258 UMBELLIFERAE. 



Sanicula bipinnatifida Dougl. Stems 20-40 cm. high, stout; leaves mostly 

 basal, pinnately 3-7-parted, the divisions incisely toothed or lobed, decurrent 

 on the rachis forming a wing; umbel 3-4-rayed; involucral bracts leaf-like; 

 involucels narrow, acute; flowers purple or yellow, in dense umbellets, the 

 sterile ones pedicelled; fruit 3 mm. long. 



Prairies, Vancouver Island to California. First collected by Douglas at 

 Fort Vancouver. 



Sanicula howellii Coult. & Rose. Stems stout, 20-30 cm. high, sometimes 

 tufted; leaves thick, orbicular, palmately 3-5-lobed, incisely toothed and 

 cleft, the teeth mucronate; umbels few-rayed, the involucral bracts leaf-like; 

 involucels large, equalling or exceeding the dense umbellets; flowers yellow; 

 fruit 3-4 mm. long, bristly all over. 



In drifting sand, often half buried, Vancouver Island, British Columbia, 

 to Oregon. First collected by Howell at Tillamook Bay, Oregon. 



Sanicula septentrionalis Greene. Erect, slender, 10-35 cm. high; basal 

 leaves few, small, ternate or biternate, the obovate segments cleft or toothed; 

 cauline leaves few, more sharply toothed; peduncles arising singly along the 

 stem; umbels with 3-5 rays; involucre of pinnatifid leaf-like bracts; fruiting 

 rays 1.5-3.5 cm. long; flowers yellow; fruit 4 mm. long. 



Prairies, Vancouver Island, British Columbia, to northern California. 



340. DAUCUS. Carrot. 



Annual or biennial herbs; leaves pinnately decompound; bracts 

 of the involucre foliaceous and cleft; flowers white; calyx- teeth 

 obsolete ; fruit oblong, flattened dorsally ; primary ribs of the car- 

 pel 5, slender and bristly, the secondary 5-winged, each bearing a 

 single row of barbed prickles; stylopodium depressed or none; 

 oil-tubes solitary in the intervals. 



Annual, 10-60 cm. high; umbel small. D. pusillus. 



Biennial, 60-90 cm. high; umbel large. D. carota. 



Daucus pusillus Michx. Annual; herbage bristly pubescent; stems slender, 

 10-30 cm. high; leaves pinnately decompound, the ultimate segments narrowly 

 linear; umbels small, 2-5 cm. broad; fruit 3-5 mm. long. 



Dry fields and prairies, common. 



Daucus carota L. Wild Carrot. Biennial; herbage bristly; stem stout, 

 60-90 cm. high; leaves pinnately decompound, the ultimate segments lanceo- 

 late, cuspidate; umbel 5-12 cm. broad; fruit 3-4 mm. long. 



The wild form of the cultivated carrot, very troublesome as a weed. The 

 flowers are usually white, rarely rose-colored or purple. 



341. CAUCALIS. 



Mostly hispid annuals; leaves pinnately dissected with very 

 small segments; flowers white; calyx- teeth prominent; fruit 

 short, ovate or oblong, compressed laterally ; carpel with 5 filiform 

 primary ribs with spreading bristles and 4 prominently winged 

 secondary ones with barbed or hooked prickles; stylopodium 

 thick, conical; oil-tubes solitary in the intervals. 



Caucalis microcarpa Hook. & Arn. Annual, erect, branched, 8-20 cm. tall, 

 more or less hairy, leaves pinnately much dissected, the ultimate segments 



