Hi, I'm Lucy aka Larke, but not sure what you're asking... if it's which variety of Serissa you have, I can only guess that it's Japonica if it's not smelly. If you're asking something else, let me know.

Thank you, Lucy/Larke for the quick reply. What I mean is, the encyclopaedia says that there is only one species of Serissa in the genus, and that it has two names, either Serissa foetida or S. japonica, i.e. that they are the same plant. But I rather tend to think you are right when you say there are different specii, because my plant has no foetid smell from it anywhere.

Oh, I had not actually heard (only one type), and don't actually "know" if there is just one or not, but it seemed worth a shot :-).

Over the years I have found 2, one is serissa f. the other may be (and I believe it was marked serissa j) the Japonica. It has a leaf a little smaller and verigated on the margin, obelate in shape. The flower is of the same shape but pink to purple in color. There was no 'smell' as with the serissa f, which I found very minimal in most of them. The verigated variety is very weak most of the time, almost any change in it's environment will cause death.

Bob (who is still AKA: Bob)

Just because one smells and one does not, does not mean they are two separate species. It could just be a variation. To determine if they are the same species or not, breed the two plants, plant the seeds and if you get fertile offspring then they are the same species.

I would guess its just a variation, sometimes referred to as a subspecies.

larke, head cutter and botanical bill, thank you all so much for giving such consideration to my question and replying. I take on board re. the different varieties, so there probably is just the one species.
I enjoy all your posts, and would like to wish you and all here a lovely, happy Easter and lots of pleasant hours with your trees.