64 
33. trasus. 9. CYPERACEiE. 
PL end, phi 
Woods ; perennial ; May, June. 
Culm 18 in. high, upright; leaves with long sheaths, 
pale green ; hractece very like the leaves, sheaths shorter J 
male spike terminal* linear; gliimes obtuse, ferruginous* 
rib green ; female spikes 3 to 5, distant, loose, erect, 2 to 
5-flowered ; fruit ovate, 3-sided, ribbed, longbeaked, apex 
scariose, not notched. 
g. Bracfece leaflike> amplexicaul ; 
spikes upright , upper sessile , lower footstalked, male 2 or 3; 
fruit smooth . 
21. Trasus ripariusi Bankside sedge * 
Male spikes 3-sided ; female spikes 3, cylindrical, narrow 
at top ; glumes as long and broad as the fruit, ovate, acute, 
awned ; fruit oval, manyribbed, beak 2-forked. 
Gramen cyperoides cum paniculis nigris, Raii Syn. 417, polyst. 1. 
Carex acuta a, Huds. Ft. Ang. 413. 
Carex riparia, Curtis FI. Loud. 28 1 . 
Great common cyperus grass. 
Banks of rivers ; perennial ; April, May. 
Root creeping; herb blackish green, rather glaucous; 
culm acute-angled, 3 feet high, firm, upright; leaves in 
tufts, broad, long ; hractece very long, sheaths scarcely any, 
ears rounded, pale; male spikes 3 or 5, close, upright, 
3-sided; female spikes 3 or 4, cylindrical, thick, footstalks 
long, lower sometimes hanging down \ glumes awned ; fruit 
brown, spreading, beak very short. 
22. Trasus paliidosus . Bog sedges 
Male spikes 2 or 3. bellied; glumes blunt; female spikes 3, 
cylindrical, narrowed ; glumes lanceolate, awned ; fruit 
ovate, ribbed, as long as the glume, beak 2-toothed. 
Gramen cyperoides miuds angustifolium, Park. 1266, Raii Syn. 418, 
polyst, 2.* 
Carex acuta, Curtis FI. Lond. 4, 61. 
Carex rufa, Lamarcke Eric. Meth.3,394. 
Carex paludosa, Goodenough L. T. 2, 202. 
Carex acutiformis, Ehr. Gram. 2, 30. 
Small comrHon cyperus grass. 
River sides ; perennial ; May* 
Root creeping ; culm 2 feet high, upright, angles acute ; 
leaves very long, glaucous, upright ; hractece longer than 
the culm; male spikes 3 or 4, brownish black, glumes ovate, 
blunt, rib green ; female spikes slender, blunt; footstalks 
short; glumes lanceolate, acute; fruit ovate, brown. 
