RUSH FAMILY 155 



petals 4 mm. long, lanceolate, acute or acuminate, light brown; capsule dark 

 brown, oblong, acute, 3-angled, about one-fourth longer than the perianth. J. 

 canadensis coarciaius Coulter, not Engelm. /. canadensis Kuntzei Buch. Bogs 

 and wet meadows: Mont. — Wyo.— Utah. SubmonL — Mont, Jl. 



33. J. Tracyi Rydb. Stem stout, 3-6 dm. high, compressed; blades 5-20 

 cm. long, 2-4 mm. wide; sheaths with a scarious margin which usually is pro- 

 duced into a very short auricle; inflorescence of 5-9 heads; these about 1 cm. in 

 diameter; sepals and petals lanceolate, acute, hght brown, 3-4 mm. long, shghtly 

 scarious-margined; capsule oblong, mucronate, shorter than the perianth, im- 

 perfectly 3-celled. Meadows: Utah— Nev,— Ida. SubmonL J1~0. 



34. J. brunnescens Rvdb. Stem 4-6 dm. higti, more or less winged; leaves 

 1-2.5 dm. long, 2-5 mm. wide; sheaths w^ith scarious margins, abruptly contracted 

 above, but scarcely auricled; panicle open, 5-10 cm. long, with 10-60 small 

 heads; petals and sepals subcqual, lanceolate, acuminate, about 3 mm. long, 

 light brown, with green midrib; capsule lance-ovoid, acute. Mountam meadows: 

 Colo. — N.M. — Ariz. — Xev. SubmonL Je-JL 



35. J. parous Rydb. Stem 3-6 dm. high, distinctly winged; leaves 2-3 dm. 

 long, 3-5 mm. wide; petals and sepals lanceolate, sharply acummate, subequal, 

 hght brown or greenish on the back; capsule oblong, acute, shorter than the 

 petals. Mountain meadows: Colo.— N.]M. SubmonL— Subalp. Je-Jl. 



36. J. saximontanus A. Nels. Stem winged, 2-5 dm. high; leaf-blades 

 3-20 cm. long, 2-4 mm. wide; inflorescence of 2-15 heads; these about 1 cm. 

 thick; sepals and petals lanceolate, acuminate, about 3 mm. long, dark brown; 

 capsule oblong, mucronate, a httle shorter than the peri^th, dark bro^jTi. J. 

 xiphioides inontanus Engehn. Meadows and wet places: B.C.— Cahf. — JN.iM.— 

 Alta, SiihmonL—Mont, Je-S. 



37. J. ensifolius Wikstr. Stem erect, 3-6 dm. high, winged; leaf-blades 

 more or less falcate, 5-30 cm. long, 3-6 mm. wide; heads about 1 cm. thick, 

 about 25-flowered; sepals and petals dark brown, lanceolate, acummate, about 

 3 mm. long; capsule oblong, acute, often slightly exceedmg the perianth, 3- 

 gonous. J. xiphiodes triandrus Engelm. Meadows and wet places: Alaska— 

 CaUf.— Utah— Alta. SubmonL Je-Au. 



2. JUNCOIDES (Dill.) Adans. Wood-rush. 



Perennial caulescent herbs, with rootstocks, glabrous or sparingly pubescent. 

 Leaf-sheaths closed; blades grass-like. Inflorescence umbel-like, capitate or 

 spike-like Flowers always subtended by usually lacerate or dtotate bractlets. 

 Stamens 6. Capsule 1-celled; ovules and seeds 3, basal. Seeds reticulate, 

 sometimes apiculate but never tailed. [Luzula DC] 



Flowers on slender pedicels in a corymblform inflorescence. 



^^'l\ire^s\'SSUsufe^^ gTeIn; leaves thin, shining; seeds ^-.-n^eUip^ 



Flowers and capsule dark brown; leaves thick, dull; seeds yeubw, ^onstricted at 



Petals and slpals 3-3.5 mm. long. 3, J. glabratum. 



Flowers subsessile in head-like or spike-like clusters. .„K„iat^ tin 



Blades at least of the lower leaves flat, not attenuate mto a subulate tip. 



SpDielets peduncled, forming a corj-mb. mmo'^um 



"^ Flowers Ught yeUow. |- ^ ilTrmlSium > 



Flowers brown or ferrugmous. S. J. tniermeaium. 



Spikelets subsessile. forming a compound spike. ,^^^^ HmaH and ^^t- 



^'^^v^^etnTcl^^e' ^^^'^^^^^^^^^^ subcapitate; ^tem-leay^bmad and fl^^^ 



""'^ilAh^Zfh^^^ elongate and often n<xlding; ^em^^ 



narrow, attenuate. .-, t . > + a T frXm' 



Bractlets lacerate, not ciUate: spike short, capitate. , 8. J. arctxcum. 

 Blades of the leaves attenuate into subulate, almost pungent tii>s , , 



Spikelets many-flowered; the lower on suberect or ascending pjd uncles ^^le^^ 



SpikS few-flowered on arcuate-spreading peduncles; l^^^'^^jj^^^^"'^^^ 



