Gemmae porduction is a form of cloning. Flowering allow sexual reproduction enable new sets of gene combination. The end result is better adaptiablily to the plants local climate.
While most species do not produce many seeds, they are viable and will germinate.
Make you think how harsh an enivorment these little fellas live in to need all these tactics to get though a year.
I brought some to work thinking that the air-con will help...and I end up having more deaths! Now I understand Khoas' "frightful death rate".