266 UM BELLI FER.E. . Atigelica. 



oblique at base, 2 to 4 inches long, the lower sometimes lobed, unequally serrate 

 with acutisli teeth : umbels naked, often dense, the rays 1 to 3 inches long : fruit 

 broad-elliptical, 3 lines long by 2 to 2i broad, the lateral wings thin and the dorsal 

 acutish : aeed thin, flat on the face, tli^o solitary oil-tubes in channels on the back. 

 — Proc. Am. Acad. xi. ill. 



ill till) ("oust Ktiiigus, IVoiii Sail I'luiicibco to ftU'iulociiio County. 



3. A. lineariloba, Gray. Glabrous, stout, 2 or 3 feet high : leaves twice to 

 thrice (luiuatc, tlie Icallets linear, 1 or 2 inches long, cusi)idately acuminate, entire 

 or the lower ones 3-i)arted with the tlecurrent sometimes coarsely tootlied lobes 

 divaricate : umbels naked, the rays an iixdi or two h)ng : fruit smooth, 4 lines long 

 by two wide; lateral wings a little narrower than the seed, rather corky: oil-tubes 

 solitary, tlie lateral in pairs: seed nearly Hat on the face, channelled under the dmsal 

 oil-tubes. — I'roc. Am. Acad. vii. ;M7. 



Mono Pass {Bulandcr) ; in the Suulliein Siena Nevada, Rolhruck. The thick root is sai.l not 

 to be sweet-scented. 



21. CYMOPTERUS, Raf. 

 Calyx-teeth prominent or often small or obsolete. Stylopodium depressed. Fruit 

 ovate or elliijtical, obtuse or retuse, dorsally llattened, the lateral ribs and some or 

 all of the dorsal ones expanded into more or less thickened ami corky wings ; oil- 

 tubes narrow, one to several in the intervals. Seed dorsally flattened, and more or 

 less concave on the face. Carpophore 2-parted. — Perennials, mostly low and often 

 cespitose, with a thickened root ; leaves pinnately and finely decompound, with 

 small narrow segments; umbels usually both involucrate and involucellate, few- 

 rayed ; flowers white or yellow. 



Natives of Western North America, about 15 species, most of tliem confined to the region 

 between the h'ocky Mountains and the Siena Nevada. Tlie roots are extensively used by the 

 Indians lor I'ooiL 



* Shurdi/ caulescent : Jlowers i/ellaio. 



1. C. terebinthinus, Torr. & Gray. Erect, G to 18 inches high, smooth, leafy 

 at base : leaves rather rigid, thrice innnate ; leallcts a line long or less, linear-oblong, 

 acute, entire or 1 - 2-to(.thed : fertile rays 4 ti) fi, unetjual, | to 2 inches long ; invo- 

 lucre a single linear leallet or wanting, tlie inv<ducels of several short linear bracts ; 

 pedicels 1 to 2 lines long : fruit 3 or 4 lines long, 2 or 3 broad, the rather thin 

 corky ribs a line broad ; calyx-teeth evident : oil-tubes 2 to 4 in the intervals, 4 to 

 10 on the commissure: carp()])li()re ))crsistent. — Fl. i. 024. Stlinam terehliithinum, 

 Hook. Fl. i. 2G0, t. 1)5. C. /witiculaccus, C. albijlorus, ^ C. thupsoides, Kutt. in 

 Torr. & Gray, Fl. i. 024. 



One of the most widely distributed of the species, ranging from tlie Cascade Mountains in 

 Washington Territory to Ebbett's Pass (Brewer, at 9,000 feet alt.), and the Yosemite Valley 

 (Oraij), and in the mountains eastward to Colorado. As in other species the number of develoi)e(l 

 dorsal wings is variable. 



* * Acanlescent or nearly so : flowers U'hite. 

 +- Xul alj'iiie. 



2. C. montanus, Is'utt. Nearly acaulescent: leaves clustered at the summit of 

 the very short stein, smooth and glaucous, pinnate or bipinnate, the oblong seg- 

 ments pinnatihd with oblong obtuse entire or toothed lobes : ]>ed uncles 1 to 4 

 inches high, rather stout : involucre and involucels of broad and membranaceous 

 bracts, united at base, the involucre often short and cuji-like : rays about half an 

 inch long or less ; pedicels a line or two long : fruit 3 to 6 lines long, with thin flat 

 wings 1 or 2 lines broad ; calyx-teeth small ; oil-tubes 3 in the intervals, 6 to 8 on 



