642 UMBELLIFERAE 



the sepiients cro\vded, obovate or obloufj, \r, to y^ (or ll^) lines lonpr; flowers 

 blaek-purple; umbel somewhat unequally 6 to 12 (or more)-rayed; involucels in- 

 conspicuous, consistintr of small linear-lanceolate acuminate bractlets; umbellets 

 very numerous; fruit broadly elliptic to almost orbicular, 3 to 41/2 lines \on^, the 

 wingrs not as broad as the body; oil-tubes usually 3 or 4 (sometimes 2 or 5) in the 

 intervals with 4 to 8 on the commissure. 



Dry plains and hill slopes, 2100 to 6000 (or 11,000) feet: Colorado Desert 

 (west side) ; Mohave Desert and its bordering ranges; north to Inyo Co. Apr.- 

 May, fr. May- Aug. 



Locs. — Blair Valley, e. San Diego Co., Jepson 8673 ; betw. Thomas Valley and Vandeventer 

 ranch, San Jacinto Mts., Jepson 1332 ; Antelope Valley, Davidson; Manzana, Davy 2623 ; Amargo, 

 Jepson 15,580; Stoddard Well, Jepson 5923; Ord Mt., Jepson 5868; Kramer, Jepson 5346; Mt. 

 Pinos, Hall 6516 ; Walker Pass, Purpus 5352 ; Campito Mt., White Mts., Jepson 7281. 



Eofs. — LoMATiUM MOHAVENSE C. & R. Contrib. U. S. Nat. Herb. 7:234 (1900) ; Jepson, Man. 

 722, fig. 707 (1925). Feucedanum mohavense C. & R. Rev. N. A. Umbell. 62 (1888), type loc. 

 Yucca, Mohave Desert, Curran. CogswcUia mohavensis Jones, Contrib. W. Bot. 12:34 (1908). 

 Peucedanum argense Jones, I.e. 8:30 (1898) ; type loc. Lone Pine, Invo Co., Jones. Lomatium 

 argense C. & R. Contrib. U. S. Nat. Herb. 7 :234 (1900). 



12. L. ciliolatum Jepson. Peduncles and leaves from the crown of the tap- 

 root; peduncles spreading, 1^2 to 4 inches long; whole plant glabrous except the 

 margins of the leaves which are finely and regularly ciliolate; leaves ovatish in 

 outline, % to 1^^ inches long, simply pinnate, the leaflets 14 to % inch long, irregu- 

 larly pinnatifid into ovatish segments; rays 3 to 5, unequal, 1/4 to 1^/4 inches long; 

 pedicels I/2 to 1 line long; involucre none; involucels of several ovate bractlets 

 with dark purple veins; fruit elliptic, glabrous, 3^/^ to 4 lines long; lateral ribs 

 with narrow wings (about i/i line wide) ; dorsal and intermediate ribs filiform, 

 inconspicuous, the dorsal and lateral intervals with 3 or 4 striae ; oil-tubes obscure, 

 4 or 5 in the intervals, 2 on the commissure. 



Montane slopes, 6000 to 7000 feet : Yollo Bolly Mts. Fr. July. 

 Refs. — Lomatium cHjIOLATum Jepson, Madrono 1:155 (1924), type loc. Soldier Ridge near 

 South YoUo Bolly, Jepson 14,319; Man. 723 (1925). 



13. L. nevadense C. & R. Basin Parsnip. Plants 4 to 7 inches high, the 

 peduncles ascending from very short erect stems rising from the root-crown; 

 herbage, rays and pedicels minutely pubescent; leaves decompound, the ultimate 

 divisions pinnately divided into acute segments 1 to 2 lines long; umbels compact 

 or subcapitate in flower, unequally 3 to 5-rayed, the rays elongating in fruit and 

 becoming i/^ to 4 inches long; bractlets ovate to linear-lanceolate, scarious-mar- 

 gined, distinct or united at base; pedicels 1% to 4 lines long; flowers white with 

 pubescent ovaries; fruit ovate, acute, minutely pubescent, 3 to 5 lines long, the 

 wings narrower than or almost as broad as the body; ribs on the back very fine or 

 somewhat obscure, sometimes with supplementary striae in the intervals; oil-tubes 

 3 or 4 in the intervals, 4 to 6 on the commissure. 



Sandy or rocky exposed slopes, 4000 to 9600 feet : east side or easterly crests 

 of the Sierra Nevada from Tuolumne Co. to Modoc Co. North to Oregon, east to 

 Utah and Arizona. May-June, fr. Aug. 



Locs. — Sonora Pass, A. L. Grant 356; Prosser Creek, Nevada Co., Sonne; Martis Creek, 

 Truckee, Sonne ; Forestdale region, sw. Modoc Co., M. S. BaJcer; Goose Lake Valley, E. M. Austin. 



Var. parishli Jepson. Ultimate leaf -segments 2 to 4 lines long, or often elongated-linear and 

 up to 12 lines long ; involucel unilateral, deeply toothed ; pedicels Ys to 3 lines long ; ovaries and 

 fruit glabrous; fruit round-ovate to narrowly or broadly elliptic, 3'/^ to 5 lines long; wings usually 

 narrower than the body ; ribs filiform, often with 3 or 4 supplementary striae of the same size in 

 the intervals; oil-tubes exceedingly small, several in the intervals. — Dry rocky soU, 5000 to 8600 

 feet : desert ranges in Inyo Co. and in and bordering the western Mohave Desert. 



Locs. — Templeton Mt., Tulare Co., Jepson 4973 (on about 100 acres of the flats near the moun- 

 tain it is the dominant species) ; Lone Pine, Hall 4" Chandler 7205 ; Piute Peak, Kern Co., Purpus 

 5288; Nelson Range, Inyo Co., Kail 4" Chandler 7155; Hanaupah Canon, Panamint Range, Jepson 



