Mountain Woodsorrel (Species:Oxalis montana)

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Order: Oxalidales
Family: Oxalidaceae
Genus: Oxalis
Species: Oxalis montana

More info:

Oxalis montana is a species of flowering plant in the Oxalidaceae family known by the common names mountain woodsorrel, wood shamrock, sours and white woodsorrel. It may also be called common woodsorrel, though this name also applies to its close relative, Oxalis acetosella.

Mountain Woodsorrel