Polygonum humifusum Merch ex K. Koch ssp. caurianum (B.L. Robinson) Costea & Tardif
Annotated by B.A. Bennett, 2005.

Yukon Territory: Bonnet Plume Drainage, Quartet Lake, camp. Elev. 2028'
65.1202849°, -134.4530434°
Muddy gravelly areas along shore. In rich humus in cobbles with Primula incana, Parnassia palustris, Arnica angustifolius, Deschampsia caespitosa, Equisetum palustre, and Ranunculus flammula. Found on exposed shore below seasonal high water mark. Flowers purple tinged, anthers yellow, some leaves paired at upper part of stem. Growing around northwest edge of lake. Occasional. Previously identified as Polygonum caurianum B.L. Robinson. Previously identified by B.A. Bennett, 2005. 1 duplicate (DAO; ALA).

B.A. Bennett 05-0338, July 8, 2005
With P. Seccombe-Hett, S.W. Thompson, D. Mahoney
BABY, Accession: BABY-05202, Genetic barcoding: CCDB-18333-D5