64. 33. Trasus. 9. CYPERACEiE. Plend.pk 



Woods ; perennial ; May, June. 



Culm 18 in. high, upright; leaves with long sheathsj 

 pale green; Iractece very like the leaves, sheaths shorter; 

 male spike terminal, linear ; glumes obtuse, ferruginous^ 

 rib green ; female spikes 3 to 5, distant, loose, erect, 2 to 

 S-floweredi fruit ovate, 3-sided, ribbedj longbeaked, apex 

 scariose, not notched. 



g. BractecB leafikei amplexicaul ; 



spikes upi'ight, upper sessile^ lower footstalked, male 2 or Si 



fruit smoot/u 



21. Trasus riparius„ Bankside sedgei 

 Male spikes 3-sided ; female spikes 3, cylindrical, narrow 



iat top ; ghimes as long and broad as the fruit, ovate^ acutcj 

 iiwned ; fruit ovalj manyribbed^ beak 2-forked. 



Gramen cyperoides cum paniculis nigris, Saii Syti, 417, polyst. 1. 

 Carex acuta a, Hiids. Fl. Ang, 413. 

 Carex ripaiia, Curtis Fl. Lond. 28 h 

 Great common cyperus grass. 



Banks of rivers; perennial; April, May. 



Root creeping; herb blackish green, rather glaucous i 

 culm acute-angled, 3 feet high, firm, upright; leaves in 

 tufts, broad, long; bractece very long, sheaths scarcely any, 

 ears rounded, pale: male spikes 3 or 5, close, upright, 

 (i-s'ided ; fe7nale spikes 3 or 4, cylindrical, thick, footstalks 

 long, lower sometimes hanging down; glumes awned; fruit 

 brown, spreading, beak very short* 



22. Trasus paludosuSi Bog sedgei 

 Male spikes 2 or 3, bellied; glumes hlimt; female spikes 3^ 



cylindrical, narrowed ; glumes lanceolate, awned ; fruit 



ovate, ribbed, as long as the glume, beak 2-toothed. 



Gramen cyperoides minus angustifoliiim^ Park. 1266, Kaii Syn, 418, 

 polyst. 2.* 



Carex acuta, Curds Ft. Lond. 4, 61. 

 Carex rufa, Lamarcke Enc. Meth. 3^S9i. 

 Carex paludosa, Goodenuugh L. T. 2,202. 

 Carex aculifoimis, Ehr. Gram. 2, 30. 

 Small common cyperus grass. 



Riversides; perennial; May. 



Root creeping; cz/Zm 2 feet high, upright, angles acute j 

 leaves very long, glaucous, upright ; bractece 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 ;^n«/ ovate, brown. 



