Helwingia! It has epiphyllous (growing from the leaves) flowers.
Two different Hoya spp. They are vines.
Tea plant! Camellia sinensis. The flowers don't smell that great.
I don't know what it is, but it's leaves have parallel veins, and it smells great!
This is a Gnetumgnemon fruit. They are tropical evergreen gymnosperms.
And this is a male Gnetum gnemon showing off it's naughty parts. The tree grows nearly to the roof of the greenhouse, and this is the first time it has produced an influorescence, allowing us to determine it's sex.