2€4 UMBELLIFERZ. SANICULA.. 
PIMPINELLA. 
cordate 2-4 incbes broad, very deeply 3-5-lobed, the broad segments 
sharply toothed or somewhat cleft, the teeth bristle-tipped; upper leaves 
more narrowly lobed and laciniately toothed: umbel with 8-4 slender 
rays, involucre of 2-3 small leaf-like bracts, and involucels of 6-8 small 
entire bractlets; flowers yellow, the sterile ones nearly sessile: fruit be- 
coming distinctly pedicellate and divergent, obovate 1-2 lines long, covered 
with strong prickles: seed-face plane. Brit. Columbia to California. 
+ + Mature fruit sessile. 
++ Leaves pinnately divided. 
S. laciniata Hook & Arn. |.c. 147 Stems more or less branching, 
6-18 inches high; from a thickened root-stock: leaves mostly palmately 
3-5-parted, the divisions 1-2 pinnatifid, segments laciniately toothed, 
the teeth spinosely pointed: umbel 3-5 rayed, with invyolucre of 
leaf-like bracts, and involucels of lanceolate spinosely pointed bractlets; 
flowers yellow, the sterile ones on long pedicels: fruit somewhat naked 
below, more prickly above 144 lines long: seed-face deeply suleate some- 
what involute. California to the Willamette Valley, Oregon. 
S. Nevadensis Watson Proc. Am. Acad. xi, 189. Stem slender some- — 
times very short, simple or branching near the base,a foot or less high: 
leaves ternate, the divisions oblong-ovate, 3-5 lobed; the segments lobed 
or toothed: umbel with about 5 rays, which are sometimes branched and 
become 6-18 lines long in fruit; involucre of pinnatifid leaf-like bracts; in- 
volucels of small oblong acute bractlets: flowers yellow, the sterile ones 
_ pediceled : fruit prickly all over 14 lines long: seed-face plane. Dry open 
woods, Brit. Columbia to California and Nevada. 
++ ++ Leaves more or less pinnately divided. 
S. bipinnatifida Dougl. Hook. Fl. i, 258. Stemsa foot or more high 
from a‘thickened rootstock: with usually a pair of opposite leaves at base 
and 1-3 leaves above; leaves pinnately 3-7 parted, the divisions incisely 
toothed or lobed, decurrent on the toothed rhachis, teeth acute or slightly 
ointed ; umbel with 3-4 elongated rays: involucre of leaf-like bracts, and 
involucels of small narrow merely acute bractlets; flowers purple, in dense’ 
heads, the sterile ones on long pedicels: fruit prickly all over. Seed-face 
broadly concave with a prominent central longitudinal ridge. Common 
in open places Brit. Columbia to California. 
S. bipinnata Hook. & Arn. 1. c. 347. A foot or more high from a 
slender fusiform root: leaves twice or thrice pinnate, with divisions not at 
all decurrent, cuneate-oblong to ovate, incisely and mucronately toothed: 
umbel 5-4 rayed, with involucre of leaf-like bracts and involucels of a few 
small bractlets more or less united: flowers yellow: fruit. tuberculate at 
base, prickly above: seed-face deeply sulcate, more or less involute, with 
a central longitudinal ridge. California to the southern boundary of Ore- 
gon. 
* * Fruit neither prickly nor scaly. 
22 PIMPINELLA L. Gen. n. 366. 
Glabrous perennials with ternately or pinnately compound 
leaves, involucre and involucels scanty or none, and white or 
yellow flowers. Calyx-lobes obsolete: fruit oblong to ovate, 
glabrous, carpel with equal slender ribs: stylopodium depressed 
or cushion-like. Oil-tubes 2-6 in the intervals, 4-8 on the com- 
missure : seed somewhat dorsally flattened. 
P.: apiodora Gray Proc. Am. Acad. vii, 345. Smooth, ‘rather stout, 
