Genus 12. 



CARROT FAMILY 



I. Cynomarathrum Nuttallii (A. Gray) 



Coult. & Rose. Nuttall's Dog-Parsley. 



King's Parsley. Fig. 3120. 



Scseli Nuttallii A. Gray. Proc. Am. Acad. 8 : 287. 



1876. 

 Peiiccdauinn graveolens S. Wats. Bot. King's Exp. 



128. 1871. 

 Pencedaituin Kingii S. Wats. Proc. Am. Acad. 22: 



474. 1887. 

 Cynomarathrnm Nuttallii Coult. & Rose, Contr. Nat. 



Herb. 7 : 245. 1900. 



Glabrous, scape striate, 6-20' high, as long as 

 the leaves or somewhat longer. Leaves all basal, 

 long-petioled, pinnately or 2-pinnately divided 

 into narrowly linear segments i" wide or less; 

 umbel unequally 4-20-rayed ; rays i'-ii' long; 

 involucels of several lanceolate at first partly 

 united bracts ; calyx-teeth short ; fruit oljlong, 

 glabrous, 4"-6" long, nearly 2" wide, the carpels 

 with narrow lateral wings, the dorsal and inter- 

 mediate ribs also somewhat winged ; oil-tubes 3-6 

 in the intervals, and 6-10 on the commissural side. 



In dry. often rocky soil western Nebraska, Wyoming and Utah. June~.\ug. 



13. PLEIOTAENIA Coult. & Rose, Contr. Nat. Herb. 12: 447. 1909. 



[PoLVTAEN-i.v DC. Mem. Omb. 53. />/. 13. 1829. Not Polylaenium Desv. 1S27.] 



[Pachilom.\ Raf. New Fl. N. A. 33. 1836. Not Pachyloma DC. 1828.] 



[PPhaiosperma Raf. loc. cit. 32. 1836.] 



Peremiial, nearly glabrous herbs, with pinnately decompound leaves, and compound 

 umbels of yellow flowers. Involucre none, or rarely of 1-2 linear bracts. Involucels of a 

 few subulate pubescent deciduous bracts. Calyx-teeth prominent, triangular. Petals obovate- 

 cuneate, with a long incurved tip. Stylopodium none. Fruit oval or obovate, much flattened 

 dorsally, thick and corky; dorsal and intermediate ribs obscure, the lateral ones with thick 

 wings which form a broad margin to the fruit, and are nerved toward the outer margin ; oil- 

 tubes 12-18, contiguous, with numerous smaller ones irregularly disposed in the thick peri- 

 carp. Seed flat. [Greek, many-fillets, or oil-tubes.] 



A monotypic genus of central North America. 



I. Pleiotaenia Nuttallii (DC.) Coult. & Rose. 

 Nuttall's Prairie Parsley. Fig. 3 121. 



Polytacnia Nuttallii DC. Mem. Omb. 53. pi. I3- 1829. 



Pleiotaenia Nuttallii Coult. & Rose. loc. cit. 448. 1909. 



Stem slightly scabrous, leafy, i-3 high; roots 

 fusiform. Leaves petioled, or the uppermost smaller 

 and sessile, pinnate, the segments deeply pinnatifid 

 or parted, l'-3' long, the lobes ovate, oblong or obo- 

 vate, dentate or entire ; umbels 6-12-rayed, i'-24' 

 broad; rays scabrous, i'-2i' long; pedicels finely 

 pubescent, i"-2" long ; fruit glabrous, 3"-5" long. 

 2'-T,h" broad, ' thick, the margins obtuse, the 

 central part of both carpels depressed when dry. 



Dry soil, Michigan and Wisconsin to Tennessee, Ala- 

 bama, Kansas, Louisiana and Texas. April-May. 



14. ANETHUM [Tourn.] L. Sp PI. 263. 1753. 



Annual glabrous erect herbs, with finely dissected leaves, and large compound umbels of 

 yellow flowers. Involucre and involucels wanting. Fruit oblong to elliptic, dorsally much 

 flattened, the lateral ribs winged, the dorsal ones slender, sharp. Oil-tubes solitary in the 

 intervals. [The ancient name.] 



Two Asiatic species, the following typical. 



