a 
COULTER AND ROSE——-NORTH AMERICAN UMBELLIFERAE, 209 
Mountains of eastern Oregon, eastern Washington, and adjacent 
Idaho. 
Specimens examined: 
OrEGON: Type specimens as cited under type locality. 
WASHINGTON: Spokane County, Leiberg 750, May, 1891; Sandberg & Letherg 84, in 
1893; Pullman, Whitman County, Piper 1565, May 24, 1894; Waitsburg, 
Walla Walla County, lorner 4, April 16, 1897; moist rocky plains on the 
Palouse Hills, Whitman County, Piper 73, May, 1897 (type of Peucedanuin 
confusum Piper). 
Ipano: Lewiston, Nez Perces County, A. A. E. Gertrude Heller 2967, April 27, 
1896. . 
This species issaid to be very common, and the earliest spring flower in the region. 
2. Lomatium geyeri (Watson) C. & R. 
Peucedanum geyeri Watson, Proc. Am. Acad, 14: 295. 1879. 
Peucedanum evittatun C. & R. Bot. Gaz, 14: 277. [889. 
Acaulescent, 1 to 4.5 em. high, from a deep-seated small tuber, 
glabrous; leaves once or twice ternate then more or less pinnate into 
linear callous-tipped segments 1 to 5 cm. long: umbel somewhat 
unequally 8 to L8-rayed, with involucels of numerous purplish lance- 
olate acuminate united bractlets; rays 2.5 to 5 cm. long; pedicels 
short, 2 to 3 mm. long: flowers white; fruit oblong, glabrous, 8 to 10 
min. long, 5 mm. broad, with very thin membranous wings more than 
half as broad as body; oil tubes none, 
Type locality, sandy woods and plains, Upper Columbia River, 
‘astern Washington: collected by Geyer, no. 458; type in Herb. Gray. 
Associated with the type in the original description is Spalding from 
Clearwater, Idaho, but this belongs elsewhere. 
Eastern Washington and northern Idaho. 
Specimens eramimed: : 
Wasutxcron: Type specimens as cited under type locality; Spokane County, 
Suksdorf 1205, May, 1889; Yakima, WNittitas, and Spokane counties, Hender- 
son 2502, 2503, 2504, May-June, 1892; Sundberg & Leiberg 7, in 1893; Spokane 
County, Piper 2300, May 16, 1806. 
Tpano: Lake Pend Oreille, Kootenai County, Leiberg 460, March—June, 1892, 
Peucedanum geyeri Watson (Bibl. Index) was based on 2. canbiguen of Hooker, 
which refers to Geyer’s no, 458. The next year Dr. Watson published'a detailed 
description in Proc. Am. Acad, 14: 293, but this covers more than one species. An 
examination of the sheet in the Gray Herbarium shows two other species confused 
with it, both of which were probably collected by Spalding and seem to represent 
LL. gormant and L, farinosum. 
3. Lomatium hendersonii C. & R. 
Peucedanum hendersonii C. & R. Bot. Gaz. 18: 210. 1888. 
Acaulescent, mostly glabrous, from a shallow constricted tuber 1 to 
2.5 em. in diameter; leaves ternate then bipinnate, ultimate segments 
short and obtuse; umbel equally 2 to 5-rayed, with involucels of 
linear acuminate scarious bractlets: rays | to 2 cm. long: pedicels 3 to 
4mm. long; flowers white; fruit ovate, glabrous, 9 mm. long, 4 mm. 
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