PARSLEY FAMILY. 357 



Coast Range Mountains: Napa Valley to Mendocino Co., ace. to 

 Bot. Cal. Mar. -Apr. Pr. June. Var. platycarpa Jepson. Pour 

 ft. high; fruit more broadly winged, 7 lines long.-^Vaca Mountains. 



2. L. dissecta Nutt. Stems many from a thick root, leafy at 

 base; leaves broad, 2 or 3 times ternate and then once or twice pinnate, 

 the segments inoised-pinnatifid; peduncles 1 to 2 ft. long; rays 2 to 5 

 in. long; involucre of few bracts or none; involucels of several lanceo- 

 late bractlets; flowers yellow or purplish; fruit oblong, 5 to 9 lines 

 long; oil-tubes none or very obscure. 



Coast Ranges and Sierra Nevada: Mendocino Co. and Lake Co., 

 ace. to Bot. Cal.; to be expected within our limits. Apr.-June. 



25. PEUCEDANUM L. 



Ours mostly low perennials of dry ground, either acaulescent or 

 short caulescent. Roots thick or fusiform. Plowers white or yellow, 

 in compound umbels. Involucre in ours none, except 2 species. 

 Involucels usually present. Pruit suborbicular to oblong, much 

 compressed. Lateral ribs with broad thin wings coherent until 

 maturity with those of the companion carpel. Oil-tubes 1 to several 

 in the intervals, 2 to several on the commissural side. (The ancient 

 Greek name.) 



Peduncles and pedicels conspicuously swollen at summit; bractlets none; 



flowers yellow ; fruit glabrous . . . . .1. P.leiocarptim. 



Peduncles not enlarged at summit. 

 Leaves ternate and pinnate, with broad leaflets. 

 Leaflets ovate in outline, serrate and more or less incised; fruit 3 to 3% 



lines long 2. P. parvifolium. 



Leaflets roundish, serrate, often 3-lolied but the lobes broad; fruit 6 to 8 



lines long, nearly or quite as broad 3. P. Hassei, 



Leaves decompound and much dissected into small linear or filiform 

 segments. 

 Flowers white; bractlets more or less united into a 1-sided involucel. 

 Fruit glabrous; oil-tubes solitary in the intervals. .4. P. macrocarpum. 

 Fruit tomentose or pubescent; oil-tubes 2 or 3 in the intervals, rarely 



solitary . 5. P. dasycarpum. 



Flowers yellow; bractlets distinct. 

 Oil-tubes solitary in the intervals. 

 Bract 1 or none; body of fruit on a distinct stipe, the stipe and body 



with a wing twice as broad as body 6. P. Vaseyi. 



Bracts 1 to 3; bractlets scarious-margined; wing of fruit scarcely as 



wide as body 7. P. utriculaium. 



Oil-tubes none in the intervals or indistinct; wing M to almost as wide 

 as body; bracts none. . . . 8. P. caruifolium. 



1. P. lelocarpum Nutt. Acaulescent, IJ to 2 ft. high, glabrous; 

 root fleshy, the epidermis horizontally corrugated; leaves 4 to 6 in. 

 long, once or twice ternate, then pinnate with about 5 or 7 leaflets; . 

 leaflets lanceolate or oblanceolate to broadly ovate, 1 to 2 in. long, 

 toothed at apex; peduncles often very stout, conspicuously enlarged 

 at summit and bearing an umbel of 6 to 18 very unequal rays; rays 

 more or less dilated at apex, 2 to 6 in. long in fruit; pedicels IJ to 2 

 lines long; bracts or bractlets none; flowei-s yellow; fruit 4 to 5 lines 

 long, 2J to 3 lines wide; wings about as broad as body of fruit; oil- 

 tubes broad, solitary in the intervals, 4 or 6 on the commissural face; 

 when 6, 4 are disposed in lateral pairs. — (P. robustum Jepson.) 



