Plantain comes in all sizes and I have so much fun finding it nearly everywhere I go! I've seen plantain with leaves as small as a quarter before, growing in the cracks in the sidewalk! Plantain is very distinctive because all of the leaves have prominant veining that runs vertically, whereas most other leaves in plants have a main central vein with other veins branching off of it.
My little plantain story: When the NGJ herb lesson on plantain came out, it was the month of May. I searched high and low for plantain out there and wasn't sure if I had found it or not because all of the leaves were so tiny. (Living in northern Minnesota, it makes a lot of sense that the plants were still babies then, seeing as how we still had frost in June!

Anyway, I found a book at the library about edible plants and herbs in Minnesota and Wisconsin and found a great picture of plantain. My husband and I were out visiting friends and while leaving there apartment complex, their landlord hadn't mowed the grass at all and the weeds were very high. I found what was certain to be plantain in bigger, bushier leaves and I've been seeing it ever since! It likes sunny, open areas, but you'll want to be careful where you gather it. Try to find it in a place where it isn't exposed to car exhaust, pesticides, or animal excrement.
Happy hunting!
PS - I just went out in the snow and took a couple of photos of baby plantain, but I can't figure out how to post them.

Sorry! I tried!