260 UMBELLIFERAE 



3_4-pinnate; leaf-divisions crowded, linear, 2-5 mm. long; rays 10-16, subequal, 1-4.5 cm. long; 

 bractlets linear, acute, sometimes inconspicuously scarious-margined ; pedicels 1-10 mp. long; 

 flowers purple, rarely yellow; fruit ovate to orbicular, 4.5-9 mm. long, pubescent; wings nar- 

 rower than or equaling the body ; oil-tubes 1-4 in the intervals, 4-6 on the commissure. 



Dry gravelly slopes, Upper and Lower Sonoran Zones; deserts, southern California and adjacent Nevada, 

 especially in the Mojave Desert. Type locality: "Yucca, Mojave Desert, California." April-May. 



37. Lomatium tomentosum (Benth.) Coult. & Rose. Woolly Lomatium. 



Fig. 3577. 



Peucedanum tomentosum Benth. PI. Hartw. 312. 1849. 



Lomatium tomentosum Coult. & Rose, Contr. U.S. Nat. Herb. 7: 219. 1900. 



Plants short-caulescent, villous-tomentose throughout, 2.5-5 dm. tall, from a long slender 

 taproot. Leaves pinnately decompound or ternate, then quadripinnate ; leaf-divisions crowded, 

 filiform, 2-6 mm. long; rays 12-21, spreading, subequal, 2.5-8.5 cm. long; bractlets lanceolate 

 to ovate-lanceolate, distinct or connate below, acute to acuminate, entire or cleft above; pedi- 

 cels 5-20 mm. long, shorter than the mature fruit; flowers greenish white or purplish; fruit 

 ovate-oblong, 16-22 mm. long, tomentulose; wings about equaling the body, tomentulose; oil- 

 tubes 1-3 in the intervals, 3 on the commissure. 



Rocky soil. Upper Sonoran Zone; Great Valley, Sierra Nevada foothills, and Tehachapi Mountains, 

 California. Type locality: Sacramento Valley, probably in Butte County, California. March-June. 



38. Lomatium macrocarpum (Hook. & Arn.) Coult. & Rose, Large-fruited 



Lomatium. Fig. 3578. 



Ferula macrocarpa Hook. & Arn. Bet. Beechey 348. 1838. 



Peucedantim macrocarpum y2s. f eurycarpum A. Gray, Proc. Amer. Acad. 8: 385. 1872. 



Lomatium macrocarpum Coult. & Rose, Contr. U.S. Nat Herb. 7: 217. 1900. 



Lomatium macrocarpum var. semivittatum Piper, Bull. Torrey Club 29:224. 1902. 



Lomatium macrocarpum var. artemisiarum Piper, op. cit. 223. 



Lomatium fiavum Suksd. Allg. Bot. Zeit. 12: 6. 1906. 



Cogswellia simulans Coult. & Rose, Contr. U.S. Nat. Herb. 12: 451. 1909. 



Lomatium macrocarpum var. Douglasii Jepson, Madrono 1: 153. 1924. 



Plants short-caulescent, 1-5 dm. tall, densely tomentose to villous or glabrate, purplish espe- 

 cially below, from a slender or somewhat swollen taproot. Leaves ternate, then 2-3-pinnate; 

 leaf-divisions confluent, oblong to linear, 1-7 mm. long; rays 5-25, spreading, 1-8.5 cm. long; 

 bractlets dimidiate, linear-lanceolate, acute, becoming reflexed in the mature plant; pedicels 

 1-14 mm. long, spreading ; flowers white, yellow or purplish ; fruit narrowly oblong, 9-20 mm. 

 long, 2-8 mm. broad ; ovaries and young fruit glabrous to villous, the mature fruit glabrous or 

 glabrate ; wings narrower than the body ; oil-tubes 1-3 in the intervals, 2-6 on the commissure. 



Dry hills and plains, Upper Sonoran and Arid Transition Zones; British Columbia south to Kern and 

 Monterey Counties, California, east to Manitoba and North Dakota. Type locality: California. April-June. 



Lomatium macrocarpum var. ellipticum fTorr. & Gray) Jepson, Madrofio 1: 153. 1924. (Peucedanum 

 nudicale var. ellipticum Torr. & Gray, Pacif. R. Rep. 2': 121. 1885.) Pedicels often longer, up to 16 mm. 

 long- fruit oblongoval, 16-18 mm. long, 6-10 mm. broad, glabrous; wings twice as broad as the body. North- 

 ern Sierra Nevada foothills, California. Type locality: near the sources of the Sacramento m the Sierra 

 Nevada. 



39. Lomatium Congdonii Coult. & Rose. Congdon's Lomatium. Fig. 3579. 



Lomatium Congdonii Coult. & Rose. Contr. U.S. Nat. Herb. 7:232. 1900. 



Plants acaulescent or short-caulescent, 1.8-3.6 dm. tall, from a cluster of old leaf-sheaths, 

 from a long taproot. Leaves ternate to quinate, then 2-3-pinnate, the rachises scaberulous ; leaf- 

 divisions distinct, linear, 3-10 mm. long; petiole wholly sheathing, white-scanous ; rays 6-16, 

 ascending, 3-13.5 cm. long; bractlets absent; pedicels 6-15 mm. long; flowers yellow; fruit 

 oblong to subobovate, 7-10 mm. long ; wings about half the width of the body ; oil-tubes obscure, 

 usually solitary in the intervals, 2-4 on the commissure. 



Rocky soils, Upper Sonoran Zone; foothills of the central Sierra Nevada, California. Type locality: 

 West Water Ditch, Mariposa County, California. May. 



40. Lomatium Torreyi Coult. & Rose. Torrey's Lomatium. Fig. 3580. 



Peucedanum Torreyi Coult. & Rose, Bot. Gaz. 14: 276. 1889. 

 Lomatium Torreyi Coult. & Rose. Contr. U.S. Nat. Herb. 7: 229. 1900. 



Plants acaulescent or caulescent, 1-2.5 dm. tall, glabrous to sparingly scaberulous, from a 

 cluster of dried leaf-sheaths. Leaves ternate, then tripinnate; leaf-divisions filiform, 3-8 mm. 

 long ; petioles wholly sheathing, with a white scarious margin ; rays 5-9, unequal, erect, 1-4 cm. 

 long ; bractlets absent ; pedicels 1^ mm. long ; flowers yellow ; fruit narrowly oblong, 10-16 

 mm. long, narrowed toward the base; wings less than half the width of the body; oil-tubes 

 solitary in the intervals. 



Clefts of granite rocks. Boreal Zones; southern Sierra Nevada, California. Type locality: "Yosemite 

 Valley," California. May-Aug. 



