1. Rare Plant Consortium, Department of BiologyCentral Washington UniversityEllensburgWA98926U.S.A.
2. School of Biological SciencesUniversity of Nebraska‐LincolnLincolnNE68588‐0118U.S.A.
3. Department of BotanyUniversity of British ColumbiaVancouverB.C.V6T 2B1Canada
4. Pacific Phytometric Consultants1531‐133B StreetSurreyB.C.V4A 6A5Canada