to rj-r;i\c'(l, with iii\ oIiul'Is of linear aiiiiniiiatc l>iactkis; rax'- 1 to 

 T) iiiclics l()n<j^; pedicels )i to S) lines Ioiil;^; Hovveis yellow: fruit nar- 

 rowly oblong, y to 14 lines lon<r, H to (> lines broad, witli winj^s 

 narrower tban boily, and very prominent dorsal and intermediate 

 ribs: oil-tubes solitar\-, \ery lar<^e (tilling tbe intervals), 'i on 

 tlie commissural side: seed-face somewhat conca\v'. (I'ig. 70.) 

 Dry rocky iiiouiaain bidos, Klickilal rouiiLy, Orcyoii iSiihstldif). 



ij 7. Low, shortly caulescent or acaulescent. from a thick (slont^Mti- I 

 loot, glabrous: leaves ternate or pinnate, with broad oblong or louiid 

 coarsely cuspidate-toothed leaflets: (lowers yellow: fruit wings very broad, 

 often several times broader than body: oil-tubes solitary in the inter- 

 vals (except in I\ Hdircllih- 



41. P. Euryptera Gray, Proc Am. Acad. vii. :US. Shortly 

 caulescent, rather stout, (j to 12 inches high: leaves ternate; leaflets 

 broadly cordate, somewhat lobod, coarsely n;ucronate-ti)othcd, i/j 

 to 1 inch long: umbel equally 8 to ir)-rayed, with involucels of 

 lanceolate bractlets; rays i4 to 2 inches long; pedicels lines long: 

 fruit nearl\- orbicular, emarginate at each end, glabrous, 5 to 7 

 lines in diameter, witii wings more than twice as broad as bod\-, 

 and pi-omincnt obtuse dors;d and intermediate ribs: oil-tubes 2 to 4 

 on the commissural side. ( 1' ig- Tl.) — Eiiryftera Iticida \utt. 

 Torr. A: Gray, Fl. i. ()2y. 



Gravelly hills. S. Califoruiii, and Tin son, Arizona iLeiniutm (i2i. 



42. P. Howellii Watson, Proc. Am. Acad. xx. )m\. Acau- 

 lescent, with peduncle 12 to 18 inches high: leaves biternatc to 

 biquinate; leaflets cuneate-orbicular to round-cordate, acutely 

 ilentate, often 8-lobed, (') to 12 lines long: umbel with few elon- 

 gated and divaricate fertile rays, with involucels of acuminate 

 lar.ceolatc bractlets; pedicels 4 lines long: fruit glabrous, broadly 

 elliptical or nearly orbicular, emarginate, with wings bioadcr than 

 body, 4 lines long: oil-tubes H or 4 in tbe intervals, 4 to 10 on the 

 commissural side. (Fig. 72.) 



Near Waldo, Josephin<> county. Oregon i lion; Ih. 



PI P. parrifolium Torr. A: Gray, Fl. i. (V^S. .Short caules- 

 cent, slender, with ;i solitarv peduncle 4 to 12 inches high: lea\ es 

 clustered near the base, usually huge (4 to (3 inches long), bipin- 

 nate (but the upper leaflets conlluent); leaflets broad, obtuse 

 (usuall) eniling truncately or emarginately between two divaricate 

 teeth), irregularly incised aiul with broad strongh cuspidate teeth: 



