OH I forgot to mention.
while we were making our way out of PS
we came across this book fair.
so I randomly flipped open a p5 science assessment book.
there, they had a graphic illustration of the following:


(image,minus the drawing, taken from somewhere on google.)
sorry for my bad drawing, the part with R is supposed to be the underside of the fern.
so I asked, as in the book, "what's R"

nicholas: stomata
daniel: chlorophyll
me: SPORES LAR

tsk.