Heres some good shots of my Pachypodium gracilius' These are the same age but have grown and look similar but definitely different from each other. One is shorter with much thicker branches and more round fatter caudex in a smaller pot and the other is taller has a more sloping caudex and more but skinnier branches. Both flowered this year! Was hoping for some more splits in the braching, A produced two from each branch, B only produced two from two branch ends and not all 4, probably due that it tried but unsuccessfully bloomed off two in transit down here.
P. gracilius A
P. gracilius B
Observations on growing down here. P. gracilius A seems to run though water much faster(caudex has some give after about 2-3days after watering), so its probably time for a repot, but i have over the years found that up-potting too much with this species hinders growth and caudex development, they seem to like cramped root spaces, this fits with how they grow in nature. This also helps in dormancy with soil not staying wet for extended periods of times. So I am going back and fourth on whether or not I will repot this summer, likely I will wait until spring right out of dormancy rather than repot in 100 degree weather, and just not make any changes this first season of adjusting to new environment. I believe this smaller root space could be why the two look so much different with the variation in pot size.
