THE SEDGE TRIBE 30; 



3. E. mullicaulis (Many-stemmed Spike-Rush).- Smaller than 

 E. palustris stems more slender, often barren and leaf-like ; 

 spikelets rather small ; style usually 3-branched. Marshy places ; 

 frequent. Fl. July, August. Perennial. 



4. E. acicularis (Least or Slender Spike-Rush). A slender little- 

 tufted plant scarcely 2 inches high ; stems needle-like, most of 

 them bearing a single terminal oblong spikelet which is scarcely 

 \ incli long and dark brown ; style 3-branched. Damp, sandy 

 places ; rather common. Fl. July, August. Perennial. 



3. Scirtus (Club-Rush) 

 S pikelets 2 to many ; bristles 6 



1. S. marilunus (Sea Club-Rush). Stems sharply triangular, 

 2-5 feet high ; leaves flat, pointed, often longei than the stem- ; 

 spikelets about I inch long, 2 or 3 in a sessile cluster, or 8-10, the 

 inner sessile and the outer stalked ; outer bract long, leafy ; some- 

 times 1 or 2 other shorter leafy bracts are' present. Salt marshes ; 

 common. Fl. July, August. Perennial. 



2. S. sylvaiicus (Wood Club-Rush). Stons triangular, 2-3 feet 

 high ; leaves long, grass-like ; spikelets very numerous, about inch 

 long, in clusters of 2 or 3, forming a large terminal compound 

 umbel or panicle, with 2 or 3 leafy bracts at the base. Moist woods 

 and grassy banks of rivers ; frequent. Fl. July, August. Peren- 

 nial. 



3. S. triquetcr (Three-edged Bulrush). Stems shar] ly triangular, 

 2-3 feet high, leafless, but the few loose sheaths at the base have a 

 short blade ; spikelets 8-10 or more, the central ones sessile, the 

 outer stalked, the whole forming a lateral umbel or cluster, the 

 stiff triangular outer bract often projecting 1 or 2 inches beyond ; 

 style 2-branched. Muddy banks of tidal rivers ; rare. Fl. August, 

 September. Perennial. 



4. S. pungens (Sharp Club-Rush). Rather smaller than S. tri- 

 quetcr, and 1 or 2 of the sheaths bear narrow keeled leaves 1-3 

 inches long ; spikelets few, all sessile, forming a close cluster. Bogs 

 and margins of ponds in Jersey. Fl. June, July. Perennial. 



5. S. lacustris (Common Bulrush). Stems stout, 2-8 feet high, 

 cvlindrical at the base, tapering upwards, sometimes obtusely tri- 

 angular near the top, bearing 1 short leaf near the base ; spikelets 

 rather numerous, J-| inch long, in a lateral cluster, the outer bract 

 continuing the stem ; style 2- or 3-branched. Margins of ponds 

 and rivers ; common. Fl. June, July. Perennial. 



6. S. T abemcemontani (Glaucous Bulrush). Differs from S. la- 

 custris in having glaucous stems and the glumes are furnish^H with 



