250 UMBELLIFERJ?. PASTIN-ACA. 



COL PTERA. 



7 PASTINACA Tourn. L. Gen. n. 362. 



Calyx-lobes obsolete. Fruit oval; -very much flattened, glab- 

 rous. Carpel with broad lateral wings continuous to those of the 

 opposite carpel, and strongly nerved towards the outer margin. 

 Stylopodium depressed but prominent. Oil-tubes small, solitary 

 in the intervals, 2-4 on the commissure. Seed very much flat- 

 tened dorsally. Tall stout biennial herbs with pinnately com- 

 pound leaves and yellow flowers. 



P. SATIVA L the common parsnip is introduced almost everywhere. 

 The leaflets are ovate to oblong and cut-toothed. 



8 COLOPTKRA C. & R..Rev. Umbelif. 49. 



Dwarf sandy ground plants w r ith small leaves, no involucre 

 involucels of foliaceous more or less united bractlets and yellow 

 flowers. Calyx-lobes obsolete or evident. Fruit ovate, glabrous. 

 Carpel with dorsal and intermediate ribs filiform or winged and 

 approximate ; lateral wings broad very thick and corky, coherent 

 till maturity with those of the other carpel forming a broad 

 corky margin to the fruit usually thicker than the fruit proper. 

 Oil-tubes very small, 4-8 in the intervals, 8-14 on the commis- 

 sure. Seed very flat with plane or slightly concave face. 



C. Parryi C. & R. 1. c 50. Acaulescent, 2-6 inches high: leaves 

 small,. ovate in outline, bipinnate with very small oblong segments: in- 

 volucels of slightly united bractlets: fruit with prominent corky 

 and undulate dorsal and intermediate wings. N. W. Wyoming, to be 

 looked for in Idaho. 



9 LEPTOT^ENIA. Nutt. T, & G. Fl. i, 629. 



Stout glabrous short-caulescent perennial herbs with thick 

 often very large fusiform roots, usually pinnately decompound 

 leaves, involucre of few bracts or none, involucels of numerous 

 small bractlets and yellow or purple flowers. Calyx-lobes obso- 

 lete or evident. Fruit oblong-elliptical, glabrous. Carpel 

 with dor?al and intermediate ribs filiform or obscure and ap- 

 proximate ; lateral wings broad very thick and corky, coherent 

 until maturity with those of the other carpel, commissural face 

 with a prominent central longitudinal ridge left after separation 

 from the carpophore. Oil-tubes 36 in the intervals 4-6 on the 

 commissure, mostly small, sometimes obsolete. Seed very flat, 

 with plane or slightly concave face. 



* Oil-tubes obsolete or very obscure. 



L. dissecta Nutt. 1. c 630. Ferula dissolnta Watson Sot Cal. i, 211. 

 Stems stout, 1-3 feet high, leafy at base : leaves broad, a foot or so long, 

 ternate and thrice pinnate : segments ovate or oblong 6-12 lines long pin- 

 natifidly laciniate-lobed and toothed, puberulent on the veins and margins; 

 umbel 8-20 rayed, with an involucre of few linear bracts, involucels of 

 several linear bractlets ; rays 2-5 inches long : flowers yellow or purplish ; 

 fruit sessile or nearly so 5-9 lines long, about 3 lines broad : seed-face 

 plane. Brit. Columbia to California. 



