My understanding is that a true landrace will be stable. Also, >1% THC implies chemotype II, aka 1-to-1 strain.
Thanks for mentioning Lebanese, El G, because it reminded me of
HSC's Willy G's Lebanese. Sadly, it seems not available anymore. But Willy G's was bred from specific Lebanese phenotypes.
So, I'm a bit mystified, because Lebanese is known to have a "low level of genetic variation," yet the cannabinoid profile seems quite variable. Does this mean that it has known phenotypes and rarely ever throws variations beyond those known phenotypes? I'm guessing so.
We can see on Phylos that
Lebanese (ACE Seeds) has a low level of genetic variation, but is not a pure landrace – it has landrace genetics, but also hemp, berry, and CBD. To me, this explains the genetic variation w/ cannabinoids, etc. (i.e. different phenos). By the way, Lebanese is a strange one... semi-autoflowering.
We can see on Phylos that
Colombian Gold is a pure landrace, with the lowest possible genetic variation. I'm guessing true Colombian Gold will have just one phenotype, and consistent characteristics: plant structure, cannabinoids, terpenes, resistance, etc. (El G, check out the relatives on that Phylos Colombian Gold page.)