42. Capsules 2.2-3.5 mm. long (43) 



43(42). Sepals 3.3-4 mm. long 37. /. acuminatus. 



43. Sepals 2.2-2.9 mm. long (44) 



44(43). Glomerules 5 to 35 per inflorescence 43. /. dehilis. 



44. Glomerules 40 to 200 per inflorescence (45) 



45(44). Sepals 2-2.5 mm. long, 0.6-0.8 mm. broad; petals 1.9-2.3 mm. long, 

 0.4-0.6 mm, broad; capsule golden-brown, 2.3-2.5 mm. long; septa 

 of blades conspicuous 44. /. nodatus. 



45. Sepals 2.6-2.9 mm. long, 0.9-1.1 mm. broad; petals 2.4-2.8 mm. long, 



0.6-0.8 mm. broad; capsule dark golden-brown to fuscous, 2.4-2.9 

 mm. long; septa of blades inconspicuous 45. /. Elliottii. 



1. Juncus Drummondii E. Mey. 



Stems tufted, mostly 15-35 cm. high, from matted rootstocks; basal leaf sheaths 

 all bladeless or with the mere rudiments of blades; inflorescence 1- to 3-flowered, 

 rarely 4- or 5-flowered, the flowers inserted singly and each with a pair of bract- 

 lets at the base; lowest leaf of the inflorescence mostly 2-3 cm. long; perianth 

 6 mm. long, its segments lanceolate, acute to acuminate, with broad brown mar- 

 gins, the inner equaling the outer or nearly so; stamens 6, scarcely half the length 

 of the segments; anthers longer than the filaments; capsule oblong, refuse at apex, 

 equaling the segments; seeds ovate, 2 mm. long, caudate, very finely striate. 



Moist or wet alpine slopes, bogs and seepage in mts. of N.M. (Taos, Santa Fe, 

 San Miguel and Rio Arriba cos.) and Ariz. (Coconino Co.); from Alas, s to s. 

 Calif,, N. M. and Ariz. 



2. Juncus filiformis L. 



Perennial plants; stems 7-50 cm. long, arising from a matted rootstock, erect, 

 slender, finely striate; sheaths purplish-tinged, obtuse, with a short bristlelike 

 remnant of a blade often present or this absent entirely; panicle 5- to 10-flowered, 

 1-3 cm. high; bract terete, appearing like a continuation of the stem, usually 

 longer than the stem proper; perianth 2.5-3.5 mm. long; bractlets obtuse; segments 

 of perianth lanceolate, greenish or stramineous in age, margins hyaline, equal or 

 outer somewhat longer, acute to acuminate, the inner usually less pointed, some- 

 times almost obtuse; stamens 6; capsule obovoid, green to stramineous in age, 

 somewhat pointed, three fourths to nearly as long as the petals. 



Moist or wet places and seepage along streams, in N. M. (Taos Co.); Greenl. 

 to Alas., s. to Pa., N.M., Ut. and Wash.; Euras. 



3. Juncus balticus Willd. Wire rush. Fig. 310. 



Stems in small clusters or arising singly from creeping rootstocks, 2-9 dm. 

 tall, strict, terete or compressed, moderately stout; basal leaf sheaths bladeless; 

 panicle lateral, lax or somewhat compact, few- or many-flowered, its branches 

 disposed to be secund; perianth segments 3.5-5 mm. long, lanceolate, the outer 

 segments acuminate, the inner ones acute and slightly shorter, greenish or straw- 

 colored or brownish with a green midrib, the hyaline margins usually rather broad 

 and well developed on the inner segments; stamens about two thirds as long as 

 the perianth, the anthers much longer than the filaments; capsule as long as or 

 slightly shorter than the perianth, oblong-ovoid, mucronate, pale or dark brown; 

 seeds oblong-cylindric, faintly reticulate, often with a whitish, membranous sur- 

 face. Incl. var. littoralis Engclm. and var. inontanns Engelm. 



In marshes, seepage areas and in shallow water of ponds and pools, in Okla. 

 (Black Mesa, Waterfall), N.M. (widespread) and Ariz. (Santa Cruz, Coconino, 

 Cochise, Pima and Navajo cos.); widespread in N.A. and the Old World. 



610 



