SEDGE FAMILY. 



2. KYLLINGA Rottb. Descr. & I c . 12. pi. 4 / - 

 Annual or perennial sedges, with slender triangular culms, 'leafy below, and wit* a or 



head at maturity consisting of only 3 or 4 scales, V , or ower 

 he middle one fertile, the upper empty or staminate. JoinU of the r^htowfa 

 owly winged. Scales 2-ranked, keeled. Perianth none. SUmen. ,-3 9 

 eciduous from the summit of the achene. Achene lenticular or 3-analed. 

 eter Kyllmg, a Danish botanist <?f the seventeenth century 1 



V 



\ 



M 



i. Kyllinga pumila Michx. Low 

 Kyllin-. . . 575.) 



A'rllingia pumila Mulix Ft Bor. Am t * 

 1803. 



Annual, culms densely tnfled. filiform. 

 erector reclined, 2'-i.s' lon k '. mostly longer 

 than the leaves. Leaves light green, rough- 

 ish on the margins, usually less than 

 wide, those of the involucre 3-5, elongated. 

 spreading or reflexed; bead oblong or ovoid- 

 oblong, 3"-4" long, simple or commonly 

 with i or 2 smaller ones at the base; spike- 

 lets about i#" long, flat, i -flowered, the j 

 empty lower scales more or less perstaenl on 

 the rachis after the fall of the rest of the 

 spikelet; scales ovate, acuminate or acute. 

 thin, about 7 nerved; stamens a; stvle j-clcA; 

 achene lenticular, obtuse. 



In moist or wet soil. Virginia to Florida, west 

 to Illinois, Missouri, Texas and Mexico. Au 

 Sept. 



3. DULICHIUM I,. C. Richard; Pers. Syn. i: 65. 1805. 



A tall perennial sedge, with terete hollow jointed culms, leafy to the top. the lover 

 leaves reduced to sheaths. Spikes axillary, peduncled, simple or compound. Spikelets 

 2-ranked, flat, linear, falling away from the axis at maturity (?) many-flowered. Scale* 

 2-ranked, carinate, conduplicate, decurrent on the joint below. Flowers perfect Perianth 

 of 6-9 retrorsely barbed bristles. Stamens 3. Style 2-cleft at the summit, persistent as a 

 beak on the summit of the achene. Achene linear-oblong. [Name sax! to be from f>ukt- 

 chimum, a Latin name for some sedge.] 



A monotypic genus of eastern North America. 



i. Dulichium arundinaceum (L.) 

 Britton. Dulichium. (Fig. 576.) 



Cyperus arundinaceus L. Sp. PI. 44. 1753. 

 Cyperus spathaceus L,. Syst. Ed. 12, 2: 735. 1767. 

 Dulichium spalhaceum Pers. Syn. i: 65. 1805. 

 Dulichium arundinaceum Britton, Bull. Torr. 



Club, 21 : 29. 1894. 



Culm stout, i-3 tall, erect. Leaves num- 

 erous, flat, i / -3 / long, 2 // -4 // wide, spreading 

 or ascending, the lower sheaths bladeless, 

 brown toward their summits. Spikes shorter 

 than or the uppermost exceeding the leaves; pe- 

 duncles 2 // -i2 // long; spikelets narrowly linear, 

 spreading, 6 // -i2 // long, about \" wide, 6-12- 

 flowered; scales lanceolate, acuminate, strongly 

 several-nerved, appressed, brownish ; bristles of 

 the perianth rigid, longer than the achene; 

 style long-exserted, persistent. 



In wet places, Nova Scotia to Ontario and Min- 

 nesota, south to Florida and Texas. Aug. -Oct. 



