Dave, you said a mouthful about PA.
We got what is locally called by varied names in different locales.
We've got the marble sized round ones called "cockleburs" by some...then there are the triangle shaped things, fuzzy on both sides, we call, Velcro boogies", and then the long sticker things with prongs on the end, by which name I won't share, and the worse are these miserable tiny things that look much like a minature sycamore pod...those miseralble thing just burrow deeper in fleece as you pull on em! :(