LEPTOT^NIA, UMBELLIFER^E. 251 



PEUCEDANUM. 



L. mnltiflda Nutt. 1. c. Ferula multifida Gray. Stems 1-2 feet high, 

 somewhat spreading, leaves ternate and pinnate : umbels mostly without 

 involucre, pedicels of the fruit 3-12 lines long: fruit 4-6 lines long: seed- 

 face concave. Brit. Columbia to California, Utah and Montana. 



* * Fruit with oil-tubes and pedicels. 



L. Watsoni C, & R. 1. c. 52. Low, a foot high or less, rather stout, 

 somewhat branching: leaves few and small, at or near the base, ternate- 

 pinnately decompound, the ultimate segments very small, ovate and cus- 

 pidate : umbel with 5-10 variously elongated divaricate rays,- no involucre 

 and involucels of few setaceous bractlets: rays 2-4 inches long: fruiting 

 pedicels about 6 lines long and divaricate; fruit 6 lines long : oil-tubes 3 in 

 the intervals: seed face concave. In the Wenatchee region, Washington. 



L. minor Rose in Herb. Stems about a foot high, glabrous : leaves 

 very much dissected, the alternate segments linear or filiform : umbel 8-20- 

 rayed, with no involucre, and involucels of several linear accuminate 

 bractlets ; rays 3^-4 inches long; flowers purple: fruit 6-9 lines long as long as 

 the pedicels 4-6 lines broad ; wings' very corky margined : oil-tube prominent, 

 3 in the intervals of the distinct dorsal and intermediate ribs, 4 on the 

 commissure. On stony hillsides in the John Day country, Oregon. 



L. purpurea C. & R. 1. c. Ferula purpurea Watson Stout many- 

 stemmed from a large thick root; stems 2-4 feet high, whole plant glau- 

 cous with a white bloom: leaves ample very finely dissected, ultimate 

 segments linear or filiform umbel many rayed with no involucre and in- 

 volucels of several bractlets rays 3-4 inches long; flowers purple: fruit 

 9-12 lines long as long as the pedicels; 5-6 lines broad with very promi- 

 nent corky margins to the wings : oil-tubes prominent. 3 in the intervals 

 of the distinct dorsal and intermediate ribs, 4 on the commissure." On 

 rocky hillsides along the Columbia river, near the mouth of the Klickitat. 



L. Californica Nutt. 1. c. 630. Ferula Calif omica Gray. Rather 

 .stout. 1-3 feet high, with 1 or 2 stem leaves: leaves ternate and pinnate 

 or twice ternate; leaflets cuneate-obovate 1-2 inches long, usually 3-lobed, 

 coarsely toothed above: umbel 15-20 rayed, with involucre of 1-2 narrow 

 bracts or none and no involucels; rays 2-4 inches long, y^edicels 2-4 lines 

 long ; fruit 5-7 lines long, 3-4 lines broad, with a thinner margin than any 

 other species ; dorsal and intermediate ribs distinct : oil-tubes 3-4 in the 

 intervals 6 on the commissure. On dry hillsides, Southern Oregon to 

 California. 



10 PEUCEDAXUM Koch Umb. f. 28 and 29, L. Gen. n. 339. 



Short caulescent or acaulescent perennial or biennial herbs with 

 fusiform or tuberous roots, ternate or pinnate to dissected leaves, 

 no involucre, involucels usually present, and yellow, white or 

 pinkish flowers. Calyx-lobes obsolete or evident. Fruit oblong 

 to suborbicular. Carpel with dorsal and intermediate ribs fili- 

 form and approximate ; lateral wings broad and thin, coherent 

 till maturity with those of the other carpel, forming a broad, 

 membranous wing to the fruit; commissural face without a 

 prominent longitudinal ridge alter separation from the. carpo- 

 phore. Oil-tubes 1-8 in the intervals, 2-10 on the commissure. 

 Seed flat with plane or slightly concave face. 



I. Mostly low., iroia globose tubers : leaves small more or less dis- 

 sected, with short segments: wings oi the fruit narrow: oil-tubes 



