Pl.end.ph, 9. CYPERACEiE. 40. Scirpus, 75 
Scirpirs palustris altissimus, Raii Syn. 423, 1. 
Juncus aquaticus maxitnus, Ger.em.35. 
Juncus laevis maximus, Park. H9i. 
Scirpus $ 1, No. 1, Mich. N. P. G. 49, 
Scirpus lacustris, Lin. S. P. 72. 
Bull rush. 
Rivers and large pools ; perennial ; J uly. 
Root horizontal ; culm upright, 6 feet high, dark green, 
spongy; sheaths alternate, submembranaceous, brownish; 
branches of the panicle unequal ; bractece 2, lanceolate, 
shorter than the panicle ; upper bractece many, small, placed 
next the panicle; spikelets crowded, brownish; glumes 
keeled, edge fringed. 
6. Scirpus medius. Middling rush . 
Culm round, smooth, glaucous; panicle scarcely branched; 
spike ovate ; bractece 3, lower erect, leaflike, 2 upper mem- 
branous, equal, prickly, as long as the panicle; stigmata 2. 
Scirpus q. Juncus sive Scirpus medius C. Bauhin, Raii Syn. 428,2. 
Scirpus laevis vulgaris, Park. 1 191. 
Scirpus § 1, No. 2, Mich. N. P. G. 50. 
Scirpus Tabernaemontani, Gmel. FL Bud. 1, 101. 
Scirpus palustris /3, Smith FI. Brit. 52. 
Scirp.us glaucus, Eng. But. 33, 2321. 
Less Bullrush. 
Pure waters; perennial; July. 
7. Scirpus carinatus . Ridged rush . 
Culm below round, above 3-sided ; panicle nearly simple ; 
spike ovate; bractece prickly; stigmata 2; sheaths acute, 
leafless. 
Scirpus q. Juncus aquaticus medius, caule carinato Doody, Raii Sym. 
428, 3. 
Scirpus lacustris y. Smith FI. Brit. 52. 
Scirpus Davilis, Hoppe in Strum. Germ. 36. 
Scirpus carinatus, Engl. Hot. 28, 1988. 
Banks of rivers; perennial; August. 
Upper bractece 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; bractea 1, leaflike, upright, longer than the spike. 
Scirpus q. Juncus acutus maritimus, caule triquetro maximo moili, pro- 
cerior nostras Plukeneti, Raii Syn. 428, 4 
Scirpus mucronatus j8, Huds. FI. Ang. 20. 
Scirpus triqueter a. Smith FI. Brit. 55. 
Scirpus triqueter. Withering. Bot.Arr, 78. 
Sea-shore and river-banks ; perennial ; August. 
