Green common bush snap beans are also called string beans, stringless beans (depending on whether the pod has a tough, fibrous "string" running along its length), or snap beans. Compared to the dry beans, they provide less starch and protein, and more vitamin A and vitamin C. The green beans are often steamed, stir-fried, or baked in casseroles. The common bean is a highly variable species. Bush snap beans varieties form erect bushes 20 – 60 cm tall. All varieties bear alternate, green or purple leaves, divided into three oval, smooth-edged leaflets, each 6 – 15 cm long and 3 – 11 cm wide. The white, pink, or purple flowers are about 1 cm long, and give way to pods 8 – 20 cm long, 1 – 1.5 cm wide, green, yellow, black or purple in color, each containing 4 – 6 beans. The beans are smooth, plump, kidney-shaped, up to 1.5 cm long, range widely in color, and are often mottled in two or more colors. Varieties of the bush snap beans specialized for use as green beans, selected for the succulence and flavor of their pods, are the ones usually grown in the home vegetable garden, and many varieties exist, namely, Blue Lake, Kentucky Wonder, Roma II, Golden Wax and Green Crop. Pod colour can be green, golden, purple, red, or streaked. Shapes range from thin fillet types to wide romano types and more common types in between. French Haricots verts (green beans) are bred for flavorful pods.