328 UMBELLIFER^. 



minal leaflets often 3-parted, all 1 in. long or less: umbel 6 40-rayed: 

 fr. ^4 in. long, 1^^ lines broad. — Eastward slope of the Sierra, in Plumas 

 and Nevada counties. 



22. LEPTOTJ)NIA, NuUall. Stout and tall (except n. 4) glabrous 

 subacaulescent perennials, with thick often very large fusiform roots, 

 piunately decompound leaves, and yellow or purple flowers. Fruit 

 strongly compressed dorsally, oblong or elliptical, with thick corky 

 lateral wings, the dorsal and intermediate ribs filiform or obscure: oil- 

 tubes 3—6 in the intervals, 4 — 6 on the face, mostly small, sometimes 

 obsolete. Seed thin, with plane or slightly concave face. 



* Oil-tubes obsolete or very obscure. 



1. L. (lissecta, Nutt.; T. & G. Fl. i. 630(1S40); Gray, Proc. Am. Acad, 

 vii. 348 (1868), under Ferula. Leafy at base, 1 — 3 ft. high: leaves broad, 

 1 ft. long, ternate and thrice pinnate; segments ovate or oblong, % — 1 in. 

 long, laciniate-pinnatifid and toothed, puberulent on the veins beneath 

 and along the margins: umbel 8 — 20-rayed, involucrate with few linear 

 bracts, the bractlets of the involucels more numerous: fl. yellow or 

 purplish: fr. sessile or nearly so, 5 — 9 lines long, about 3 lines broad: 

 seed face plane. — Throughout the State, both east and west. 



2. L. innltiflda, Nutt. 1. c. Near the preceding, but the leaves more 

 finely divided: umbels without involucre: carpels 4 — 6 lines long: seed- 

 face concave. — Only on the eastward slope of the Sierra. 



3. L. anoinala, C. & R. Rev. Umb. 53 (1888). Acaulescent, glabrous; 

 scape slender, ^^ — 1 ft. high, bearing a 3 — 6-rayed naked umbel: leaves 

 pinnate, with few distant narrowly linear divisions: rays of umbel 1 — 3 

 in. long; bractlets of involucels veiny, scarious-margined, more or less 

 united: fr. small, oblong, 4 lines long, 2 lines broad, the lateral ribs 

 considerably thicker than the body of the carpel, the dorsal slender- 

 filiform or obsolete: calyx«- teeth occasionally manifest. 



* * Oil-tubes 3 or 4 in the intervals, 6 on the face. 



4. L. Califoruica, Nutt. ; T. & G. Fl. i. 630 (1840) ; Gray, Proc. Am. 

 Acad. vii. 348 (1868), under Ferula. About 1 — 2 ft. high : leaves ternate 

 and pinnate or twice ternate; leaflets cuneate-obovate, 1 — 2 in. long, 

 usually 3-lobed, coarsely toothed above : stem with 1 or 2 leaves : umbel 

 15 — 20-rayed, naked or with 1 or 2 narrow bracts; bractlets 0; fr. 5 — 7 

 lines long, 3 — 4 lines broad; margin of carpels thinnish. the dorsal ribs 

 indistinct. — Hills of Kern Co. and northward along the Sierra. 



23. PEUCEDANUM, Theophrastus. Perennials of diverse habit, ours 

 mostly low and subacaulescent, with fusiform root. Leaves ternately or 

 pinnately dissected. Involucre 0; involucels usually present. Flowers 



