This section is from the book "Handbook Of Hardy Trees, Shrubs, And Herbaceous Plants", by W. Botting Hemsley. Also available from Amazon: Handbook of hardy trees, shrubs, and herbaceous plants.
If we except Narthecium ossifragnm, sometimes referred here, and mentioned by us under the Liliaceae there are no hardy ornamental species belonging to this order. And we merely mention it to point out the difference between these and the essentially glumiferous plants. We have here a regular 6-partite perianth in two series, but the segments are either green or brown and inconspicuous. The fruit too in the indigenous genera Luzula and Juncus is capsular, either 1-celled and 3-seeded, or 3-celled and many-seeded, and the leaves flat or fistular.