COSEWIC assessment and status report on the giant helleborine, Epipactis gigantea, in Canada

'Significant new survey information on Giant Helleborine has become available since the last Status Report update (White and Douglas 1998). Currently there are 23 subpopulations confirmed as extant, a 77% increase over the 13 reported by White and Douglas (1998). All but two of the 13 subpopulations reported by White and Douglas (1998) have updated observations as recent as 2010. The current status of two subpopulations— Naramata and Celista—is unknown”--Preface (p. x).