Here come the wildflowers! You can make informed identification of emergent wildflowers using the excellent guide provided by Tom Chester.  Here is a link to Tom's compilation of the morphology of baby annuals. It is outstanding and worth using (as is the entire site). 

Here come the wildflowers! Click on the (blue) link above to see what the "baby" wildflowers look like. Link:  http://tchester.org/bd/species/baby_annuals_morphology.html