61 
side: seed-face with a slight central longitudinar ridge. (Fig. 47.) 
N. California and N. Nevada to N. W. Territory (JfacoMn) and Sas- 
katchewan. FI. May and June. 
We find that a good deal of this species has been distiibuted in her- 
baria as P. bicolor. 
>^12. P. eurycarpum. Caulescent, branching, a foot or two 
high, more or less pubescent, frequently from a much enlarged 
tuberous root: leaves ternate-pinnately decompound, with small 
linear cuspidate segments: umbel 3 to 12-rayed, with involucels of 
lanceolate acuminate often united bractlets; rays to 4 inches 
long ; pedicels 1 to 5 lines long: fruit broadly elliptical, glabrous, 
5 to 9 lines long, 3 to 4 lines broad, with wings as broad as body 
or broader, and filiform dorsal and intermediate ribs: oil-tubes 
large, solitary in the intervals, 2 on the commissural side. (Fig. 48.) 
— 1\ nudicaule., var. (?) ellipticum Torr. & Gray, Pacif. R. Rep. 
ii. 121. P. macrocarpum., var. ( ?) e^irycarpum Gray, Proc. Am. 
Acad. viii. 385. 
From the Sacramento in California to Oregon {Hall 210) and British 
Columbia (Macoun). 
The coarser foliage, shorter and broad- winged fruit, and less conspicu- 
ous involucels, are the more prominent characters which seem to entitle 
this form to rank as a species, rather than a variety of P. macrocarpum. 
“Skelaps” of the Spokane Indians, its very large starchy roots forming a 
valuable food. 
13. P, dasycarpum Torr. & Gray, FI. i. 628. Very short 
caulescent or acaulescent, with several stout peduncles 6 to 12 
inches high from a common root, tomentose-pubescent: leaves 
rather small, pinnately decompound, with numerous short linear 
segments: umbel somewhat equally 6 to 12-rayed, with involucels 
of linear-lanceolate more or less tomentose bractlets; rays 1 to 3 
inches long; pedicels 3 to 5 lines long: fruit nearly orbicular 
coarsely pubescent (sometimes becoming almost glabrous), 4 to 7 
lines long, 3)^ to 6 lines broad, v/ith thin membranous wings 
broader than the body, and filiform dorsal and intermediate ribs: 
oil-tubes large and solitary in the intervals (an occasional secondary 
one in the lateral intervals), 4 on the commissural side: seed deeply 
silicate beneath the oil-tubes, with plane face. (Fig. 49.) 
P . Pringlei C. & R. Bot. Gazette, xiii. 209. 
California, San Diego county {Pringle, Parry, Vasey), Lake and 
Eldoi'ado counties {M. K. Curran)-, New Mexico, Upper Gila (Greene). FI. 
April and May. 
