19. J. ensifolius Wikstr. Stems from rootstocks, loosely tufted, more 
or less flattened, 40-50 em, tall, 1-1.5 ma, in diameter; leaves flattened 
laterally, 3-6 mm, broad, apparently jointed, but the septa sometimes very 
obscure, half the length of the stem, auricles none, the blade sheathing, 
scarious; inflorescence terminal, open, the peduncles 1-4 em, long. subtended 
by a leaf-like bract 2-10 cm. long; glomerules Commonly 3-10, /at maturity \ 
globose, dark purplish brown, 8-10 m, in diameter; flowers numerous, peri- 
anth segments green with Coppery margins, obscurely 5-veined, subequal, 
e-2.5 mm, long, narrowly lanceolate, acute or acuminate, chaffy; stamens 
(2-6) commonly 5, Opposite the outer segments, 1/2-2/3 the length of the 
segments, the anthers shorter than the filaments; capsule oblong, somewhat 
exceeding the segments, subacute at the apex; seeds amber; the areole prom- 
inent, elliptical, .5 mm, long, apiculate at both ends. 
Marshy and springy places, stream sides and meadows at all elevations, 
20. J. brunnescens Rydb, Stems from rootstocks, loosely tufted, flattened, 
40-60 cm, tall, 1-2 mm, in diameter; leaves flattened laterally, 3-4 mn, 
broad, apparently jointed, but the septa sometimes very obscure, half the 
length of the stem, auricles none, the sheathing blade scarious; inflorescence 
terminal, open, peduncles 1-3 cm. long, subtended by a leaf-like bract 
de 
pe ene 
rt } 
2-5 em. longs glomerules numerous,| at maturity hemispherical), 6-8 m, in 
ciniticeneaie ae 
diameter, dark browvm; flowers numerous, perianth segments subequal, 2-2,5 
mi. long, lanceolate, acuminate, firm, not scarious; stamens 1/2-2/3 the 
length of the segments, the anthers about 1/2 the length of the filaments; 
capsule oblong, subequal to or shorter than the perianth, dcep purplish 
brown, obtuse; seeds dark brown, globose-elliptical, minutely apiculate, 
but obtuse at both ends, .4 mm, long, 
Lake Pend Oreille at Sandpoint, Spling 10398, 
