390 



JUXCACEAE. 



23. Juncus triglumis L,. Three-flowered Rush. (Fig. 941.) 



Juncus triglumis L. Sp. PI. 328. 1753. 



Stems 3 / -7 / high, loosely tufted on a branched root- 

 stock, erect, terete. Leaves 1-5, all basal, with sheaths 

 clasping and conspicuously auriculate, the blades sub- 

 terete, blunt, W in diameter, usually less than half 

 the height of the plant; inflorescence a capitate clus- 

 ter of 1-5 (usually 3) flowers, the lowest 2 or 3 bracts 

 nearly equal, divergent, about as long as the flowers, 

 usually brown, obtuse and membranous; perianth 

 i^ // -2 // long, its parts oblong-lanceolate, obtuse; sta- 

 mens nearly as long as the perianth; anthers linear, 

 short; capsule about equalling the perianth, oblong, 

 obtuse, mucronate, 3-angled, imperfectly 3-celled; seed 

 about \" long, its body oblong, abruptly contracted 

 into long slender tails. 



Labrador and Newfoundland to Alaska, south in the 

 Rocky Mountains to Colorado. Also in Europe and Asia. 



24. Juncus pelocarpus E. Meyer. Brownish-fruited Rush. (Fig. 942.) 



Juncus pelocat-pus E. Meyer, Syn. Luz. 30. 1823. 



Rootstock slender; stems 3 / -2o / high, i-5-leaved; 

 basal leaves 2-4, with loose auriculate sheaths, mostly 

 with slender terete blades seldom exceeding 5' in 

 length; stem leaves 1-5, similar to the basal; inflores- 

 cence 4 r in height or less; secondary panicles rarely 

 produced from the axils of the upper leaves; panicle 

 loose, with distant heads of i or sometimes 2 

 flowers; perianth %"-i%" long, the parts linear- 

 oblong, green to reddish-green, obtuse or the inner 

 sometimes acute, the outer usually the shorter, 

 all of them frequently modified into rudimentary 

 leaves; stamens 6, about two-thirds as long as the 

 perianth; anthers slightly exceeding the filaments; 

 style commonly %" and stigmas i" long; capsule 

 subulate-linear, its slender beak exceeding the peri- 

 anth, i-celled; seed oblong to obovoid, \"-}" long, 

 reticulate in about 24 rows, the areolae smooth. 



Newfoundland to New Jersey and Minnesota. 



Juncus pelocarpus subtilis (E. Meyer) Engelm. Trans. St. Louis Acad. 2: 456. 

 Juncus subtilis E. Meyer, Syn. Luz. 31. 1823. 



Much smaller, depressed, i-few-flowered. Northern Maine and adjacent Canada. 



25. Juncus bulbosus L,. Bulbous Rush. (Fig. 943.) 



Juncus bulbosus L. Sp. PI. 327. 1753. 



Tufted, 2 / -8 / high; stems erect, or procumbent and 

 rooting at the joints, usually bulbous. Leaves of two 

 kinds, the basal mostly submersed, filiform, the caul- 

 ine stouter, all with auriculate sheaths 10" long or less, 

 the septa of the blades inconspicuous; panicle of i-io 

 heads; heads top-shaped to hemispheric, 4-i5-flowered, 

 some of the flowers often transformed into tufts of small 

 leaves; perianth I V^'-i^'long, its parts nearly equal, 

 linear-lanceolate, obtuse, brown, or with a green mid- 

 rib; stamens 3, shorter than the perianth; anthers a 

 little shorter than the filaments; capsule narrowly ob- 

 long, obtuse, mucronate, slightly exceeding the peri- 

 anth, brown above, i-celled; seed narrowly oblong, 

 about ]^" long, acute at base, obtuse and apiculate 

 above, 25~3o-ribbed. 



Labrador and Newfoundland. Common in Europe. 



1866. 



