Lapland buttercup —  Ranunculus lapponicus {crowfoot family — Ranunculaceae}
Flora of the Yukon Territory, Cody, p. 301b
Hippuris vulgaris; common mare's-tail;;  { 1/125 sec, f9.0} – {Paddys Pond/Ice Lake, Whitehorse, Yukon} – {30/06/07 Saturday, June 30, 2007; 3:41:06 PM}