Oxalis ambigua leaves

The leaves of Oxalis ambigua are often at ground level, sometimes angled up on their stalks or on a stem of up to 10 cm. The leaf is trifoliolate, divided into three leaflets. There is a leaf petiole or stalk, the leaflets have no petiolules (stalks).

The central leaflet is larger, wedge-shaped to heart-shaped with slightly pointed or notched, sometimes flat tip. The smaller lateral leaflets are round-tipped. Leaflets margins are hairy, whitish or sometimes red, or with only a hint of red if not only at the base. The blades may be hairy, mostly not. In this photo the blades are flat (Le Roux, et al, 2005; iNaturalist).