. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. CYPEBACEAE (sEDgE FAMILY) 191 1-5 ovoid aoutish spikelets ( cm. long); involucralleaf always erect; scales oblong-oval; style 2-cleft; bristles 1 or 2 minute rudiments or none; achene cuneate-obovate. â Wet shores, local, Me. to Pa., Ill, Mich., and Ont. July-Sept. Fig. 285. Var. set6sus Fernald. Perianth of 4 or 5 slender retrorsely barbed bristles, mostly exceeding the acheues. â Me. ; Mass. ; and 111. 12. S. americJnus Pers. Kunning root
. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. CYPEBACEAE (sEDgE FAMILY) 191 1-5 ovoid aoutish spikelets ( cm. long); involucralleaf always erect; scales oblong-oval; style 2-cleft; bristles 1 or 2 minute rudiments or none; achene cuneate-obovate. â Wet shores, local, Me. to Pa., Ill, Mich., and Ont. July-Sept. Fig. 285. Var. set6sus Fernald. Perianth of 4 or 5 slender retrorsely barbed bristles, mostly exceeding the acheues. â Me. ; Mass. ; and 111. 12. S. americJnus Pers. Kunning rootstocks long and stout; culms sharply S-angled through- out ( m. high) with concave Sides; leaves ââ, â â ...,. 1-;^, elongated (1-3 dm. long), keeled and chan- ' "â¢'="""''i>> neled ; involucral leaf pointed; spikelets 1-6, capitate, ovoid, mostly cm. long ; scales ovate, sparingly ciliate, 2-cleft at the apex; anthers tipped with an awl-shaped minutely fringed appendage; style 2-cleft (rarely 3-cleft); bristles 2-6, shorter than the smooth achene. (;S. pungens Vahl.)âBorders of '86 s americanus ®^^* ^^^ fresh ponds and streams, temperate N. A. " â â â Oct. (Eu., S. A.) Fig. 286. 13. S. Torrfiyi Olney. Bootstocks slender and weak; culm 3-angled, with concave sides, rather slender ( ), leafy at base; leaves 2 or 3, more than half the length of the culm, triangular-channeled, slender; involucral leaf blunt; spikelets 1-4, oblong or spindle-shaped, acute, distinct, cm. long; scales ovate, smooth, barely mu- cronate ; style 3-cleft; bristles longer than the unequally triangular very smooth long-pointed achene.âBorders of ponds, brackish and fresh, Me. to Pa., la., and Man. Aug., Sept. Fig. 287. (/'14. S. OlnSjd Gray. Culm S-wing-angled, with deeply excavated sides, stout ( m. high), the upper sheath bearing a triangular leaf or none; spikelets 6-12, closely capitate, ovoid, obtuse, over- topped
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