A number of Sans are in bloom, but not sure of the name of this one where the flower is difficult to see against the sky (it is in the upper middle). Yale
Looks like it's going to be a beauty, I especially like its arching form. It's a type of S. Cylindrica (sorry if that's obvious, but you did say you didn't know). Which I don't know, as I believe there are a few at least.
I currently have one which is ridged like that which I've grown from a single leaf (it's got its 1st new leaf).
The Cylindrica I saw in bloom in Calif in 2001 (indoors) was quite large & incredibly fragrant in bloom. I literally followed the smell across a home I was visiting 'til I found the source, a HUGE pot of them in a bedroom, next to a sliding glass door. So cool.
Hope you'll favor us w/ more pix when it opens & let us know if it too is fragrant.
Sorry I don't have a more specific name for you.
A better vier of the same plant. Yale
I believe this is actually a suffruticosa.
It is beautiful.
I have a very small one.
I can't wait (I know I must) until it gets so large!
Another one, blooming at the same time, with 6 flower spikes, and now bearing several seeds. Yale
Love them, wish I could sniff!
Now have several seeds, most from S. ehrenbergii. Still green but a couple of months old. Will send some out, if anyone wants to experiment. It is hard to say what you will get, if anything from a seed. Yale