Snakeberry, Two-leaved Solomon's Seal or Wild Lily Of The Valley (Maianthemum dilatatum)

Maianthemum dilatatum is accepted species in  the family Asparagaceae  subfamily: Nolinoideae,  
Genus Maianthemum 
Infraspecific taxa recognized within : infraspecific taxa
This species is found in Alaska, Aleutian Is., Amur, British Columbia, California, Chita, Idaho, Japan, Kamchatka, Khabarovsk, Korea, Kuril Is., Mongolia, Oregon, Primorye, Sakhalin, Washington, Yukon.