Hippeastrum mandonii creeping stem

Hippeastrums  have two usual ways to propagate. They propagate themselves by seeds and offsets.Some primitive species has creeping stem to propagate themselves. It is different from Griffina espiritensis. Griffina espiritensis grows small bulbs from a random point of a root. Hippeastrum mandonii grows a creeping stem which looks like a root from the bottom of the bulb. And then the creeping stem develops a small bulb at the end. When the small bulb forms well, the bulb starts to leaf. The bulb will root when it detects humidity and it can absorb water and nutrition. Finally, it becames an indivual plant..