If it's really small (4-6 inches) it might be Sheep Sorrel, Rumex acetosella. (There's a picture of the flower at the bottom of the link.) WW Here is a link that might be useful: Sheep sorrel

Full disclosure: I've eaten it myself several times. Another option is to taste it and then spit it out. But if it's going to be scary or uncomfortable to you, just skip it. It's not so great that you are going to be missing anything. Enjoy the smell instead. Do be very sure of the ID first before nibbling.. -------------------------------------------------------------------------------------------- For those curious about the potential toxicity, links below. http://www.fda.gov/Food/FoodborneIllnessContaminants/CausesOfIllnessBadBugBook/ucm071047.htm "Reports of acute poisoning in the United States among humans are relatively rare. Most result from the use of medicinal preparations as home remedies. ... Home remedies and consumption of herbal teas in large quantities can be a risk factor and are the most likely causes of alkaloid poisonings in the United States." Toxic dosage info on pyrrolizidine and case history here; no cases reported from this particular plant. Not all pyrrolizidine alkaloids are toxic to humans; this is not a plant which is *known* to be toxic, but several closely related plants are so it's probably best to be conservative. http://www.itmonline.org/arts/pas.htm

Arum italicum. Around here, it spreads easily but is a tough one to get rid of. Make certain you want it. If not, start digging now.

To be a bit more specific than Tiffany, the bottom one is a red maple, Acer rubrum. The top one looks to be a birch, and probably a gray birch, Betula populifolia, though I am not positive on that ID.