79 
•j" Flowers yellow : oil-tubes numerous. 
7. C. terebinthinus Ton-. & Gray, FI. i. 624. Shortly 
caulescent, glabrous, 6 to 18 inches high, leafy at base: leaves 
rather rigid, thrice pinnate (sometimes ternate at first) ; leaflets a 
line long or less, linear or linear-oblong, entire or toothed, mucro- 
nate: umbels with 4 to 15 fertile rays, mostly no involucre, and in- 
volucels of short linear or lanceolate bractlets; rays ^ to 2 inches 
long; pedicels 1 to 5 lines long: fruit 3 to 4 lines long, the (mostly) 
5 carpel wings broad and thin (sometimes wrinkled), with a rather 
indistinct group of strengthening cells in the base of each : oil- 
tubes 2 to 5 in tbe intervals, 5 to 10 on the commissural side. 
(Fig. 80.) — Inch C.yoeniculaceus, C. albi/lorus, and C.thapsoides 
of Nuttall in Ton*. & Gray, FI. i. 624. 
From the mountains of S. California to British Columbia, and extend- 
ing eastward through Nevada and Utah to Colorado and S. W. Wyoming. 
FI. April to June. 
This is Brandeg ee 800 and Tweedy 849 of Canby’s N- Transcontinental 
Survey, distributed as C.? anisaius. 
8. C. Fendleri Gray, PI. Fendl. 56. Low, subcaulescent: 
leaves oblong or ovate-lanceolate in outline, exceeding the pedun- 
cles, 2 to 8-pinnate, pinnm and segments 5 or 7, oblong and incised : 
umbels few-rayed, with no involucre, and involucels of oblong or 
lanceolate bractlets united at base and exceeding the flowers: fruit 
about 8 lines long, each carpel with 3 or 4 thin wings: oil-tubes 
sevei'al in the intervals, 4 on the commissural side. 
Gravelly hills, Arizona (Riifiby), and New Mexico (Fendler 274, New- 
berry, Tliurber), to W. Texas and Mexico [Bigelow, Wright, in Mex. 
Bound. Surv.);also Fort Lyon, on the Arkansas (Palmer). 
* * Seed-face very deeply concave. 
•j* Flozvers yellow. 
0. C. longipes Watson, King’s Rep. v. 124. Shortly cau- 
lescent, glabrous: leaves pinnate to bipinnate, the ultimate seg- 
ments oval and mucronulate: fruiting peduncles longer than the 
leaves, 4 to 10 inches long: umbels 5 to 10- rayed, with mostly no 
involucre, and involucels of subulate acuminate bractlets; rays 6 to 
15 lines long; pedicels 2 lines long: fruit 8 to 4 lines long, the 5 
carpel wings broad and thin, rather unequal: oil-tubes 3 in the in- 
tervals, 6 on the commissural side: seed-face strongly involute, 
nearly enclosing a central cavity. (Fig. 81.) 
