57 
collecting, in Canby’s herbarium, has enabled us to characterize it as <juit@ 
a distinct species. This is “Chucklusa’' of the Spokane Indians, next to 
Camass their most valuable food plant. 
3. P. Watsoni C. & R. Bot. Gazette, 'xiii. 209. Two or 
three inches high, glabrous or puberulent, with a short subter- 
ranean stem from a deep-seated globose or oblong tuber (with 
clusters of rootlets over its surface) with or without a thick elon- 
gated root below: leaves bipinnate, the ultimate segments short and 
linear-oblong: umbel unequally 1 to 5-rayed, witli involucels 
of more or less united often toothed bractlets; rays from almost 
wanting to an inch long: fruit sessile or nearly so, ovate, rough- 
puberulent, 3 lines long, 1}4 lines broad, with very narrow wings, 
and filiform or almost obsolete dorsal and intermediate ribs: oil- 
tubes (sometimes wanting) very obscure, 3 to 6 in the intervals, 
1 in each rib, and 6 on the commissural side: seed-face plane. 
(Fig. 41.) 
High hills and mountains of Washington Territory, Oimcoe Mts. 
{Howell, in 1881), Klickitat county (Howell, 411, 412, 413), Cascade Mts. 
{Brandegee, in 1882, no. 320 of Oanby’s N. Transcontinental survey), near 
Columbus (Suksdorf); Oregon, near the Dalles (Hotvell C. in 1882), and 
Alkali (Howell 830, in 1882). FI. May and June. 
This species is readily recognized by its 1 to 3 clusters of sessile ovate 
puberulent fruits, and Erigenia-like flowers. 
4. P. Geyeri Watson, Proc. Am. Acad. xiv. 293. Root 
moniliform, with 2 or 3 small rounded tubers: leaves ternate-quin- 
ate; leaflets linear, 4 to 9 lines long: umbel small, unequally rayed, 
with involucels of several linear acuminate bractlets: mature fruit 
unknown. 
Collected by Geyer (458); also on the Clear Water, Idaho {Rev. Mr. 
Spalding); and probably near Fort Colville, Washington Territory {Lyall, 
in 1861). 
A good deal of P. farinosum has been distributed as P. Geyeri. 
5. P. farinosum Geyer, Hook. Lond. Journ. Bot. vi. 235. 
Dwarf, from a deep-seated solitary rounded tuber with frequent 
clusters of fine rootlets over its surface: leaves 2 to 3-ternate, with 
segments more or less lobed, ultimate divisions all linear: umbel 1 
to 8-rayed, with involucels of few small linear bractlets; rays 1 to 2 
inches long: fruit almost sessile, oblong-elliptical, glabrous, 3 to 4 
lines long, 2 lines broad, with wings half as broad as body: oil- 
