If I still lived in NM I would say whatever bush or weed that produces goatshead stickers or burrs. Lord I tore up my bare feet on those and always had to pull them out of the dog's paws.
Funny story about us Connecticut people who moved to NM. Mom was a canner--of everything! So when we moved to NM, we rented at first so the parents could house hunt and our rental home was right on the border of a huge expanse of undeveloped desert filled with prickly pear cactus. She had us out there the first week in the state, with 5 gallon buckets, leather work gloves and bbq tongs picking the ripe cactus pears so she could make jelly! Not sure what the locals must have thought of the new neighbors:lol: