PARSLEY FAMllA. 351 



upper leaves on short petioles or sessile, the leaflets 3; rays 4 to 12 

 lines long; fruit J to f lines long. 



An escape frona gardens, common in marshes: Monterey; Soquel 

 Creek near Skyland, ace. to Davy; Berkeley; Suisun Marshes. 

 July-Aug. 



13. CICUTA L. Watkk Hbmlock. 

 Tall branching glahrous perennials growing in marshes or by 

 stream banks. Eootstocks short and erect, or horizontal and branch- 

 ing. Leaves pinnately or ternately compound. Flowers white, in 

 compound umbels. Calyx-teeth somewhat prominent. Involucre 

 present or none. Involucels of small bractlets. Fruit oblong to 

 orbicular, glabrous. Bibs corky, broad but low, the lateral in cross- 

 section evidently larger than the intermediate and dorsal. Oil-tubes 

 2 on the face, solitary in the intervals. (Classical name of the Hem- 

 lock, which was given to criminals, and sometimes to philosophers, 

 as poison.) 



Involucre none or of a single bract; fruit 1 to nearly 1^ lines long; species 

 of hill streams : var. Californica of 1. C. virosa. 



Involucre of several to many lanceolate bracts; fruit nearly 2 lines long; 

 salt marsh species. . . . . . 2. C. Bolanderi. 



1. C. virosa L. var. Californica C. &. E. California Water- 

 Hemlock. ' Stems about 3 ft. high; rootstock horizontal, much 

 branched, giving off below coarse fibrous roots; radical leaves pinnate 

 or partly bipinnate below, IJ to 2J ft. long, on long (J to IJ ft.) 

 petioles; leaflets ovate-lanceolate or lanceolate, sen-ate, 3 to 4 in. long, 

 often deeply 1-lobed on one side towards the base; rays somewhat 

 unequal, IJ to 2J in. long; pedicels 2 to 4 lines long; involucre none, 

 or merely 1 narrow bract; bractlets several, ovate, acuminate; fruit 1 

 to IJ lines long with narrow not depressed oil-tubes, those on the face 

 approximate near the median line. — (C. Californica Gray.) 



Margins of streams in the region of the Coast Eedwood: Oakland 

 Hills; San Francisco; Santa Cruz; Monterey. July-Aug. 



2. C. Bolanderi Wats. Eootstock vertical or nearly so; stem 

 branched above, seldom less than 6 ft. high, often 3 or 4 ft. higher, 

 with large radical and cauline bipinnate leaves 2 ft. long or less; leaf- 

 lets lanceolate, serrate, 2 in. long; bracts and bractlets lanceolate, the 

 former often scarious-margined; rays 1 J in. long, subequal, pedicels 2 

 lines long; fruit orbicular, 2 lines long, prominently ribbed, the quite 

 mature carpels rather strongly concave on the face, thus appearing 

 somewhat lunate; oil-tubes broad, depressed in the channeled seed. 



A tall and conspicuous plant in the Suisun Marshes; also found in 

 the Alvarado Marshes aco. to Dr. Behr. Sept. -Oct. 



14. AMMI L. 



Erect branching glabrous biennial, with slightly fiisiform roots and 

 dissected decompound leaves. Flowers white in compound umbels. 

 Bracts parted into filiform segments. Bractlets lanceolate, acuminate. 

 Flowers white, in a terminal compound umbel with long rays and 



