Plend.ph, 9. CYPERACE^. 40. Scirpus. 75 



Scirpiis palustris altissimus, Raii Syn. 4SS, 1. 

 Junciis aquaticus maximus, Ger.em.35, 

 Juncus lajvis maximiis, Park. 1191. 

 ScirpHs ^ 1, }io. 1, Mich. N. P. G. 49. 

 Scirpus lacHstris, Lin. S. P. 72. 

 Bull rush. 



Rivers and large pools ; perennial ; July. 



Root horizontal ; culm upright, 6 feet high, dark green, 

 spongy ; sheaths alternate, submembranaceous, brownish ; 

 branches of the panicle unequal ; Iractece 2, lanceolate, 

 shorter than the panicle ; i/pper bractem many, small, placed 

 next the panicle ; spikelets crowded, brownish ; glumes 

 keeled, edge fringed. 



6. Scirpus medius. Middlivg rush. 



Culm round, smooth, glaucous; panicle scarcely branched^ 

 spike ovate ; bracteoB 3, lower erect, leaflike, 2 upper mem- 

 branous, equal, pi'ickly, as long as the panicle ; stigmata 2. 



Scirpus q. Junciis sive Scirpus medius C. IJauhin, Raii Syn, 428, 2. 



Scirpus laevis vulpjaris, Park. 1191. 



Scirpus S I, No. 2, Mich. N. P. G. 50. 



Scirpus Tabernaeniontani, Gmel. FL Bud. 1, 101. 



Scirpus ])alustris /3, Smith Fl. Brit. 52. 



Scirpus glaucus, Eng. Bot. 33, 2321. 



Less Bullrush, 



Pure waters ; perennial ; July. 



7- Scirpus carinatus. • Ridged nisfi. 



Culm below round, above 3-sided ; panicle nearly simple ; 

 spike ovate; Iractece prickly; stigmata 2; sheaths acute, 

 leafless. 



Scirpus q. Jnncus aquaticus medius, caule carinato Doody, Raii Sun, 

 428, 3. 



Scirpus lacustris y, Smith Fl, Brit. 52. 

 Scirpus Davilis, Hoppe in Strum, Germ, 36. 

 Scirpus carinatus, Engl. Bot. 28, 1988. 



Banks of rivers ; perennial ; August. 

 Upper hractecE shorter than the panicle. 



8. Scirpus triqueter. Threesided rush. 



Culm 3-sided ; panicle cymose ; spikes sessile and pe-. 

 duncled ; spikelets ovate, crowded ; sheaths ending in short 

 leaves ; bract ea 1 , leaflike, upright, longer than the spike. 



Scirpus q. Juncus aciitus maritimtif, caule triquetro maximo molli, pro- 

 cerior nostras Plukeneti, Raii Syn. 428, 4. 



Scirpus mucronatus $, Huds. Fl. Ang. 20. 



Scirpus triqueter a, Stuith Fl. Brit. 55. 



Scirpus triqueter. Withering. Bot, Arr. 76. 



Sea-shore and river-banks ; perennial ; August. 



