Whistler was clear cut twice in succession. So it is not an old growth rain forest with 1,000s of species, but a mere plantation with only 100 species. The Oregon Grape "Mahonia aquifolium" (AKA hollyleaved barberry) and Highbush Cranberry "Viburnum opulus" were accidentally re-introduced as escaped landscaping plants, and may all be Oregonian Subspecies. All the wild Pacific crabapples "Malus fuscawere" AKA "Pyrus rivularis Douglas" and AKA "Pyrus fusca" were dug up by Pemberton Pioneers for grafting Rootstock. It is unclear whether the Chickasaw Plum, "Prunus americana" was indigenous, or introduced by Indigenous Transcontinental Trade Networks or later Western Contact. All the wild Plums were dug up too by Pemberton Pioneers for fruit trees to transplant and as rootstock. Once abundant on the forest floor, Lingonberry "Vaccinium vitis-idaea" is no longer found because of the loss of habitat through the clear-cutting.