476 



JUNCACEAE. 



Vol. I. 



28. Juncus triglumis L. Three-flowered Rush. Fig. 1193. 



J uncus 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, i" 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 

 1V-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 1" 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. 



2g. Juncus pelocarpus E. Meyer. Brown-fruited Rush. 



Juncus pelocarpus E. Meyer, Syn. Luz. 30. 1823. 



Rootstock slender ; stems 3'-2o' high, 1-5-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' in height or less; secondary panicles rarely 

 produced from the axils of the upper leaves; panicle 

 loose, with distant heads of 1 or sometimes 2 flowers ; 

 perianth |"-ii" long, the parts linear-oblong, green to 

 reddish-green, obtuse or the inner sometimes acute, the 

 outer usually the shorter, all of them frequently modi- 

 fied into rudimentary leaves ; stamens 6, about two- 

 thirds as long as the perianth; anthers exceeding the 

 filaments; style commonly i" and stigmas 1" long; 

 capsule subulate-linear, its slender beak exceeding the 

 perianth, i-celled; seed oblong to obovoid, l"-i" long, 

 reticulate in about 24 rows, the areolae smooth. 



Newfoundland to New Jersey, Ontario and Minnesota. 



30. Juncus subtilis E. Meyer. Creep- 

 ing Rush. Fig. 1195. 



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



Juncus pelocarpus subtilis Engelra. Trans. St. 

 Louis Acad. 2: 456. 1866. 



Tufted; stems filiform, creeping on mud, or 

 floating, simple or branched, sometimes 5 dm. 

 long, but usually much shorter, the leaves 

 capillary, often fascicled at the nodes. Flow- 

 ers only 1 or 2, axillary or terminal, short- 

 peduncled or sessile; perianth about 1" long, 

 its parts linear-oblong, reddish, obtuse of 

 acutish, the outer shorter than the inner; 

 stamens 6, shorter than the perianth; anthers 

 about as long as the filaments; capsule tri- 

 gonous, slender-beaked, a little longer than 

 the perianth. 



Newfoundland to Quebec and Maine. 



