Life … Plants Vascular Plants Dicots Legumes, Milkworts, and Allies Legumes Sweet Peas and Vetchlings Seaside Pea Lathyrus japonicus parviflorus variety Lathyrus japonicus parviflorus Lathyrus japonicus parviflorus Key traits Layer Vines Plant type Perennial Vine Wildflower From USDA PLANTS. Close