COULTER AND ROSE—NORTH AMERICAN UMBELLIFERAE. 173 
ing the leaves, glabrous; leaves with narrow and elongated outline, the 
small pinne distant, either simple or pinnately divided into short nar- 
row segments; umbel with few very unequal rays, and involucels of 
linear or setaceous bractlets: rays from nearly wanting to 4 em. long; 
pedicels unequal, from nearly wanting to 5 mm. long; flowers yellow; 
fruit narrowly oblong, 4 to 6 mm. long, with lateral wings about half 
as broad as body, and narrower dorsal and intermediate wings or ribs; 
oil tubes 3 to 5 in the intervals, about 8 on the commissural side. 
Type locality, ** Palisade, Nevada;” collected by Jf 2. Jones, June 
14, 1882; type in Herb, Jones, fragment in U.S, Nat. Herb. 
From Nevada to Idaho and eastern Oregon. 
Specimens examined: 
OreGow: Cliffs of Steins Mountains, Cusick 1255, June, 1885, and same station, 
no. 1995, July 4, 1898; Alvord Desert, Letherg 2426, June 30, 1896. 
Ipano: Shoshone Falls, Palmer 104, June 4, 1893; same station, Henderson 4597, 
July 25, 1897. 
Nevapa: Type specimens as cited under type locality. 
The Jones plant from Soda Springs, Cal., associated with this species, is probably 
to be referred to P. californica, 
6. Pteryxia calcarea (Jones) C. & R. 
Cymopterus calcareus Jones, Contr. to Western Botany no. 8: 32. 1898. 
Short caulescent, giving rise toa tuft of leaves and longer peduncles 
(occasionally bearing a small leaf); leaves with the ultimate divisions 
linear; peduncles reaching a height of 2 to 3 dm.; umbel of unequal 
rays, no involucre, and involucels of small linear bractlets; rays 1 to 
3.5 cm. long; pedicels 2 to 4 mm. long; flowers yellow; fruit oblong, 
6 to 7mm. long, the dorsal and intermediate wings sometimes reduced 
in breadth; oil tubes 3 to 5 in the intervals, 6 or more on the com- 
misural side; seed face with broad and shallow concavity, but in im- 
mature specimens sometimes appearing plane. 
Type locality, ‘Green River, Wyoming:” collected by /ones, June 
23, 1896; type specimen in Herb, Jones, duplicate in U.S. Nat. Herb. 
Southwestern Wyoming to eastern Nevada and Oregon. 
Specimens examined: 
Wyomrina: Near Fort Bridger, Porter, July 8, 1878 (distributed as Cymopterus 
foeniculaceus); La Barge, Uinta County, Stevenson, June 21, 1894; Green 
River, Jones, June 23, 1896; Point of Rocks, Nelson 3083, June, 1897; Coke- 
ville, Uinta County, Nelson 4648, June 11, 1898. 
Uran: Detroit, Jones, June, 1891. 
Nevapa: Dutch Mountain, Jones, June 12, 1891. 
Orecon: Alvord Desert, Leiherg 2426, June 30, 1896, 
7. Pteryxia albiflora Nutt. in Torr. & Gray FIL. 1: 625, 1840. 
Cymopterus albiflorus Torr. & Gray Fl. 1: 625. 1840. 
Low, very leafy at base; leaves pale, the ultimate segments divari- 
cate and often 3-cleft, short, acute; peduncles slender, more or less 
spreading, | to 1.5 dm. high, considerably longer than the leaves; um- 
