Thanks @hamwild
They do look different! The n.rudibuenekeri is the only consistent one I see that looks like mine
http://cactiguide.com/cactus/?...

Lovely pics by the way and you got seeds

@syzone8aUK
Oh my, I am confused now. Notocactus rudibuenekeri and N. scopa look very similar... maybe I am mislabeling mine as N. scopa! I need to figure out the differences, as their flowers look similar too. Thank you for sharing the name, I may have told you the wrong name after all.

@hamwild I read N. Rudibuenekeri is in the same subgenus scopacactus.
I wasn't fond of the N.scopa flowers but I do like it :)
I noticed 2 distinct differences in the flower you can see better here:
http://www.cactus-art.biz/sche...

http://www.cactus-art.biz/sche...

for the links and information! Oh my. Mine doesn't look like N. scopa when looking at those pictures, there's no red present on the spines. I mislabeled it and told you the wrong information. I find it frustrating that when I googled N. scopa, they had pictures of N. rudibuenekeri.

I think the colour of the centrals can be either white or red on the n.scopa @hamwild.. it just says often with red centrals!

And to make things even more confusing google parodia scopa ssp rudibuenekeri

Oh word, they put both names together too.

Been watching my Senecio articulatus this winter season, finally understood that it is actively growing here around the cold season, though I have this one indoors. Love seeing new leaves on all the new growth which are usually roundish shapes but this time, I have been attentive in giving it good watering intervals, so the new growth is in various elongated shapes and new leaves on them:

I have this one and the variegated one growing in my greenhouse. They are so happy, that it is starting to grow everywhere. A piece will fall off and it immediately roots and starts growing. I used to think it was a hard to grow plant, but it's becoming invasive for me.