I tought slightly in
Jatropha (
integerrima, of course, as other species are very different), but from the photos and videoclip it was not possible to be sure by far.
I also saw the
Costus leaves on the video, obviously different from the red-flowered plant leaves, but when I mentioned alternate (spiralling disperse) leaves I was referring to the ones of the red-flowered plant, very different from the clearly opposite leaves of
Clerodendrum.
By the way, how are you so sure that the plant is a
Jatropha from this clip? Did you had access to a checklist of the plants of this greenhouse, or did you saw the plant directly or something else?
Here is my image of
Jatropha integerrima that I've took at Berlin botanical garden.
@Sarus Crane this is the usual level of detail/cropping of images needed for identify plants.