I have taken photos of the cannabis plants I smoked if anyone would care to host them. Yes, by all appearances the plants I took parts from would appear to be Cannabis sativa ditchweedis..there are no pronounced trichomes(glandular resin secreting hairs) on the leaves or stems, the plants are all female(no pollen sacs) and the buds (or carpels) are undeveloped. There seems to be no reason why these plants should have gotten me high, nevertheless they did. I have smoked several joints from these plants, and in one instance two large joints in succession followed by one bowl which I crafted from a beer can. In the last case I got VERY high, with intense time distortion, depersonalization, prolonged and "strobing" afterimages, sensory enhancement, major impairment of short term memory, patterns with eyes closed etc.. all consisten with a marijuana high. Also my HPPD worsened markedly for at least 3 days after smoking and I also felt very spaced out and depersonalized/derealized after smoking as well. I have done some research at the local medical library and the literature has shown that the THC content of ditchweed occasionally exceeds 1%, owing to mutations(this explains how the psychoactive properties of marijuana were first discovered by man; a mutant variety sprang up with greater than average THC content- all part of natural selection/evolution). Also, the THC content of marijuana prior to the 1970s was sometimes less than 1% and people still were able to be intoxicated by it..
If it's not a ditchweed strain, another possibility is that some vegetative cuttings were in a bag of low potency marijuana(government issued medical marijuana often contains less than 3% THC) and the plants are female clones.
Why did I smoke it?
1) To prove that ditchweed has no psychoactive properties whatsoever due to the high ratio of cannabidiol to delta-9-tetrayhydrocannabinol(THC)
2) I have suffered from LSD-induced HPPD for over 20 years now, with no improvement, in fact a worsening, in spite of having not used any psychedelic or hallucinogenic agent in 20 years, and I am tired of being a "good boy" with no reward for my abstinence.

3) I feel comfortable enough with my HPPD that I can handle the effects of mild psychedelics such as low-potency weed and absinthe. The data on this forum suggest that marijuana can be used occasionally by some HPPDrs without permanently making thier visuals worse.
4) I do enjoy the effects of mild psychedelics such as sensory enhancement, stimulation of creative thought processes, etc.. as long as they don't spin out of control. (I am afraid to try Salvia divinorum even though I can buy it legally in my state).