to 12-ravecL with involucels of linear acuminate bractlcts; ravs 1 to 
5 inches long; pedicels 3 to 9 lines long; flowers yellow: fruit nar- 
rowly oblong, 9 to 14 lines long, 8 to 0 lines broad, with wings 
narrower than body, and very prominent dorsal and intermediate 
ribs: oil-tubes solitary, very large (filling the intervals), 2 on 
the commissural side: seed-face somewhat concave. (Fig. 70.) 
Dry rocky inouncaiii sides, Klickitat county, Oregon (Suksdorf ). 
^ 7. Low, shortly caulescent or attaulescent, from a thick elongated 
root, glabrous: leaves ternate or pinnate, with broad oblong or lound 
coarsely cuspidate-toothed leaflets: flowers yellow; fruit wings very broad, 
often sevei’al times broader than body: oil-tubes solitary in the inter- 
vals (except in P. Hoicellii). 
41. P. Euryptera Froe. Am. Acad. vii. 848. Shortly 
caulescent, rather stout, 0 to 12 inches high: leaves ternate; leaflets 
broadly cordate, somewhat lobed, coarsely mucronate-toothed, 
to 1 inch long: umbel ecpially 8 to 15-rayed, with involucels of 
lanceolate bractlets; rays ^ to 2 inches long; j^edicels 6 lines long: 
fruit nearly orbicular, emarginate at each end, glabrous, 5 to 7 
lines in diameter, with wings more than twice as broad as body, 
and prominent obtuse dorsal and intermediate ribs: oil-tubes 2 to 4 
on the commissural side. (Fig. 71 .) — Euryptera lucida Nutt. 
Torn & Gray, FI. i. (529. 
Gravelly hills, S. California, and Tucson, Arizona (Le/amoit (52). 
42. P. Howellii Watson, Proc. Am. Acad. xx. 869. Acau- 
lescent, with peduncle 12 to 18 inches high; leaves biternate to 
biquinate; leaflets cuneate-orbicular to round-cordate, acutely 
dentate, often 8-lobed, 6 to 12 lines long: umbel with few elon- 
gated and divaricate fertile rays, with involucels of acuminate 
lanceolate bractlets; pedicels 4 lines long: fruit glabrous, broadly 
elliptical or nearly orbicular, emarginate, with wings broader than 
body, 4 lines long: oil-tubes 8 or 4 in the intervals, 4 to' 10 on the 
commissural side. (Fig. 72.) 
Near Waldo, Josephine county, Oregon (Howell). 
48. p. parrifolium Torr. & Gray, FI. i. (528. Short caules- 
cent, slender, with a solitary peduncle 4 to 12 inches high; leaves 
clustered near the base, usually large (4 to 6 inches long), bipin- 
nate (but the upper leaflets confluent); leaflets broad, obtuse 
(usually ending truncately or emarginately between two divaricate 
teeth), irregularly incised and with broad strongly cuspidate teeth; 
