272 



UMliELLIFER.E. Ftr,d,i. 



* * Ltaves more coarsely divided. 



3. F. Californica, Gray. Habit of the i)iecediiig : leaves teniate and pinnate, 

 or twiee ternaW, the leallels ciuieale-obovate or -oblong, an inch or two long, usu- 

 ally 3-lubeJ, coar-sely tuollied above, smooth : rays 2 to -t inches long ; involucre of 

 J or 2 narrow eloiigateil bracts; involueels wanting: fruit 5 to 7 lines long, 3 or 4 

 wide, a little narrower below, on pedicels 2 to 4 lines long ; dorsal ribs indistinct 

 except at the ends ; oil-tubes distinct, somewhat anastomosing ; wing thinner than 

 in the preceding. — Proc. Am. Acad. vii. 348. Leptoicenia Cali/ornica, JMutt. 1. c. ; 

 Torrey, Pacif. K. Eep. iv. U2. 



Napa Valley to Meiuloiiiu) Coiuity. 



25. DAUCUS, Tmuii. Cauiiot. 

 Calyx 5-toothed. Disk and stylopodium mostly small and depressed. Fruit 

 ovate or oblong, the carpels semiterete or somewhat dorsally ilattened; primary ribs 

 filiform and bristly, the intermediate more prominent and winged with a row of 

 more or less united barbed prickles; oil-tubes solitary under the wings. Seed flat 

 on the face or nearly so. — Annual or biennial, setosely hispid; leaves pinnately 

 decompound with very small segments ; involucral bracts foliaceous ami divided, 

 those of the involueels entire or 3-lobed ; outer rays of the umbels often longest and 

 connivent over the inner ones in fruit ; flowers mostly Avhite. 



Some 30 or more species inhabit the northern temperate legions of the Old World, of which 

 tlie cultivated Carrot, D. C'arota, is in many places naturalized, becoming a noxious weed. The 

 only recognized native species of tlie United States is the following. 



1. D. pusillus, Michx. Annual or biennial, erect, a foot or two high, retrorsely 

 liispid : leaves bipinnate, the segments pinnatifld, with short narrowly linear lobes : 

 rays 2 to 6 lines long, nearly ecjual ; involucre bii)inuatitid, as long as the small 

 ninbel ; involueels (■([ualling the yellowish flowers: fruit 1^ to 2 lines long, shortly 

 pedicellate, the prickhis usually equalling or exceeding the widtli of the body : seeil 

 somewhat concave on the face. 



Widely distributed, ranging from tlie S. Atlantic States to the Pacific, and on the western 

 coast from Nootka Sound to Mexico. It has also been found in N. Patagonia and the Sandwich 

 Islands. A i)eculiar form was collected by Dr. Torrey near San Francisco, very low and scarcely 

 caulescent, the stout ]ieduncles 2 or 3 inches long ; fruit 1 to 1^ lines long, in dense subglobose 

 Leads, the rays being obsolete. 



26. CAUCALIS, Linn. 



Calyx-teeth prominent. Stylopodium thick and conical. Fruit as in Dauctts, but 

 somewliat more laterally (compressed, and the seed involute or deeply channelled. — 

 Annuals, mostly hispid ; leaves dissected ; umbels few-rayed, often oiiposite the 

 leaves or sessile ; flowers white or purplish. 



About 20 si)ecies, chiefly of the Mediterranean region, one or two widely naturalized. 



1. C. nodosa, Hudson. Decumbent, branching only at base, the st(;ms 1 or 2 

 feet long, ri'tror.scly hispid: Icavcis pinnate with pinnatilid divisions: umbels naked, 

 opposite to the leaves, nearly sessile, of 2 or 3 very short rays: fruit ovate-oblong, a 

 line long, entirely covered with rough tubercles or usually Avith stout prickles barbed 

 or bent at the point : seed involute. 



Native of Europe and N. Africa, introduced into Chili and Peru, and thence into California : 

 seen only from around San Francisco, Holder, Kel/oyy. 



2. C. microcarpa, Hook & Arn. Erect, .slender, 6 to 15 inches high, nearly 

 glabrous : leaves much dissected, slightly hispid : umbels apparently sessile at the 



