mdsenium. UMBELLIFEILE. 265 



BUPLEURUM. 



2-3 feet high: leaves mostly radical, 2-3-ternate, the cuneate-ovate leaflets 

 laciniately pinnatifid and toothed, an inch long: umbel long-peduncled, 

 6-15-rayed ; rays 1-2 inches long, hispidly puberulent : flowers white or 

 pinkish : fruit broadly ovate : oil-tubes numerous in the intervals, 8 or 

 more on the commissure. From San Francisco to Eastern Nevada. 



Var. nudicaulis Gray 1. c. viii, 385. Small; stem scapiform, almost 

 leafless, scarcely a foot high. Oregon Hall 1871, not since found. 



23 MUSENIUM, Nutt. T. & G. Fl. i, 642. 



Dwarf resinous dry ground perennials, from thick elongated 

 roots, with pinnate decompound leaves, no involucre and invol- 

 ucels of a few r narrow bracts. Calyx-lobes prominent. Fruit 

 ovate or ovate oblong, carpel with equal filiform ribs, and thin 

 pericarp : stylopodium depressed. Oil-tubes usually 3 in the 

 intervals, the middle one the largest, 2-4 on the commissure. 

 Seed-face broadly concave. 



M. divaricatnm Nutt. 1. c. Decumbent, glabrous: stem short, dicho- 

 tomously branching from the base: leaves bipinnatifid, with winged 

 rhachis ; segments 3-5-toothed : peduncles 2-5 inches long: umbel 10-25 

 rayed; rays 3-9 lines long, pedicels short: fruit smooth or nearly so, about 

 2 lines long; oil-tubes 3 in the interval-, with accessory ones beneath the 

 ribs, 4 on the commissure : Seed terete, with rather deeply concave face. 

 From the plains of the upper Missouri to Oregon and Brit. Columbia. 



24 EULOPHUS Nutt. DC. Prodr. iv, 248. 



Glabrous perennials from deep-seated fascicled tubers, 1—5 

 feet high, with pinnately or ternately compound leaves, narrowly 

 linear to oblong-linear mostly entire leaflets, the terminal one 

 elongated, involucre and involucels of several lanceolate acumi- 

 nate usually scabrous bractlets and long-peduncled umbels of 

 white or pinkish flowers. Calyx- lobes prominent. Fruit ovate 

 to linear-oblong glabrous. Carpel with equal filiform ribs, and 

 thin pericarp. Stylopodium conical, with long and recurved 

 styles. Oil-tubes 1-5 in the intervals, 4-8 on the commissura 

 and a small group in the parenchyma of the commissural sulcus. 

 Seed-face broadly concave, with a central longitudinal ridge. 



E. Bolanderi C. & R. Rev Umb. 112. Stems slender, 1-2 feet high; 

 leaf divisions more or less pinnately compound ; ultimate divisions narrowly 

 linear, 6-18 lines long, the terminal ones sometimes much longer, J^-l line 

 wide : uppermost leaves simple : umbel 10-25-rayed, with prominent in- 

 volucre and involucels of scarious ovate-lanceolate abruptly long acumi- 

 nate bractlets, longer than the pedicels, ravs 5-10 lines long; pedicels 1-2 

 lines long: fruit oblong: oil-tubes small 2-5 in the intervals, 6 on the 

 commissure. Southeastern Oregon to California. 



25 BUPLEURUM. L. Gen. n. 328. 



Calyx-lobes obsolete. Fruit oblong with rather broad com- 

 missure. Carpel with equal very slender or prominent ribs, 

 Stylopodium prominent and flat, Oil-tubes wanting or contin- 

 uous about the seed-cavity. Ours perennial from a branching 

 caudex, with simple entire clasping or perfoliate stem-leaves and 



