I want to make a T-label to identify a specimen of the ground cover lippia repens but I'm unfamiliar with methods of nomenclature. As far as I know one gives the common name and the "scientific" name, for instance:

BLUE GRAMA
or
MOSQUITO GRASS
Bouteloua
gracilis

So I googled lippia repens but I was so overwhelmed by the taxonomy, eg,

http://zipcodezoo.com/Plants/L/Lippia_repens/

....that I have no idea whether lippia replens is really its "common" name or how the technical term (genus? species? phylum? subclass? etc etc) is usually derived so I hardly know where to begin. How would you suggest I label it? Thank you most kindly

dalehileman