Notes:
Damp soil in forest understory, along but back from wettest zone of stream in Picea engelmannii - Pseudotsuga menziesii forest with understory of Cornus sericea, Alnus incana, Cardamine cordifolia, Oxypolis fendleri, Prunella vulgaris; closest associates include Rubus parviflorus, Cerastium fontanum; stems decumbent to sprawling and matted; corolla white; occasional.