> 
4 
a 
COULTER AND ROSE—-NORTH AMERICAN UMBELLIFERAE. 135 
This species was taken by us for Angelica verticillata Hooker and was so figured in 
the Contributions U. 8. National Herbarium, Vol. II], pl. 12. Prof. L. F. Hender- 
son, who has collected extensively in the region from which the type specimens 
came, insists that material which he has collected is certainly typical. We have 
therefore somewhat reluctantly yielded to his claims. 
9. Ligusticum simulans C. & R., sp. nov. 
Glabrous except some slight roughness in the inflorescence; rather 
stout, 6 to 9 dm. high; leaves nearly all basal, varying greatly in size, 
ternate, then once or twice pinnate; segments narrowly oblong to 
ovate, variously toothed or lobed; umbel many-rayed, with involucels 
of linear bractlets; rays (fruiting) 2.5 to 7.5 cm. long; pedicels 6 to 
10 mm. long; flowers white; fruit oblong, 4 to 5 mm. long, the ribs 
with narrow and very thin wings; stylopodium low conical. 
Type locality, Lincoln Gulch, Wyoming: collected by Aven Welson, 
no. 2626, August 13, 1896; type in U. S. Nat. Herb. 
Mountains of Wyoming. 
Specimens examined : 
Wyomine: Laramie Peak, Ne/son 1601, August 7, 1894; same station, Centennial 
Valley and Laplata Mines, Nelson 1665, 1677, 1784, August, 1895; Woods 
Creek and Lincoln Gulch (type specimens), Nelson 2086, 2626, August, 1896; 
Carbon County (Beaver Dam, Sierra Madre, and Battle Lake), Nelson 3389, 
3402, 3410, 4175, August, 1897. 
Easily confused with Conioselinum scopulorum., 
10, Ligusticum filicinum Watson, Proc. Am. Acad. 11:140. 1876. 
Stem 4 to 9dm. high, more or less leafy, with glabrous inflorescence; 
lower leaves often very large, once or twice ternate, then bipinnate; the 
segments or their pinnatifid divisions narrowly linear; umbel of numer- 
ous rays, with involucels of one or few small linear bractlets; rays 
(fruiting) 2.5 to 5 cm. long: pedicels 6 to 10mm. long; fruit narrowly 
oblong, 6 to 7 mm. long, with somewhat prominent conical stylopodia, 
and prominent somewhat winged ribs; oil tubes 8 to 5 in the intervals, 
6 to 8 on the commissural side. 
Type locality, ** Uinta Mountains,” northern Utah, altitude 2,400 
meters; collected by Watson, no. 454, August, 1869; type in Herb. 
Gray, duplicate in U. S. Nat. Herb. 
Mountains of Utah, northwestern Wyoming, and western Montana. 
Specimens examined: 
Uran: Type specimens as cited under type locality; Alta, Wasatch Mountains, 
altitude 2,700 meters, Jones 1170, August 4, 1879. 
Wyomine: Wind River Mountains, Forwood, July 25, 1881; northwestern Wyo 
ming, Rose 189, in 1893; Lewis River, Yellowstone Park, 4. & E. Nelson 
6591, August 21, 1899. 
Montana: Lost Horse Pass, Bitter Root Forest Reserve, altitude 2,000 meters, 
Leiberg 2991, September 10, 1897. 
11. Ligusticum porteri C. & R. Rev. N. Am. Umbell. 86. 1888. 
Rather stout, 6 to 9 dm. high, leafy, with giabrous or puberulent 
inflorescence; leaves large, biternate then bipinnate; the numerous 
