. The book of grasses : an illustrated guide to the common grasses, and the most common of the rushes and sedges . ferentconditions of soil and climate the plantsvary in size and in the number of flowering-heads the stems are seldom more than fif-teen inches in height. POND SEDGE. {Dulichium) The Pond Sedge {Dulichium arundi-naceum) is a plant that bears little resem-blance to other members of the large familyof Cyperaceae, and the casual observer whoassumed the leafy stems to belong to someflowering plant of a different order mighteasily be pardoned. The hollow, jointedstems, one to three fee
. The book of grasses : an illustrated guide to the common grasses, and the most common of the rushes and sedges . ferentconditions of soil and climate the plantsvary in size and in the number of flowering-heads the stems are seldom more than fif-teen inches in height. POND SEDGE. {Dulichium) The Pond Sedge {Dulichium arundi-naceum) is a plant that bears little resem-blance to other members of the large familyof Cyperaceae, and the casual observer whoassumed the leafy stems to belong to someflowering plant of a different order mighteasily be pardoned. The hollow, jointedstems, one to three feet tall, are very leafy,but the three-ranked leaves are short, beingone to four inches long, and are notsedge-like in appearance. The flowersare borne with the leaves along the stemand are in spikes which are composed ofnarrow, green spikelets, one half to oneinch long. This plant, the only species of thegenus, is common from Nova Scotia toFlorida, and during midsummer and laterit is frequently seen by the borders ofponds and streams where it grows withthe yellow loosestrife and other plantsof the marshes. 270. Pond SedgeDulkhium Sleader Spike-rushEleocharis tsnuis 271 The Book of Grasses THE SPIKE-RUSHES. (Eleocharis) Shining, hair-like stems of Spike-rushes often cover the soilbetween clumps of coarser sedges, and in many places the LargeSpike-rush occupies low ground by streams and ditches where itsroots are sometimes under water. The smallest species are buta few inches in height, but the largest Spike-rushes are occasion-ally five feet tall. All are similar in appearance and are veryunlike other sedges. The round or four-angled stems are slender,usually rather soft or weak, and grow closely together, and theleaves are reduced to basal sheaths tinged with reddish flowers are always borne in a small, solitary spikelet whichcaps the stem, and in some species the spikelet is so narrow as tobe no wider than the stem itself. Under the lens a perianth ofbr
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