The humble Thale Cress
reproduces quickly and bountifully
in small spaces
and
due to the handy size of its genome
it has become the banana fly
among flowering plants
Arabidopsis thaliana 
Backtrav i januari, i maj och i november
Eva Ekeblad, 2001
Oh! I almost forgot: this is another one I would not have been able to identify without the help of Erik Ljungstrand.