I live in the region and i'm actually growing 2 very slightly different R2's right now and thought i would jump in on this thread. True R2 IS clone only, don't believe anyone who tells you otherwise, and i know enough that i would only trust the cutting if i got it from a french guy. My Acadian R2 is 2 weeks later to start flowering than the "R2" i got from an english dude in sackville. My english R2 is 5 weeks into flower today (Aug31) but my Acadian R2 is only 3 weeks into flower and the 2 are planted side by side in the same everything so there is no doubt some early cross around here. But R2's origin is simple. R2, R1, M39 and Friesland Indica (also called M33 in the catalogue) all came from the SSSC (Super Sativa Seed Club) as seed around 1989/90. You can google old pages of the SSSC 1988/89 seed catalogue and see a few of these strains listed and see that these alphanumeric names were catalogue numbers for crosses...like M39 is Northern Light #5 x Skunk #1. I have been told by people i trust on this that R2 is Northern Lights #2 (the rare NL) x Thai Haze x Afghani landrace. R2, R1, M39 and Friesland were all first grown in Quebec from what i know and then entered NB through the french acadian communities where it was grown for quite a while before entering the english side of NB and NS.