To understand means to simplify. (RussianПонять - значит упростить) [From Strugatsky's SFnovelВолны гасят ветер (Waves blow out the wind, translated to English as The Time Wanderers)]
... parts of the mountains are the Siberian rampant cedar[?] (Cembra pumila) and the Kurilian bamboo[?] (Arundinaria kurileif sc). Birch, both European[?] and ...