. I have inherited it from my grandfather and I have seen it in a Japanese backyard. You have it in Qubeck
It can be rather overwhelming and needs staking so it is perhaps not very popular these days. If I remember I will look in some old garden book.
Göte

 

[Blue-bellied Frog]

Thank you Göte,
Despite a very rainy July, this Rudbeckia stand very well without stake, and my other Rudbeckia laciniata too.

[Maggi Young]

Bernard, I have today seen a Rudbeckia lacianata "Goldquelle" which was around 250cms high! I think the 90 cms is a mistake!! It looks exactly as your plant.

[Kristl Walek]

Bernard,
I know this plant as Rudbeckia laciniata (Golden Glow)...been around forever...and ever....

Also known as "the outhouse" plant" .....

Although I do not have one (an outhouse that is), my plants have been relegated to where the outhouse might be, in the rear of my property, as the spread of this plant is almost unstoppable...

[Blue-bellied Frog]

Merci Maggi and Kristl,
But I think we have to continue.
A lot of pictures on the net, show (Golden Glow) with a green center. My Rudbeckia posted here has a true "pompon" flower. (without a green center) It is invasive. (Named R1)

I have an other Rudbeckia laciniata, not yet blooming, but it is 210 cm height today, the leaves are  identical, except the stem length. It is absolutely not invasive.(Named R2)

My neighbour has a Rudbeckia lacianata blooming at 130 cm with different leaves but the flower look like my R2. This one is invasive. (Named R3)

Sorry, I did invert  R1 and R2 leaves
Ashamed Frog

[Blue-bellied Frog]

Two pictures showing difference between leaves at the intersection of new stem.
R1 has a leave-stem.
R2 has no leave-stem and leave lightly envelope the new stem