I went up near max patch two weekends ago and saw some really great wild trillum patches. At the lower elevations I saw plenty of ‘white’ trillium, which I believe is called ‘Trillium simile’ or ‘Sweet White Trillium’, http://utc.usu.edu/factsheets/trillium/trillium_simile/trillium_simile.htm .
At higher elevations I saw trillium with a burgundy color, called ‘Trillium erectum/Red Trillium’ - http://utc.usu.edu/factsheets/trillium/trillium_erectum/trillium_erectum.htm