632 



AMMIACEAE. 



Vol. II. 



2. Cogswelliadaucifolia (Nutt.) M.E.Jones. Carrot-leaved Parsley. Fig. 3118. 



Peucedanum daucifolium Nutt, ; T, & G. Fl. N. 



A. 1 : 627. 1840. 

 Peucedanum foeniculaceum daucifolium T. & 



G. Fl. N. A. 1 : 627. 1840. 

 Cogswellia daucifolia M. E. Jones, Contr. 



West. Bot. 12: 34. 1908. 



Tomentose-pubescent, or becoming nearly 

 glabrous ; peduncles 4-10' high, usually 

 exceeding the leaves. Roots stout and 

 deep; leaves very finely dissected into short, 

 linear or filiform acute lobes and segments, 

 the primary divisions ternate or pinnate ; 

 petioles strongly sheathing at the base; 

 umbels unequally 3-12-rayed, the rays l'- 

 i¥ long; bractlets of the involucels tomen- 

 tose, united for more than half their length, 

 withering; flowers yellow; pedicels 2"-^" 

 long in fruit; fruit broadly oval, glabrous, 

 about 3" long, the lateral wings narrower 

 than the carpel, dorsal and intermediate 

 ones rather prominent ; oil-tubes 1-3 in the intervals. 



Prairies and plains, Missouri and Nebraska to Texas. March-April. 



3. Cogswellia foeniculacea (Nutt.) Coult. &Rose. Hairy Parsley. Fig. 3119. 



Ferula foeniculacea Nutt. Gen. i : 183. 1818. 



Lomatium villosum Raf. Journ. Phys. Eg. loi. 1819. 



Cogswellia villosa Spreng. ; Roem, & Schultes, Syst. 6 : 588. 

 1820. 



Cogsivellia foeniculacea Coult. & Rose, Contr. U. S. Nat. 

 Herb. 12 : 449. 1909. 



Tomentose-pubescent; peduncles 3-8' long, exceeding 

 the leaves. Roots long and deep ; leaves very finely dis- 

 sected into narrowly oblong obtuse lobes and segments, 

 the primary divisions mostly ternate ; umbel 4-10-rayed, 

 the rays 4"-io" long in fruit ; bracts of the involucels 

 lanceolate, tomentose, or finely pubescent, separate or 

 nearly so; flowers yellow; fruit oval, finely pubescent, 

 3"-3*" long, about 24'' broad, the lateral wings nar- 

 rower than the carpel, the dorsal and intermediate ribs 

 prominent ; oil-tubes 3-4 in the intervals. 



Plains and dry soil, North Dakota to Assiniboia, Wyoming, Nebraska and Texas. April-May. 



12. CYNOMARATHRUM Nutt. ; Coult. & Rose, Contr. Nat. Herb. 7 : 244. 1900. 



Perennial, acaulescent herbs, with stout rootstocks, pinnately compound leaves and 

 yellow flowers in compound cymes. Involucre mostly wanting. Involucels of a few narrow 

 bracts. Calyx-teeth evident. Fruit oblong, strongly flattened dorsally, the carpels with 

 sharp prominent dorsal and intermediate ribs, the lateral ribs broader and winged ; oil-tubes 

 usually 3-5 in the intervals and several on the commissural side. Stylopodium flat, evident. 

 Seed-face flat. [Greek, dog-parsley.] 



Six known species of the western United States, the following typical. 



