Thank you for your post and infomration. I have found your old post some time before and already seen the interesting report about R. nubigenus from 1920. But I did not know the newer reort from 2017 - so thanks a lot for this link - with this Report the first time I have seen this plant and the fruit in colur! I will Keep on searching dor it an Keep you informed if I will dind it one day. Concerning the size of the grains...I can imagine that eatin of raw fruit with great grains is not so comofrtable and agreeable - I made a similar experience by eating the Claoudberry (Rubus chamaemorus) the grains in the Pulp can be really a uncomfartble by eating the fruit....- common Rubus fruits like Blackberries or Rhaspberries do not show such a problem! But the Pulp can be separated from the grains of course. We will keep staying in contact concerning this item, okay?