I've seen two different forms: a dwarf one (40/50 cm tall a bit more than 1 foot) and another one: more than 1 meter (more than 3 feet). You can see them in the wild: which one is the most common? The biggest or the smallest?
There is almost a variation for each african country.in the south- small plant, smaller blooms and less spotting. As you go up into africa the bigger the plant and blooms get with more spotting