250 UMBELLIFERAE 



6. Lomatium rigidum (M. E. Jones) Jepson. Inyo Lomatium. Fig. 3546. 



Cogswellia rigida M. E. Jones, Contr. West. Bot. No. 13: U. 1910. 

 Lomatium rigidum Jepson, Fl. Calif. 2: 637. 1936. 



Plants acaulescent or short-caulescent, 2.5-4 dm. tall, glabrous, from a cluster of dried 

 leaf-sheaths. Leaves bipinnate; leaf-divisions ovate to cuneate, sharply pinnatifid, 10-20 mm. 

 long, the lobes with acerose or spinulose teeth; rays 10-20, spreading, subequal, 2.5-5 cm. long; 

 bractlets lanceolate, acuminate; pedicels 5-10 mm. long; flowers yellow; sepals conspicuous; 

 fruit ovate to oblong, 7-9 mm. long, emarginate at base, rounded at apex ; wings less than half 

 the width of the body ; oil-tubes 3 in the intervals, about 6 on the commissure. 



Rocky places, mainly Arid Transition Zone; eastern slopes of the Sierra Nevada, Inyo County, California. 

 Type locality: Big Pine, Inyo County. May-July. 



7. Lomatium Gormanii (Howell) Coult. & Rose. Gorman's Lomatium. 



Fig. 3547. 



Peucedanum Gormanii Howell, Fl. N.W. Amer. 1: 252. (April 1) 1898. 

 Peucedanum confusum Piper, Erythea 6:29. (April 10) 1898. 

 Lomatium Gormanii Coult. & Rose, Contr. U.S. Nat. Herb. 7:208. 1900. 



Plants acaulescent, 1-1.5 dm. tall, from a shallow globose tuber up to 2.5 cm. in diameter, 

 covered with fascicles of rootlets. Leaves ternate, then 1-2-pinnate; leaf-divisions oblong to 

 linear, 2-13 mm. long, glabrous or sparingly puberulent; rays 4-10, unequal, 0.6-3 cm. long; 

 bractlets absent or few, setaceous, scarious-margined; pedicels 0.5-3 mm. long; flowers white 

 or purplish, anthers purple; fruit ovate, 5-7 mm. long, puberulent; wings about half the width 

 of the body ; oil-tubes 3-4 in the intervals, 4-6 on the commissure. 



Stony ground, Arid Transition and Upper Sonoran Zones; central and southeastern Washington, central 

 Oregon, and Idaho. Type locality: "high hills opposite the Dalles," probably Klickitat County, Washington. 

 April-June. 



8. Lomatium Piperi Coult. & Rose. Piper's Lomatium. Fig. 3548. 



Lomatium Piperi Coult. & Rose, Contr. U.S. Nat. Herb. 7: 211. 1900. 



Plants acaulescent or short-caulescent, 1-2.5 dm. tall, glabrous or with somewhat puberulent 

 foliage, from a small globose, sometimes deep-seated tuber. Leaves ternate, then tripinnate ; 

 leaf-divisions linear, 3-30 mm. long ; rays 3-20, unequal, spreading, 1-6 cm. long ; bractlets 

 absent or few, linear; pedicels obsolete or less than 2 mm. long; flowers white, the anthers 

 purple; fruit ovate to oblong, 5-9 mm. long, glabrous; wings about half as broad as the body; 

 oil-tubes 1-8 in the intervals, 2-4 on the commissure. 



Dry stony ground. Arid Transition Zone; central Washington to northern California, east to western 

 Idaho. Type locality: EUensburg, Washington. April-June. 



9. Lomatium orogenioides (Coult. & Rose) Mathias. Leiberg's Lomatium. 



Fig. 3549. 



Leibcrgia orogenioides Coult. & Rose, Contr. U.S. Nat. Herb. 3: 575. 1896. 

 Lomatium orogenioides Mathias, Ann. Mo. Bot. Gard. 25: 242. 1937. 



Plants acaulescent, slender, 1-4 dm. tall, from a globose tuber 6-12 mm. in diameter. Leaves 

 2-3-ternate, glabrous; leaf-divisions filiform, 10-45 mm. long; rays 3-10, glabrous or sparsely 

 scaberulous, ascending, unequal, 3-15 cm. long; bractlets linear; pedicels 1-3 mm. long; flowers 

 white; fruit linear, 8-10 mm. long, constricted toward the apex, glabrous; wings narrow to 

 almost obsolete ; oil-tubes solitary in the intervals, 2 on the commissure. 



Darnp ground along streams, Arid Transition and Canadian Zones; northeastern Washington to northern 

 Idaho. Type locality: Santianne Creek bottoms, Coeur d'Alene Mountains, Idaho. May-July. 



10. Lomatium farinosum (Geyer) Coult. & Rose. Coeur d'Alene Lomatium. 



Fig. 3550. 



Peucedanum farinosum Geyer in Hook. Lond. Journ. Bot. 6: 235. 1847. 

 Lomatium farinosum Coult. & Rose, Contr. U.S. Nat. Herb. 7:210. 1900. 



Plants short-caulescent, 1.5-3 dm. tall, glabrous, from a globose tuber 1-2 cm. in diameter. 

 Leaves biternate; leaf-divisions linear, 1.5-8 cm. long; rays 3-12, ascending,^ weak, unequal, 

 1-7 cm. long; bractlets 1 to few, linear, acuminate, sometimes scarious, deciduous; pedicels 

 6-17 mm. long; flowers white; fruit linear-oblong, 5-6 mm. long; wings about half the width 

 of the body ; oil-tubes several in the intervals. 



Heavy soil, among basaltic rocks. Arid Transition Zone; eastern Washington and adjacent Idaho. Type 

 locality: Coeur d'Alene Mountains, Idaho. April-June. 



11. Lomatium Hambleniae Math. & Const. Hamblen's Lomatium. Fig. 3551. 



Lomatium Hambleniae Math. & Const. Bull. Torrey Club 69: 153. 1942. 



Plants acaulescent or short-caulescent, 1-3.5 dm. tall, glabrous, from a globose tuber about 

 1.5 cm. in diameter. Leaves 1-2-ternate, then pinnate or pinnately lobed ; leaf-divisions linear, 

 remote, 5-23 mm. long; rays 2-8, unequal, 4-8 cm. long; bractlets few, linear or lanceolate; 



