, is a creeper, growing close to the ground and forming tangled clusters of leaf stalks and flower stems. Flowers have the familiar pea-like structure, with a two-lobed petal at the top (the banner), and a hooded center of two smaller petals (the wings) enclosing two even smaller fused petals (the keel). Inner petals are whitish or light pink; the banner is dark pink and is crossed by prominent, lengthwise veins. Leaf stalks bear long, narrow leaflets at regular intervals, ending in a tendril which fastens on to adjacent stalks. There are two sub species: brachycalyx (Bonneville pea), found in parts of Nevada and northeast Utah, and the more common zionis, found in south Utah, west to New Mexico.