I think. I’m pretty sure. Genus Ilex. In the Aquifoliaceae family. An interesting photo at PhytoImages shows mistletoe and holly side-by-side. They are sometimes confused, but here they look pretty different, http://phytoimages.siu.edu/imgs/paraman1/r/Aquifoliaceae_Ilex_sp_16849.html
(Check out the date that photo was taken. Seasonally appropriate for the mistletoe!)
Retired economics professor (“dismal scientist”). Married 40+ years to the love of my life; we have two grown daughters, both married, two granddaughters and a...