Small hop clover is a tiny plant that has been referred to as the true shamrock. It is a rather weak plant that reaches a height of from two to ten inches. Branches are either upright or creeping. Leaflets are generally narrow and broadest near the tip, with the terminal leaflet on a short stem. Flowers are bright yellow and much looser in the cluster than other clovers. This spreading loose cluster is composed of form five to twelve individual flowers and is usually about three-eighths of an inch in width. Small hop clover is most common in the Northeastern states and states of the Pacific Northwest.