UMBELLIFERyE. (PAKSLKY FAMILY.) 119 



less, linear-oblong, eutire, or 1 to 2-toothed : involucre a sin/;le linear leaflet 

 or wanting ; involucels of several short bracts : oil -tubes 2 to 4 in the intervals, 

 4 to 10 on the commissure. — Fl. i. G24. C. fteniculacens, Torr. & Gray. Colo- 

 rado and northward, thence westward to California and Washington. 



* * Flowers white. 

 ■*- Peduncles shorter (sometimes longer in No. 3) than the leaves. 



3. C. montanUS, Torr. & Gray. Boot long and Jleshij: stem 2 /o 6 inches 

 high: leaves glaucous, ovate in ontUne, hi pinna t el i/ divided; segments rather 

 few and distant: involucre and involucel somewhat companulate, scarious, ahout 

 5-parted : flowers polygamous : fruit with membranous wings ; oil-tubes 4 on the 

 conunissure. — Loc. cit. Colorado, nortliward and westward. 



4. C. glomeratUS, Kaf. Boot thick and fusiform: stem 3 to 8 inrhes 

 high; caudex bearing the leaves and peduncles at the summit: leaves on lonr; 

 petioles, ternateh) divided and bipinnatifid : leaflets of the palmatel if .') to 7-partfd 

 involucre coherent at base and partly adnate to the rays of the umbdiets: fruit 

 with thickened and somewhat spong>i icings; oil-tubes 3 to 4 in the intervals, 

 about 8 on the commissure. — Colorado and northward, also eastward along the 

 Missouri and Arkansas Rivers. 



5. C. eampestris, Torr. & Gray. Boot tuberous: plant about 2 inches 

 high: leaves 3-parted, the divisions remote, bipinnafifd: involucels minute : fridt 

 with somewhat thickened and spongy icings, the alternate ones obsolete ; oil- 

 tubes 6 on the cominissure. — Loc. cit. "Plains of the Platte near the Kocky 

 Mountains" {Nuilall). 



■*- +- Peduncles equalling the leaves or longer. 



6. C. (?) anisatus, Gray. Acaulescent, cespitose from a much-branched 

 caudex, glabrous: leaves narrow, on long petioles, somewhat rigid, pinnate; 

 leaflets 6 to 10 pairs, pinnately parted; segments entire or laciniately lobed, 

 linear, pungently acute: involucre usually none; involucels of 6 to 8 linear 

 leaflets : fruit irregularly winged ; calyx-teeth conspicuous ; oil-tul)€s one in 

 each narrow interval, 2 to 4 on the commissure. — Proc. Acad. Philad. 1863, 

 p. 63. Colorado, Nevada, and the Wasatch. 



7. C. bipinnatus, Watson. Cespito.'je, the short branches of tlie root- 

 stock covered with the crowded remains of dead leaves, glaucous, rough-puberu- 

 lent : leaves pinnate; leaflets 4 or 5 pairs, subcqual. 3 to 5 lines long or less, 

 pinnately divided; segments linear, entire or cleft into short linear lobes: 

 scape 4 to 6 inches high, much e.rceeding the leaves: involucels of .several linear- 

 lanceolate leaflets : fruit nearly sessile, U or 2 lines long; wings thin, but some- 

 what corky, na,vTOW ; oil-tubes 3 or 4 in the rather broad intervals. — Proc. Am. 

 Acad. XX. 368. C.fxniculaceus of Hayd. Kep. 1871. Resembling C. alpinus. 

 Mountains of Montana, Hayden, Watson, Canby. 



L^rr\ Cut \ a Yi\ 



16. iP- E U O E D Ay U^Mr-^>. 



Calyx-teeth obsolete or sljglitly pniminont. Disk and stylopodium small 

 and de]iressed. — Perennials, with fusiform or tuberous roots, caulescent «>r 

 acaulescent: umbels mostly involucellate : leaves pinnate to dccompnundljf 

 dissected. — Watson, Proc. Am. Acad. xi. 121. 



