|This genus contains mainly grass-like perennials that are native to to moors and bogs. Basal and stem leaves are flat and grooved and can be identified by their zig zag white margins. Cream colored flowers are held above the grass in panicles, corymbs or cymes. Grow in soil that is poor or only moderately fertile in part to deep shade. This plant can grow in full sun if soil is constantly moist. Rust may sometimes be a problem.