

RUSH FAMILY. 

 2. Juncus conglomerate L. Glomerate Rush. 



f uncns conglomeratus L. Sp. PI. 326. 1757. 

 Juncus Leersi\ Mars. Fl. Neu-Vorpom. 451'. isfo. 



Plant i-2/ 2 high, densely tufted, erect. Root- 

 stock stout, with proliferous branches; stem dis- 

 tinctly ribbed just beneath the inflorescence; leaf- 

 blades wanting or reduced to minute filiform rudi- 

 ments; inflorescence congested, seldom more than 

 io // high; lowest bract of the inflorescence a'-6' 

 long, much shorter than the stem; perianth i^'-a" 

 long, its parts green, lanceolate, acuminate; stamens 

 3, about two-thirds as long as the perianth; anthers 

 shorter than the filaments; capsule nearly as long 

 as the perianth, obovoid, obtuse or retuse at apex, 

 tipped with the base of the style; seed l"-#" in 

 length, obliquely oblong, acute or abruptly apiculate 

 at both ends, reticulate in about 16 longitudinal rows, 

 the reticulations smooth and two or three times 

 broader than long. 



In the sphagnum bogs of Newfoundland. Kt-M-inhlin K in aopcarancr .pcdtncn* of 7 



with congested inflorescence. Also in northern KurojK- and 



3. Juncus filiformis L,. Thread Ru>li. . 1-i-. .,. 



Juncusjili/<>i-nu\ I 



Perennial, stems 4'-25' tall, erect, about V in dia- 

 meter, arising from a creeping rooUtock; km*} leave* 

 reduced to bladcless sheaths; involucral leaf uraally 

 longer than the stem; inflorescence rarely with mar* 

 than 20 flowers or more than i' high, commonly with 

 less than 8 flowers and less than to" high, perianth 

 i%"-i%" long, its parts nearly equal, green with 

 hyaline margins, narrowly lanceolate, acute, or the 

 inner obtuse; stamens 6, about half aa long as the 

 perianth; anthers shorter than the filaments; style 

 very short; capsule obovoid, green, barely [HaHd, 

 about three-fourths as long as the perianth, 3 -celled; 

 seed obliquely oblong, about X" lon K- pointed at 

 either end, with an irregularly wrinkled coat, seldom 

 developing reticulations. 



Labrador to British Columbia. 

 of Pennsylvania, to Michigan, and in Ihr Kockv 

 tains to Utah and Colorado. Abo in Knrope ana . 



4. Juncus gymnocarpus Coville. Pennsylvania Rush. 



Juncus Smithii Engelm. Trans. St. Louis Acad. 2: 444. 



1866. Not Kunth, 1841. 

 J.gymnocarpusCoville, Mem. Torr. Club, 5: 106. 1894. 



Stems erect, i-2 l / 2 high, about i" thick, arising 

 at intervals from a creeping proliferous rootstock 

 about i y*" in diameter; basal leaves reduced to blade- 

 less clasping sheaths; panicle commonly 7 // -i5 // high, 

 spreading, its subtending leaf usually 4 / -io / long; 

 perianth i x/ in length or a little less, its parts with a 

 green midrib, equal, lanceolate, the outer acute, the 

 inner obtuse; stamens 6, nearly as long as the peri- 

 anth, the anthers shorter than the filaments; capsule 

 almost twice as long as the perianth, broadly ovoid, 

 conspicuously mucronate, brown and shining, barely 

 dehiscent, 3-celled; seed obliquely obovoid or oblong, 

 somewhat misshapen by compression in the capsule, 

 about y^' f long, none with perfect markings seen. 



In swamps, mountains of Schuylkill and Lebanon 

 counties, Pennsylvania. 



25 



