i wasn't sure if it would have medicinal properties without a high thc content, but from my rudementery understanding of canaboids its the THC that gives the phsycodelic effect and the CBD that counters those with a fealing of calm . i recently watched a documentery where a scientist gave a patient pure thc and she was paranoid and a lil schizo, as opposed to the calm euphoria she felt when smoking some good weed
There are a limited amount of studies but what it is thought to be is that THC is the psychoactive chemical and other cannabinoids modify the effect of the THC. It's not cut and dry that high CDB or high THC content determines the quality of a strain but rather how their cannabinoids react together to produce a specific high that is seen in special plants.
I believe what your referring to is the original Cannatonic, this thread is about Cannatonic X, part of the CBD intense breeding by Resin Seeds and Mr. Nice Seeds.
heres a link to the lab that tested it http://www.micannalytics.com/results/sample.php?sampleid=110978&dispensary=77 the numbers are so weird i wonder if it was contaminated
THCA is tetrahydrocannabinolic acid, which is how most THC is present in fairly fresh cannabis andor hash. Heating will quickly cause the THCA molecule to extrude CO2, leaving THC. That is why smoking weed works, and why cooking with weed requires a hot step. If you ingest THCA, not much happens. cn
this is incorect, it takes longer because it's a fat soluable chemical and takes a long time to digest, the thc is already activated by the cooking process.
"Harlequin is one phenotype of a plant bred to produce hashish," explains Wade Laughter. "The genes are 75% sativa and 25 % indica. The Sativas include an early-1970s Columbian Gold, a Thai from the mountains near Laos, and a Swiss native land race that was bred for consumption of cattle. The Indica is from Nepal's Mustang state. These are all high-elevation plants....Harlequin is available as a clone at dispensaries in the Bay Area that are participants in Project CBD, including Sparc and the Vapor Room. The smell and taste are sweet with an almost syrupy heaviness that is pleasant on the inhale and the exhale. she needs about 60 to 70 days indoors to finish her full flowering. She sets flowers fairly quickly compared to other strains. I see fingertip-sized bud set at two weeks of flower —compared to pencil-eraser size in other plants at the same two weeks of flower. She really needs some way to support the colas the last few weeks because the trichomes and flowering tops get so heavy. Along those same lines, in a drying room where strains like Blueberry or Bubba Kush take seven to 10 days for drying before curing, the Harlequin can take as long as three weeks. She can be completely obscured by 'sugar' to where she looks 'frosted.'" 
i dont know about harlequin, but canatonic x is for sure here in MI. i'm not sure if the dispenserie was a part of the closings that swept the state recently, but find them on the catalynics website
Hello Brick Top,Google Project CBD and see if you can find out more.
Harlequin
"Harlequin is one phenotype of a plant bred to produce hashish," explains Wade Laughter. "The genes are 75% sativa and 25 % indica. The Sativas include an early-1970s Columbian Gold, a Thai from the mountains near Laos, and a Swiss native land race that was bred for consumption of cattle. The Indica is from Nepal's Mustang state. These are all high-elevation plants....Harlequin is available as a clone at dispensaries in the Bay Area that are participants in Project CBD, including Sparc and the Vapor Room. The smell and taste are sweet with an almost syrupy heaviness that is pleasant on the inhale and the exhale. she needs about 60 to 70 days indoors to finish her full flowering. She sets flowers fairly quickly compared to other strains. I see fingertip-sized bud set at two weeks of flower compared to pencil-eraser size in other plants at the same two weeks of flower. She really needs some way to support the colas the last few weeks because the trichomes and flowering tops get so heavy. Along those same lines, in a drying room where strains like Blueberry or Bubba Kush take seven to 10 days for drying before curing, the Harlequin can take as long as three weeks. She can be completely obscured by 'sugar' to where she looks 'frosted.'"
Cannabinoids in Harlequin Leaf?
Earlier this year Wilson Linker, a sales executive at Steep Hill Lab, tested leaves taken from a Harlequin plant about five weeks after it was started indoors from a clone. "Still completely in veg," he says of the plant. Linker took leaves from different various parts of the plant, ground them up, and tested them by GC/MS. To his surprise, the leaf tested at approximately 4% CBD and 2% THC (see illustration)
Linker repeated the test and confirmed the results with another Harlequin clone started the same day. Key questions will be answered by more testing: Do all Harlequin plants produce cannabinoids in the vegetative state? Do other CBD-rich strains have this trait?
"The true benefit," says Linker, "would be that you could extract the CBD in mid-summer, not wait for buds before harvesting. There's obvious implications for making edibles and tinctures. Imagine not having to deal with a harvest!"
http://www.projectcbd.org/StrainNotes/Harlequin/Harlequin.html
Links to other strains can be found using the following link.
http://projectcbd.com/Availability.html#Marketing