Lapland buttercup —  Ranunculus lapponicus {crowfoot family — Ranunculaceae}
Flora of the Yukon Territory, Cody, p. 301b
Hippuris vulgaris; common mare's-tail;;  { 1/100 sec, f5.6} – {Paddys Pond/Ice Lake, Whitehorse, Yukon} – {22/06/06 Thursday, June 22, 2006; 1:35:53 PM}