8 samples of wild collected Rhododendron canadense have now been tested for ploidy level from central PA to eastern Nova Scotia and 6 places in between and all samples to date indicate that R. canadense is a diploid.
More testing is still needed but the evidence is starting to strongly suggest that R. canadense is normally a diploid and not a tetraploid as documented in much of the literature.
These findings are still considered inconclusive and only intended to reflect the on going status of a portion of the investigation into the ploidy level of populations of native R.canadense.
