71 
California, Folsom {M. K. Curran), Modoc county {Mrs- R- M. Austin)-, 
Oi’cgon {Cusick 1098). 
This form most evidently intergrades between P. triternatum and P. 
simplex, having the fruit outline of the former and the broad wings of the 
latter. As it merges into true P. triternatum, ho-wexer, by insensible 
gradations, and is quite distinct in fruit outline from P. simplex, we include 
it as a verity of the former. 
35. P. laevigatum Nutt. Torr. & Gray, FI. i. 627. Closely 
resembling the preceding species, but completely glabrous, a foot 
or so high, wdth triternate leaves and much reduced leaflets or 
segments, the latter but 8 to 9 lines long, and half a line wide; pedi- 
cels 4 to 5 lines long; fruit 4 to 5 lines long, to 2 lines broad, 
with wings as broad as body. (Fig. 66.) 
Along bluffs of the Columbia Eiver in Oregon {Henderson) and Wash- 
ington Territory {Howell, Suksdorf). 
36. P. Kingii Watson, Proc. Am. Acad. xxii. 474. Acau- 
lescent, glabrous: scape 6 to 18 inches high, a little exceeding the 
leaves: leaves pinnate or bipinnate; leaflets linear, elongated, cuspi- 
date., sometimes 2 inches long: umbel somewhat equally 4 to 20- 
rayed, with involucels of linear-lanceolate bractlets; rays inches 
long; pedicels 1 to 3 lines long: calyx-teeth evident: fruit oblong, 
4 to 5 lines long, 2 lines broad, narrowly winged, the dorsal and 
intermediate ribs also sometimes irregularly winged: oil-tubes 3 to 
5 in the intervals, 6 to 10 on the commissural side: seed somewhat 
sulcate on the back, with slightly concave face, (Fig. 67.) — Seseli 
Nuttallii Gray, Proc. Am. iVcad. viii. 287, in part. Musenmm 
tenuifolium Hook., not Nutt. P. graveolens Watson, King’s 
Rep. V. 128. 
Mountains of Utah and Colorado. FI July and August, 
Var. alpina. Dwarf, with stems 4 to 6 inches high, leaves 3 
inches long, mostly simply pinnate, with 3 to 5 pairs of leaflets: 
umbel 3 to 6-rayed : fruit linear-oblong, 2 to 3 lines long: oil- 
tubes very obscure, 1 or 2 in the intervals, 4 to 6 on the commis- 
sural side. — P. graveolens, var. alfmum Watson, King’s Rep. 
V. 129. 
East Humboldt Mountains, Nevada, 9,000 feet altitude {Watson 464). 
* * Leaves with lanceolate to orbicular segments. 
37. P. leiocarpum Nutt. Torr. & Gray, FI. i. 626. Acaules- 
cent, glabrous, 1 to 2 feet high, from a very long fleshy root: 
