CTPERACEJE. 



407 



1. C. sTRico'sus. Bristle-spiked Galingah. 



Stem triquetrous, leafy only at base ; leaves broad-linear, rough-margined, 

 about as long as the stem; umbel with elongated rays and oblong, loose 

 spikes; 5;jzAe/c<s numerous, linear-subuiate, spreading horizontally, 10 — 12- 

 flowered ; involucre of about 6 leaves, the 2 outer ones very long. Wet 

 grounds. Stem 1 — 2 feet high, bulbous at base. Umbel yellowish. Sept. 



2. C. REP ENS. Ed. C. phymatodes. Mith. 

 Root creeping, bearing small, round tubers at the extremities; stem 1 — 2 



feet hitrh, 3-angled, striate; leaves subradical, as long as the stem ; umbel 

 4_G. rayed ; rays often branched, bearing linear, obtuse spikelets somewhat 

 in 2 rows. Moist fields. N. Y. Very similar to the last. Aug. 



3. C. iNutta'llii. Torr. C. ccespitosus. Sprcng. 

 Stem acutely triquetrous, leafy at base ; leaves narrow-linear, nearly as high 



as the stem ;" WTriicHoose, subsessile, about 3-rayed ; rays short; invohiere 

 4-leaved, the 2 outer leaves very long ; spikelets very acute, linear-lanceolate, 

 fasciculate, brownish ; ac/t. oblong-obtuse. Marshes. Sept. 



4. C. dia'ndrus. Torr. C. bicolor. Bart. 

 Stem slender, reclining ; umbels sessile, 1 — 2-rayed ; rays unequal ; involu- 

 cre 3-leaved, the 2 outer leaves very long ; spikelets oblong-lanceolate, flat, 

 14 — IG-flowered, collected into capitate lascicles ; glumes acute ; stamens 2 ; 

 style 2-cleft ; acli. compressed. Marshes. Stem 8 — 12 inches long. Umbel 

 somewhat paniculate. Glumes chestnut-colored. Sept. 



5. C. FOCEFO'llMIS. 



Stem slender, 3 — G inches high ; corymb fascicled ; fascicles both sessile 

 and peduncled ; involucre of 3 very long leaves ; .<:pikelcts oblong, flattened, 

 reddish brown. Abounds in cold, wet, sandy places and road sides, forming 

 dense, turfy masses. July. 



6. C. klave'scens. Yellow Sedge. 



Stem leafy, triquetrous; spikelets linear-lanceolate, 1-5 — 20-flowered, in 

 fascicles of 3 or 4 ; involucre of 3, unequal leaves, longer than the spikes ; 

 glumes ovate, obtuse ; sti/le 2-cleft ; uclieninrn mucronatc, somewhat rugose, 

 dark brown. A comtnon sedge, about 8 inches high, in marshy grounds, with 

 yellowish green spikes in a terminal umbel with unequal rays. Aug. Sept. 



7. C. dk.via'tus. Torr. Dentate Sedge. C. parviflorus. Muh. 

 Stem leafy at base, triquetrous ; umbel compound, 6 — 10-rayed ; involucre 



of 3 unequal leaves, longer than the umbel ; spikelets 3 on each peduncle, 

 ovate, flat, 8-flowered ; ^glumes acute, spreading at the points like teeth; 

 styles 3-cleft ; aclt. triangular. Marshes. Stem about a foot high. Sept. 



8. C. inkle'xus Mx. C. uncinatus. Ph. 

 Stem setaceous, leafy at base, 2 — 3 inches high ; leoves equaling the stem ; 



U7nbel 2 — 3-rayed, or conalomerate and simple ; involucre of 3 long leaves; 

 fp^7;c'e^s oblong, 8—1 2-flowered, 10 — 20 together, densely crowded into the 

 ovoid heads ; glumes yellowish, nerved, squarrose-uncinate at tip ; stamen 1. 

 Banks of slre;ims. Aug. Sept. 



9. C. mariscoi'des. Ell. C. filiculmis. Vahl. 

 Stem slender, 8 — 12 inches long, leafy only at base ; leaves mostly radical, 



carinate ; urnliel simple and sessile, or with 1 or 2 rays ; spikehfs linear-lan- 

 ceolate, 3 — 8-flo\vered, flattened when old, collected into globose heads; 

 glumes remote, loose, ovate, yellowish. Dry, rocky hills. Aug. 



2. MARI'SCUS. 

 Spikelets few-flowered, clustered in heads; glumes imbri- 

 cate somewhat in 2 rows, the lower ones short and empty ; 

 etamcns sometimes 2; style trifid ; fruit triquetrous, naked. 



