Crownvetch is a low-growing herb that when flowering (May to August),
is easily recognized by the contrasting pink and yellow faboid-like flowers.
A few traits that distinguish this species from other similar pea-like
species include compound leaves with an odd number of leaflets, flowers
and leaves that arise from the main stem, and flowers That are in the
form of an umbel.
Crown-vetch, which is origionally from Eurasia and Africa has been introduced
around the US for erosion control since around 1950. But, while many pea-species
provide great fodder for domestic animals, this species can be toxic.
It has large amounts of nitroglycerides, which when consumed in significant
proportions will cause slow growth, paralysis, or death (SEEPPC)