UMBELLIFER^E. (PARSLEY FAMILY.) 119 



less, linear-oblong, entire, or 1 to 2-toothed : involucre a single 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. 624. C. famiculaceus, 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 fleshy : stem 2 to 6 inches 

 high: leaves glaucous, ovate in outline, bipinnately divided; segments rather 

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

 5-parted : flowers polygamous: fruit ivith membranous icings ; oil-tubes 4 on the 

 commissure. — Loc. cit. Colorado, northward and westward. 



4. C. glomeratus, Raf. Root thick and fusiform: stem 3 to 8 inches 

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

 petioles, ternately divided and bipinnatifld : leaflets of 'the palm ately 5 to 1-parted 

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

 with thickened and somewhat spongy wings ; 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. campestris, Torr. & Gray. Root tuberous: plant about 2 inches 

 high: leaves 3-parted, the divisions remote, bipinnatifld : involucels minute : fruit 

 ivith somewhat thickened and spongy wings, the alternate ones obsolete ; oil- 

 tubes 6 on the commissure. — Loc. cit. "Plains of the Platte near the Rocky 

 Mountains" (Xuttall). 



-»- +- Peduncles equalling the leaves or longer. 



6. C. (1) anisatus, Gray. Acaulescent, cespitose from a much-branched 

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

 leaflets 6 to 10 pairs, pinuately 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-tubes 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. Cespitose, the short branches of the root- 

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

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

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

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

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

 what corky, narrow; oil-tubes 3 or 4 in the rather broad inten-als. — Proc. Am. 

 Acad. xx. 368. C. fceniculaceus of Havel . Rep. 1871. Resembling C. alpinus. 

 Mountains of Montana, Hayden, Watson, Cdnby. 



16. PEUCEDANUM, L. 



Calyx-teeth obsolete or slightly prominent. Disk and stylopodium small 

 and depressed. — Perennials, with fusiform or tuberous roots, caulescent or 

 acaulescent : umbels mostly involucellate : leaves pinnate to decompoundlj 

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



