.2f66 UMBELLTFEBiE. leibergia. 



GLYCOSJIA. 



yellow flowers. 



B. Americannm C. & B. Eev. TJmb. 115. Eadical leaves linear- 

 lianceolate, cauline ones very variable, oblong to linear, more or less clasp- 

 ing: rays unequal, 6-24 lines long, with involucre- of 3-5 unequal bracts 

 and involucels of 5-8 rather small ovate bractlets: pedicels short: carpel 

 with prominent ribs, oil-tuTDes continuous about the seed-cavity and one 

 jn each rib. Seed-face plane. Alaska to Yellowstone Park, perhaps 

 Washington. 



26 LEIBEEGIA 0. & B. Contr. Nat. Herb, iii, 675, t. xxvii. 



Slender glabrous acaulescent plants from a small globose root, 

 ternately divided leaves and irregular umbels of white flowers. 



'Calyx-teeth obsolete. Fruit flattened laterally, linear, beaked, 

 glabrous: stylopodium wanting. Carpels only slightly flattened 

 dorsally, with 5 filiform ribs, the 2 lateral a little more promi- 

 nent and turned inward. Oil-tubes small, solitary in the inter- , 

 vals, 2 on the commissure. Seed-faoe slightly concave but when 



-dry becoming more or less involute. 



L. orogeiiioldes 0. & E. I.e. Stem slender 6-20 inches high ; leaves 

 nearly as long as the flowering peduncle : leaflets linear, 1)^2-4 inches 

 long, entire or with a few teeth or linear lobes : rays of the umbel 3-10, 

 very slender, often spreading, 1-6 inches long ; umbellets with few fl wers 

 and fruits : involucre none ;involuCels of few small bracts that are somewhat 

 -united at base: fruit 4 lines long, flattened laterally but terete at base, 

 -terete and somewhat beaked at apex. Along small streams, Coeur d'Alene 

 Mountains Idaho, Spokane Co., Washington. 



27 OSMOBHIZA Jour. Phys. Ixxxix. 



Perennials from thick aromatic roots, with ternately decom- 

 pound leaves, ovate variously toothe>l leaflets, involucre and in- 

 volucels few-leaved or wanting and white flowers in few-rayed 

 ,-and few-fruited umbels. Calyx-lobes obsolete. Fruit linear to 

 .linear-oblong, caudate, attenuate at base, acute above, very 

 bristly on the ribs. Carpel slightly flattened dorsally or not at 

 .ail, nearly pentagonal in section, with equal ribs and thin peri- 

 carp. Oil-tubes obsolete in mature fruit. 



O. nuda Torr. Pao. B. B. Eep. iv, 93. Rtems rather slender, 1-3 feet 

 high, divaricately branched, somewhat pubescent or glabrous: leaves 

 -twice ternate ; leaflets 6-24 lines long, toothed and cleft : umbel long ped- 

 -uncled, 3-6-rayed, mostly naked; rays slender, spreading 2-4 inches long: 

 •pedicels 2-12 lines long : fruit with not very prominent ribs : stylopodium 

 .and style very short, seed-face concave. Very common in wooded dis- 

 -tricts. Alaska to California and the Eocky mountains. 



28 GLYCOSMA Nutt. T. &G, Fl. i, 639. 



Mostly tall perennials from thick aromatic roots with ter- 

 nately decompound leaves, ovate variously toothed leaflets, 

 mostly without involucre or involucels, and white flowers in few- 

 rayed umbels. Calyx-teeth obsolete. ■ Fruit linear to linear-ob- 

 long, not attenuate -at base; acute above, glabrous or somewhat 



