TaxonRemarks USFS checklist has two varieties, neither of which could I find any significant mention of elsehwere. FNA map suggest ''C. bicolor'' does not occur in Southeast Alaska.
From Natural History of Southeast Alaska
A list of all pages that have property "TaxonRemarks" with value "USFS checklist has two varieties, neither of which could I find any significant mention of elsehwere. FNA map suggest ''C. bicolor'' does not occur in Southeast Alaska."