CATALOGUE. 189 
Uintas, on a ridge above Bear River Canon ; 9,000 feet elevation ; Au- 
gust. (663.) 
Senecio hydropiiilus, Nutt. Perennial, glabrous ; stem solitary, sim- 
ple, striate, 2-3° bigli ; leaves thickisli, broadly lanceolate, acute, entire or 
obscurely repand-denticulate, the midrib very broad ; lower ones 6-7' long, 
1^-2' broad, narrowed into a short petiole dilated at the base and clasping; 
upper ones gradually smaller, sessile, partly clasping ; heads small, in a ratlicr 
dense compound nearly naked corymb ; involucres obscurely calyculate ; the 
scales lanceolate with a minute blackened point ; rays small, 3-6 ; achenia 
glabrous. — Wyoming and Colorado to California; Valley of Great Salt Lake, 
(Stansbnry.) Wet meadows in Ruby Valley, Nevada, in Parley's Park, and 
at the head of Echo Caiion in the Wahsatcli ; 6-7,000 feet elevation ; 
Jnly-September. (664.) 
Senecio teiangularis, Hook. Glabrous ; stems 2-4° high, simple, 
striate, leafy, 3-4 growing from one root; leaves 3-5' long, 1^-3' wide, 
deltoid-ovate or triangular-lanceolate, sharply and unequally repand-dentate 
or cut-toothed, acute, truncate or subcordate at the base, all but the upper- 
most on slender, often winged, petioles ; heads rather large, 6" long, few in 
a loose or sometimes fastigiate corymb ; involucres sul)cylindraceous, with a 
few linear-subulate bractlets at the base, the scales about 15, lanceolate with 
sphacelate tips ; rays 6-9, (10-12, 7\ Sf G.,) less than twice as long as the 
involucre ; achenia striate, glabrous. — Alaska to California, Saskatchewan and 
Colorado. Banks of creeks and wet places. East Humboldt Mountains and 
Uintas ; 7-8,000 feet elevation ; July, August. (665.) 
Senecio Andinus, Nutt. Glabrous ; stems many from one root, 2-4° 
high, simple, striate, very leafy; leaves 3-5' long, 3-10" wide, linear- 
lanceolate, acute at both ends, serrulate, often sharply so ; upper ones sessile ; 
lower ones short-petioled ; heads 4" long, very numerous in panicled corymbs ; 
involucres calyculate with small subulate bractlets ; rays 5-8, disk-flowers 
12-20; achenia glabrous. — S. Serra has fewer and larger heads, as in S. tri- 
angularis, and the leaves are sharply serrate with incurved teeth Oregon to 
Southern Idaho and ''Rocky Mountains at 41°," (Nuttall!) Near Carson 
City, Nevada, (Anderson !) Banks of streams, Havallah and East Humboldt 
Mountains, and along the eastern base of the Wahsatch ; 5,500-8,000 feet 
elevation ; June-August. (666.) 
Senecio aureus, L. The typical form, with roundish-ovate cordaet 
