Juncaceae: Rush Family
“Reeds and rushes are round but sedges have edges.” Like many popular sayings, this has a degree of truth in it but it is not infallible. Reeds and rushes vary from having cylindric stems that accord with the saying to having grass-like leaves (oriented with their flat side towards the stem) or iris-like leaves (oriented with their edge towards the stem). Some have comparatively stiff leaves, others have softer, floppier leaves. A little attention to these details can help the identification process since the difference between the flowers and fruits can be subtle.