UMBELLIFER.E 



bels. Calyx-lobes obsolete. Fruit oblong or ovate, flattened 

 laterally if at all, glabrous. Oil-tubes 2-6 in the intervals 6-10 

 on the commissure. Seed with round or angled back and plane 

 to deeply concave face. 



* Leaves ternately decompound the broad leaflets simply toothed 

 or serrate: seed-face plane. 



L. Scoticttin L. Sp. 250. Stems simple, 1-2 feet high, somewhat 

 leafy, with glabrous inflorescence: leaves biternate; leaflets ovate, 1-2 

 inches long, coarsely toothed : umbel 8-15-rayed, with involucels of several 

 linear bractlets; rays at length 1-3 inches long : fruit narrowly oblong, 

 4-5 lines long, with prominent somewhat winged ribs: oil-tubes small 2 or 

 3 in the intervals, 6 on the commissure : seed flattened dorsally with 

 rounded back Alaska to Brit. Columbia, perhaps Washington, also on 

 the >i . Eastern coast. 



* * Leaves ternate-pinnately compound with leaflets laciniately 

 toothed or pinnatifid. 



L. scopnlorum Gray Proc. Am. Acad. vii, 347. Stout, 2-3 feet high, 

 more or less leafy, with puberulent inflorescence : lower leaves often very 

 large, twice or thrice ternate. then once or twice pinnate ; segments ovate, 

 laciniately pinnatifid; upper leaves often ternate-pinnate or simply pin- 

 nately compound: umbel of numerous rays with involucels of several 

 narrowly linear elongated bractlets: rays at length 2-3 inches long; pedi- 

 cels 6 lines long: fruit oblong, about 3 lines long, with somewhat promi- 

 nent conical stylopodium, and prominent somewhat winged ribs: oil- 

 tubes 3-5 in the intervals, 6-8 on the commissure: seed somewhat dor- 

 sally flattened, with angled or sulcate back and face with a broad shallow 

 cavity and central longitudinal ridge. In the coast mountains of Southern 

 Oregon, (Sierra county, California, and the mountains of Colorado 



L. tenuifolium Watson Proc. Am. Acad xiv, 293 Stem slender, 1-2 

 feet high, naked above the base or with a single leaf, bearing 1-3 glabrous 

 umbels: leaves small, ternate then pinnately decompound, finely dis- 

 sected with laciniately divided leaflets the ultimate segments linear and 

 short : umbel few-rayed, with involucels of 1 or 2 narrowly linear bract- 

 lets; rays about an inch long ; pedicels 2-3 lines long: fruit oblong lj^-2 

 lines long, with narrow ribs : oil-tubes 3-5 in the intervals, 6-8 on the 

 commissure. Union county, Oregon, to Colorado. 



L apiifolium Gray, Proc. Am. Acad. viii, 345. Stems 2-1 feet high, 

 few-leaved or almost naked; inflorescence puberulent: leaves mostly radi- 

 cal, ternate or biternate then once or twice pinnate; the segments ovate, 

 laciniately pinnatifid : umbel of numerous rays, with involucels of several 

 narrowly linear elongated bractlets ; rays at length about 2 inches long; 

 pedicels 2-1 lines long: fruit oval 1J&-2 lines long, with short conical stylo- 

 podium and narrow acute ribs : oil-tubes 3-5 in the intervals, 4-6 on the 

 commissure : seed with round back and more or less deeply concave 

 face, and a prominent central longitudinal ridge. In the mountains of 

 Oregon and Washington. 



L. Grayi C. & R. Rev. Umb. 88 Stems 1-2 feet high, with leaves all 

 nearly radical, and glabrous inflorescence: leaves ternate then pinnate; 

 the segments ovate, laciniately pinnatifid : umbel of numerous rays with 

 involucels of several narrowly linear elongated bractlets : rays 1-2 inches 

 long ;pedicels 2-4 lines long :fruit narrowly oblong, 2-2} lines long, with short 

 conical stylopodia and narrow prominent almost winged ribs : oil-tubes, 

 3-5 in the intervals, 8 on the commissure: seed strongly flatten eddorsally, 

 with angled back and face but slightly concave, with no central ridge. 



