Hetty,
I know your right but when I first started in this forum I didn't know better. I wish I could meet with your Sans friend. I am only into Sansevieria Trifasciata. The one you showed looks like another spices. As your friend knows there are 70 spices and maybe 100's of cultivars from them. So many look alike that there is disagreement even by the experts. I have a friend who is sending me some other kinds this spring. Something new for me.
Zig,
How very lucky you are to be able to grow them year round outside. I would keep a look out for new pups that are different and cull out and grow on their own. You may discover a new cultivar. If so you have the right to name it. There is so much involved in it thro.
To all,
The original spices Sansevieria Trifasciata is the most strongest and toughest. The more yellow or white in the leaves, the more prong they are to circum to rot and failure.