Merino wool is from a merino sheep--a particular breed. Peruvian wool? Probably from a 'regular' sheep that lives in Peru. There is a noticeable difference between merino and 'regular' wool--the merino is much softer.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog