Peucedanum. UMBELLIFER^E. 269 



From Puget Sound and Idaho to Mendocino and Placer counties. The acaulescent form 

 (P. leptocarpum, Nutt.) is the more frequent in California, and may perhaps be found to differ in 

 the form of the fruit, which sometimes at least is broadest near the base, narrowing upward. 



P. SIMPLEX, Nutt., of Utah, is very similar, but with leaves only ternate or biternate, fruit 

 orbicular, 5 or 6 lines long, emarginate at each end, the wings broader than the body, and the 

 ribs prominent. 



P. AMBIGUUM, Nutt., which includes P. leevigatum, Nutt., extends from Oregon and Washing- 

 ton Territory to Western Montana, and probably also occurs in Northern California. It is gla- 

 brous, a foot high or often much less : leaves with much dilated petioles, at least the lower ones 

 1 - 2-pinnate with long linear entire leaflets, the upper often more dissected : involucels very 

 small or none ; rays an inch or two long : fruit narrowly oblong, 4 lines long, a line wide, the 

 wing half the width of the seed ; oil-tubes solitary in the intervals, 2 broad and thin ones on the 

 commissure. 



P. FARINOSUM, Geyer, Hook. Jour. Bot. vi. 235, is a dwarf species of Oregon and Idaho, 

 which has not yet been collected in mature fruit. The short stems are slender, from a small 

 round tuber ; leaves twice or thrice pinnate, with linear entire leaflets ; flowers white, in small 

 open few-rayed umbels ; involucels of one or few small linear bracts. 



There is apparently at least another allied species among those used extensively by the Oregon 

 Indians, and which may extend into Northern California, but of which the fruit has not been col- 

 lected. It is low and acaulescent, with a very thick root, glabrous, the leaflets linear ; flowers 

 white (?), nearly sessile in the umbellets, with often a quite conspicuous involucel. 



+- -t- Fruit orbicular : leaflets ovate, toothed : glabrous. 



3. P. Euryptera, Gray. Shortly caulescent, 6 to 10 inches high, rather stout : 

 leaves ternate ; leaflets broadly cordate, somewhat lobed, coarsely and rnucronately 

 toothed, ^ to 1 inch long : rays 10 to 15, a half to an inch long, the pedicels short ; 

 involucels unilateral, of "several lanceolate bractlets : fruit 5 lines in diameter, emar- 

 ginate at each end, the wings broader than the body; oil-tubes solitary in the inter- 

 vals and on each side of the commissure. Proc. Am. Acad. vii. 348. Euryptera 

 lucida, Nutt. in Torr. & Gray, Fl. i. 629 ; Torrey, Bot. Mex. Bound. 70, t. 27. 



Gravelly hills near San Diego, Nuttall, Parry. 



4. P. parvifolium, Torr. & Gray. Very shortly caulescent, slender, 6 to 10 

 inches high : leaves biternate, deltoid in outline, 2 inches long, the divisions ovate, 

 laciniately lobcd and acutely toothed or pinnatifid : rays about ten, a half to an 

 inch long ; pedicels 3 or 4 lines long ; involucels of a few linear bractlets : calyx- 

 teeth acute, one or two usually prominent : fruit orbicular to broadly elliptical, 3 to 

 3| lines long, scarcely emarginate, the wings broader than the body ; ribs rather 

 prominent ; oil-tubes solitary in the intervals, 4 on the commissure. Fl. i. 628. 

 Ferula parvifolia, Hook. & Arn. Bot. Beechey, 348. 



Pine woods near Monterey (Douglas, Coulter, Parry) ; probably from the Sacramento to Santa 

 Barbara. 



A somewhat similar species, P. HALLIT, Watson, occurs in Oregon, but with leaves more oblong 

 in outline, pinnate, with deeply toothed or finely pinnatifid divisions ; fruit broadly elliptical, the 

 wing half as broad as the body ; oil-tubes 3 in the intervals, 4 or 6 on the commissure. 



2. Leaves decompound with narrowly linear segments and very broadly dilated peti- 

 oles : involucels consjncuous, of usually dilated scariously margined spatulate 

 or lanceolate bracts : flowers yellow ; calyx-teeth obsolete : fruit broadly ellip- 

 tical, glabrous : caulescent, finely puberulent. 



5. P. caruifolium, Torr. & Gray. Stems short, with elongated peduncles, 

 | to 1 ^ feet high : segments of the leaves \ to 2 inches long : rays to 3 inches 

 long ; bractlets of the involucels often lanceolate : fruit 3 or 4 lines long, 2 lines 

 broad, the ribs obsolete ; wings half as wide as the body : oil-tubes indistinct, 2 or 

 3 in the intervals, none on the commissure. Fl. i. 628. P. marginatum, Benth. 

 PL Hartw. 312. 



Central California, valleys and hillsides ; from Sacramento Valley to Santa Barbara, frequent. 



6. P. utriculatum, Nutt. More caulescent : leaves more finely divided, the 

 segments 1 to 6 lines long : bractlets rarely lanceolate, usually much dilated : fruit 



