Or" 
6. S. pacificus Greene. -——>+ Rather coarse herbs often growing in 
water, with short vertical rootstocks and fleshy roots; stems 60-80 cm, 
tall, glabrous and glaucous; basal leaves varying from linear, when 
partly submerged, 5-10 ma. wide, to oblanceolate, the blades 15=25 em, 
long, tapering to a petiole of equal length; stem leaves gradually 
diminished upwards, the lower oblanceolate, narrowed to broad-winged 
petioles, the upper oblong-lanceolate, broadest at the clasping base, 
all entire, smooth and rather glaucous; heads all discoid, in terminal 
flat-topped corymbs 5-10 cm. across; involucral bracts 7-8 mm, long, 
the inner 2 mm, broad with thin margins, all glabrous, hardly black tipped, 
u 
disc-corollas 7 mm, longs achenes glabrous. 
Infrequent in marshy ground at low elevations, — —> 
—— > Lower valley of Clark Fork, 2100 ft., Leiberg 1665; Pearl Island near 
Hope, Dunkle; Sandpoint, Christ 2029 — 
