I have added some updates to my original article on Stephanotis floribunda (warning: Too Much Information, now over 19,000 words). The pictures are from the first re-flowering of my Stephanotis since I got it.
Most of the updates come from this Open Access article that expands the genus Stephanotis. Previously Stephanotis was only found on the island of Madagascar. Some of the new species now included in Stephanotis are found across Africa and Asia. Some of the authors are recognised internationally as the experts on the family Apocynaceae.
Liede-Schumann, S, Reuss, SJ, Meve, U, Gâteblé, G, Livshultz, T, Forster, PI, Wanntorp, L & Rodda, M (2022), "Phylogeny of Marsdenieae (Apocynaceae, Asclepiadoideae) based on chloroplast and nuclear loci, with a conspectus of the genera" Taxon (2022) 71(4): 833-875 https://doi.org/10.1002/tax.12713 Accessed 6/10/2022
The photos of my Stephanotis flowers are all from the 14th of August 2022. It had taken a long time to flower again after I bought it in January 2020. The flowers and leaves were larger the second time.
The larger flowers may be because commercial nurseries often use a dwarfing chemical such as paclobutrazol. This chemical reduces the length of vine between the leaf nodes, making the plant more compact and saleable.
The flowers that it had when I bought it were about 3cm in diameter and 2.8cm long. The new flowers were 3.5 cm in diameter and 3 cm long. The leaves were much bigger and the leaves set much farther apart.
For the new species now included in Stephanotis, see https://pattheplants.blogspot.com/2020/02/belataky-stephanotis.html#NewSpecies
Dregea floribunda is now called Stephanotis ernstmeyeri. For the confusion over Dregea floribunda, Marsdenia floribunda and Stephanotis floribunda, see https://pattheplants.blogspot.com/2020/02/belataky-stephanotis.html#Confusion