| A shade-tolerant/intolerant, submontane to montane, Pacific North American parasite. Occurs in maritime summerÂdry cool mesothermal climates on nitrogen-poor soils. Its occurrence decreases with increasing latitude, elevation, and continentality. Sparse in open-canopy, Douglas-fir forests on water-shedding sites. Parasitic on Gaultheria shallon. An oxylophytic species characteristic of Mor humus forms Source: Indicator Plants of Coastal British Columbia (Information applies to coastal locations only)
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