UN 



to 2 inches long, aciitt- oi' ()l)tii>c, tooti-jcd iiiul cleft: iiinhcl Imv^- 

 ped uncled, 8 to O-raycd, mostly naked; rays slender, spreading, *i 

 to 4 inches long; pedicels 2 to 12 lines long: fruit (not including 

 the attenuate hase ) ") to (3 lines long, about a line wide, with not \ erv 

 prominent ribs, and small groups of strengthening cells: stylopo- 

 dium and style but a quarter line long, the former short conical: 

 seed -face concave. ( Fig. 188. ) — O. i>revistv/Is Torr. A: Grn\-, Fl. 

 i. 038, in part. 



In the mountains, from S. California to Alasiia. and eastward lo Itali. 

 Colorado. Montana, and Lake Winnipeg {Moronm. Fl May and Junr. 



2. O. brevistylis DC. Prodr. iv. 282. Rather stout, vil- 

 lous-pubescent: leaves 2 to 8-ternate; leaflets 2 to 8 inches long, 

 acuminate, much cleft and toothed: umbel 4 to <)-rayed, with invol- 

 ucre and involucels of few bracts; rays stout, somewhat spreading, 

 1 to 2 inches long; pedicels 8 to 5 Viw^s long: fruit ( not including the 

 attenuation) 6 lines long, a line or mi)rc wide, with irore promi- 

 nent ribs, and large groui^s of strengthening cells: stylopodium 

 and style half line long, the former slender conical : seed-face 

 more deeply coiicave. (Fig. 184,) 



Throughout the northern states and Canada, extending southward 

 akmg the mountains to N. Carolina. Fl. May and .Tune. 



8. O. longistylis DC. Prodr. iv. 282. Stout, from sweet 

 aromatic roots, glabrous or slightly pubescent: leaves, umbels, and 

 fruit as in the preceding: stylopodium slender conical, half lijic 

 long, with style a line or more long: seed-face more deeply and 

 broadly concave. (Fig. 185.) 



Throughout the northeastern states and Canada, extending southward 

 to Virginia and Tennessee, and westward to Dakota an<l N. W. Territory 

 {^faf■o^^u). 



* * Pruit ii'/t/io/(t caudate atteitiiation at base. 



4. O. brachypoda Torr. in Durand, Pi. Pratt. H\). Stout, 

 from sweet aromatic roots, pubescent or sometimes glabrous: 

 leaves ternate'.y compound (often appearing pinnate after the tlrst 

 di\ision); leaflets an inch or so long, acute, laciniately lobed or 

 toothed: umbel 1 to 4-rayed, with involucre and in\olueels of 

 linear bracts, the latter ecpialling or exceeding the flowers; rays 

 \]/2 to 4c inches long; pedicels about a line long: fruit C to 8 lines 

 long, 2 lines wide, short attenuate at b.ise, rough-bristly on the 

 very prominent ribs; groups of strengthening cells large: stylopo- 



