252 UMBELLIFERAE 



pedicels 15-25 mm. long; flowers yellow; fruit oblong-ovate, 5-8 mm. long; wings much nar- 

 rower than the body. 



"Scablands of central Washington; Arid Transition Zone. Type locality: Dry Falls, Grand Coulee, Wash- 

 ington. April-May. 



12. Lomatium Geyeri (S. Wats.) Coult. & Rose. Geyer's Lomatium. Fig. 3552. 



Feucedanum Geyeri S. Wats. Bibl. Ind. 428. 1878. 



Orogenia fusiformis var. Leibergii Coult. & Rose, Rev. N. Amer. Umbell. 92. 1888. 



feucedanum evittatum Coult. & Rose, Bot. Gaz. 14: 277. 1889. 



Lomatium Geyeri Coult. & Rose, Contr. U.S. Nat. Herb. 7:209. 1900. 



Plants acaulescent, 2-4.5 dm. tall, glabrous, from a shallow or deep-seated small tuber 

 less than 1 cm. in diameter. Leaves ternate, then pinnate ; leaf-divisions few, remote, linear, 

 10-50 mm. long; rays 5-20, spreading to ascending, unequal, 1-6 cm. long; bractlets connate, 

 linear-lanceolate, acuminate, scarious-margined ; pedicels 2-5 mm. long; flowers white, anthers 

 purple; fruit ovate-oblong, 6-13 mm. long; wings narrower than the body; oil-tubes small, 

 obscure, 2-6 in the intervals, about 6 on the commissure. 



Open woods and plains, Upper Sonoran and Arid Transition Zones; eastern British Columbia to central 

 Washington. Type locality: "sandy woods and plains. Upper Columbia River." May-June. 



13. Lomatium Hendersonii Coult. & Rose. Henderson's Lomatium. Fig. 3553. 



Feucedanum Hendersonii Coult. & Rose, Bot. Gaz. 13:210. 1888. 

 Lomatium hendersonii Coult. & Rose, Contr. U.S. Nat Herb. 7: 209. 1900. 

 Leptotaenia Leibergii Coult. & Rose, op. cit. 202. 



Plants short-caulescent, 8-25 cm. tall, glabrous, from a large shallow constricted tuber. 

 Leaves ternate, then pinnate or bipinnate; leaf-divisions linear, 4-10 mm. long; rays 5-6, un- 

 equal, 0.5-3 cm. long; bractlets lanceolate; pedicels 2-7 mm. long; flowers "deep yellow" (ap- 

 pearing white in dried specimens) ; fruit oblong-oval, 4-8 mm. long, glabrous ; wings much nar- 

 rower than and the same color as tlie body; oil-tubes minute, solitary in the intervals, 2 on the 

 commissure. 



Stony hilltops, Arid Transition Zone; central to southeastern Oregon. Type locality: "on high hilltops, 

 John Day Valley, Oregon." May-June. 



14. Lomatium Canbyi Coult. & Rose. Canby's Lomatium. Fig. 3554, 



Feucedanum Canbyi Coult. & Rose, Bot. Gaz. 13: 78. 1888. 

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



Plants acaulescent, 1 . 5-2 dm. tall, glabrous, from a thick, more or less elongated rootstock 

 ending in a globose tuber 1-2.5 cm. in diameter. Leaves ternate, then bipinnate; leaf-divisions 

 linear, obtuse, 4-5 mm. long; rays 12-17, spreading, subequal, 2.7-5.5 cm. long; bractlets 

 linear, acute to subacuminate ; pedicels 8-12 mm. long ; flowers white ; fruit oblong to oval, 

 7-10 mm. long; wings narrower than the body; oil-tubes 1-2 in the intervals, 2-4 on the com- 

 missure. 



Stony ridges. Arid Transition and Upper Sonoran Zones; eastern Washington and Oregon to northeast- 

 ern California, and western Idaho. Type locality: "high ridges, Eastern Oregon." May-June. 



15. Lomatium Watsonii Coult. & Rose. Watson's Lomatium. Fig. 3555. 



Feucedanum IVatsonii Coult. & Rose, Bot. Gaz. 13:209. 1888. 

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



Plants acaulescent, puberulent, 0.8-1.5 dm. tall, from a deep-seated solitary oblong tuber 

 with clusters of rootlets on its surface. Leaves 2-4-pinnate; leaf-divisions crowded, linear, 1-5 

 mm. long; rays 1-9, ascending, unequal, 0.5-2.5 cm. long; bractlets scarious, dimidiate, connate 

 to near the apex; pedicels obsolete to 1 mm. long; flowers yellow; fruit ovate, 6-7 rnm. long, 

 puberulent ; wings less than half the width of the body ; oil-tubes obscure, several in the intervals, 

 about 6 on the commissure. 



Dry hills. Arid Transition Zone; central Washington and the Blue Mountains, Oregon. Type locality: 

 •on denuded hilltops near "Alkali," Oregon. April-June. 



16. Lomatium leptocarpum (Torr. & Gray) Coult. & Rose. Slender-fruited 



Lomatium. Fig. 3556. 



Feucedanttm triternatum var. leptocarpum Torr. & Gray, Fl. N. Amer. 1: 626. 1840. 

 Feucedanum bicolor S. Wats. Bot. King Expl. 129. 1871. 

 Lomatium leptocarpum Coult. & Rose, Contr. U.S. Nat. Herb. 7: 213. 1900. 

 Feucedanum bicolor var. gumbonis M. E. Jones, Contr. West. Bot. No. 10: 55. 1902. 



Plants short-caulescent, 1.5-5.5 dm. tall, glabrous to scaberulous, from elongated monili- 

 form tuberous roots. Leaves 1-2-ternate, then 2-4-pinnate; leaf-divisions filiform to linear, 

 0.5-45 mm. long; rays 4-15, suberect, strict, unequal, 2-12 cm. long; bractlets linear, acute; 

 pedicels 2-7 mm. long; flowers yellow; fruit narrowly oblong, 10-15 mm. long, glabrous ; wings 

 less than half the width of the body ; oil-tubes solitary in the intervals, 2-4 on the commissure. 



Dry rocky ground. Upper Sonoran and Arid Transition Zones; Blue Mountains, eastern Oregon, to north- 

 eastern California, eastward to Colorado and northern Arizona. Type locality: "plains of the Oie?on near 

 the confluence of the Wahlamet," but probably from somewhere east of the Cascades, Oregon. April-June. 



