168 BOTANY. 



Glrand Roude prairie, (Nuttall ! ;) Utah Valley, (Mrs. Carrington.) Summit 

 of ridge on Antelope Island, Great Salt Lake, and on the ridge between 

 Utah Valley and the Valley of Salt Lake ; 5,500-6,000 feet elevation ; June, 

 July. (596.) 



Balsamoeehiza macrophylla, Nutt. Sparingly pubescent and slightly 

 glandular-roughened, at length nearly smooth ; radical leaves 6-10' long, 

 broadly ovate, long-petioled, pinnately parted ; the divisions oblong-ovate or 

 broadly lanceolate, often 1' wide, entire or more or less incised ; scapes 15- 

 20' high, monocephalous, with a pair of petioled pinnately-lobed leaves near 

 the base ; heads very large ; involucral scales in about 3 series, lanceolate, 

 the outer ones foliaceous and often reflexed ; rays 2' long and often 6-8" 

 broad, the ends entire or slightly toothed. — " Toward the sources of the 

 Colorado of the West, in the Rocky Mountains, " (Nuttall ;) California. 

 Abundant in the Wahsatch Mountains at 4,500-6,000 feet elevation; May- 

 July. The leaves vary in shape exceedingly, being sometimes slightly lobed, 

 and occasionally even entire. (597.) 



Balsamoerhiza sagittata, Nutt. Canescent and minutely tomentose ; 

 radical leaves on long petioles, cordate-ovate or somewhat hastate, acute, 

 entire, 4-8' long, 2-4' wide ; stems 9-15' high, bearing a few small scattered 

 oblong-spatulate leaves, monocephalous, or with 2-3 heads ; involucre white- 

 woolly ; rays very large, entire or toothed. — Mountains of Oregon and Cali- 

 fornia to Colorado ; Western Nevada, (Anderson ! Bloomer !) Foot-hills 

 and mountain sides from Carson City to the Wahsatch; 4,500-7,000 feet 

 elevation ; April-July. (598.) 



RuDBECKiA occiDENTALis, Nutt. Smooth or nearly so ; stems 2-4° 

 high, simple ; leaves ovate-acuminate, entire or coarsely toothed, ample, 5-7' 

 long, 3-4' broad, 3-5 nerved at the base, and abruptly narrowed into a short 

 winged petiole ; heads solitary or few, on long peduncles ; the involucre 1-2' 

 broad, of numerous oblong-hnear unequal foliaceous spreading or reflexed 

 scales ; rays none ; receptacle much elongated ; disk purplish-brown, conical- 

 oblong, in fruit as thick as one's finger and half as long ; chaff" about the 

 length of the mature achenia ; pappus coroniform, toothed. — Oregon, and 

 Rocky Mountains. East Humboldt Mountains to the Wahsatch ; 6-7,500 

 feet elevation; July-September. (599.) 



Heliakthus exilis, G-ray. Proc. Amer. Acad. 6. 545. Annual, scab- 

 rous or hirsute ; stems slender, a foot or more high, branching ; leaves oppo- 



