Thanks all, for the warm welcome ! Plant people are so nice. Thanks Greg, for all the links and info, I'll be viewing them all soon and appreciate all the help. I will post pics as soon as I can get them together and see what you all think, but promise to not going around saying they are a certain subspecies, unless I have a labelled plant, as I got the point about never being sure unless you are sure.
It reminds me of what somebody told me once was the universal answer to any engineering question "It Depends".
Point well taken.
I just discovered (I searched "semp" looking for this forum) some areas on the site here that have tutorials and other useful info. I have a lot of reading to do -this will be great fun. Thanks everyone !