flowers yellow; fruit broadly elliptical, glabrous, 2 to 5 lines long, 
1 to 3^ lines broad: oil-tubes 4 to 6 on the commissural side, 
sometimes 2 or 3 very short accessory ones in the dorsal intervals: 
seed-face somewhat concave. (Fig. 60.) 
From S- California to British Columbia, and extending eastward to 
Idaho. FI. April to July. 
* * Fruit-wings narrow and thickish : oil-tubes obsolete or 
very indistinct and numerous in the intervals : dorsal and inter- 
mediate ribs obsolete or nearly so. 
29. P. caruifolium Torr. & Gray, FI. i . 628. Like the preced- 
ing species, but often more caulescent, the elongated peduncles ^ 
to 1^ feet high, leaf-segments to 2 inches long, dilated bractlets 
not only obovate but often lanceolate, fruit 3 or 4 lines long, with 
wings half as broad as body and obsolete dorsal and intermediate 
ribs, oil-tubes indistinct, 2 or 3 in the inteivals, none on the com- 
missural side. (Fig. 61.) — P. marginatum Benth, PI. Hartw% 312. 
Central California, from San Luis Obispo county {Jones 3600), 
through the central counties by numerous collectors, to Butte county 
{Mrs. R- M. Austin). 
30. P. bicolor Watson, King’s Rep. v. 129. Caulescent or 
scarcely so, 4 to 18 inches high, glabrous or slightly puberulent: 
petioles wholly dilated ; leaves ternate-pinnately decompound, the 
ultimate segments very numerous and linear : umbel very unequall}^ 
2 to 10-rayed, with involucels of 1 to 8 linear-subulate bractlets; 
rays 1 to 5 inches long; pedicels short; flowers yellow or w’hite: 
calyx-teeth obsolete: fruit oblong, glabrous, 5 to 6 lines long, 1 to 
2% lines broad, with nearly obsolete dorsal and intermediate ribs: 
dorsal oil-tubes obsolete, 2 on the commissural side. 
Utah, Wahsatch Mts. (Wafsoir, Parry 21), City Creek Canon {Jones 
1713, in 1880); Nevada, Empire City {Jones, in 1882); Oregon, Hood River 
{Henderson). 
This species resembles Leptotmnia in the thickness of its wings. 
31. P. Parishii C. & R. Bot. Gazette, xiii. 209. Caules- 
cent, from a few inches to a foot high, glaucous, closely pubescent, 
from a thick elongated root: leaves pinnate, with pinnatifid to 
entire leaflets, the ultimate oblong-linear or linear segments cuspi- 
date, somewhat toothed or entire; root-leaves sometimes nearly 
entire or few-cleft: umbel unequally 4 to 12-rayed, with involucels 
of small linear-lanceolate acuminate bractlets; rays 1 to 5 inches 
