. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Genus 7. SEDGE FAMILY. 329 6. Scirpus subterminalis Torr. Water Club- rush. Fig. 806. Scirpus subterminalis Torr. Fl. U. S. 1: 47. 1824. Perennial, aquatic, culms slender, terete, nodulose, i°-3ic long. Leaves very slender, channeled, 6-2° long, i"-S" wide; spikelet solitary, terminal, oblong-cylindric, narrowed at each end, several-flowered, 3"-
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Genus 7. SEDGE FAMILY. 329 6. Scirpus subterminalis Torr. Water Club- rush. Fig. 806. Scirpus subterminalis Torr. Fl. U. S. 1: 47. 1824. Perennial, aquatic, culms slender, terete, nodulose, i°-3ic long. Leaves very slender, channeled, 6-2° long, i"-S" wide; spikelet solitary, terminal, oblong-cylindric, narrowed at each end, several-flowered, 3"-7" long, sub- tended by a subulate erect involucral leaf, V-zi' long, thus appearing lateral; scales ovate-lanceolate, acute, membranous, light brown with a green midvein; bristles about 6, downwardly barbed, as long as the achene or shorter; stamens 3; style 3-cleft to about the middle; achene obovoid, 3-angled, dark brown, smooth, rather more than 1" long, obtuse, abruptly beaked by the slen- der base of the style. In ponds and streams or sometimes on their borders, New- foundland to the Northwest Territory and British Columbia, South Carolina, Pennsylvania, Michigan and Idaho. The so-called variety terrestris is an emersed form with erect culms and shorter spikelets. 7. Scirpus Hallii A. Gray. Hall's Club-rush. Fig. 807. Scirpus Hallii A. Gray, Man. Ed. 2, Add. 1863. 51. supinus var. Hallii A. Gray, Man. Ed. 5, 563. 1867. Annual, culms very slender, smooth, tufted, ob- tusely triangular, erect, striate, s'-12' taU- Lower sheaths oblique, and acuminate or mucronate on one side, the upper one commonly bearing a filiform blade, i'-2l' long; spikelets capitate in clusters of 1-7, oblong-cylindric, obtuse, many-flowered, 3"-6" long, about 1" thick, appearing lateral by the extension of the solitary involucral leaf which is 1/-4' long; scales ovate-lanceolate, light greenish brown, acuminate, keeled, cuspidate by the excurrent tip of the midve
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
