CARROT FAMILY 263 



to oblong, 7-16 mm. long, glabrous; wings thin, narrower than to equaling the body; oil-tubes 

 solitary, rarely 2-3, in the intervals, 2-6 on the commissure. 



Dry rockv slopes, Upper Sonoran and Arid Transition Zones; eastern Washington and Oregon to western 

 Wyoming and' Colorado. Type locality: Antelope Island, Salt Lake, Utah. April-May. 



46. Lomatium salmoniflorum (Coult. & Rose.) Math. &: Cotist. 

 Salmon-flowered Lomatium. Fig. 3586. 



Leptotaenia salmoniflora Coult. & Rose, Contr. U.S. Nat. Herb. 7:201. 1900. 

 Lomatium salmoniflorum Math. & Const. Bull. Torrey Club 69: 246. 1942. 



Plants caulescent, glabrous, 2-5 dm. tall, from a stout thickened root. Leaves ternate, then 

 2-4-pinnate; leaf-divisions filiform to linear, 1-7 mm. long; rays 4-13, spreading, 1-6 cm. long; 

 bractlets absent or few, filiform; pedicels 2-14 mm. long; flowers salmon-yellow; fruit oblong- 

 oval, 10-14 mm. long, glabrous; wings much narrower than and the same color as the body, 

 slightly corky-thickened ; oil-tubes solitary in the intervals, 2 on the commissure. 



Basaltic slopes. Upper Sonoran Zone;. Snake River drainage Washington and Oregon to Idaho^ Type 

 locality: "near upper ferry. Clearwater River above Lewiston, Nez Perce County, Idaho. May-July. 



47 Lomatium minus (Rose) Math. & Const. John Day Valley Lomatium. 



Fig. 3587. 



Leptotaenia minor Rose ex Howell, Fl. N.W. Anier. 1:251. 1898. 

 Lomatium minus Math. & Const. Bull. Torrey Club 69: 246. 1942. 



Plants short-caulescent, 1.5-3 dm. high, glabrous, from stout thickened roots bearing a 

 caudex clothed with a few scarious, dilated, bladeless sheaths. Leaves ternate, then 2-4-pin- 

 nate- leaf-divisions linear to filiform, 1-3 mm. long; peduncles stout and inflated; rays 6-9, 

 stout, spreading, subequal, 2-6 cm. long; bractlets linear, scarious; flowers light purple; fruit 

 oblong-oval 12-16 mm. long, glabrous ; wings narrower than and the same color as_ the body, 

 slightly corky-thickened; oil-tubes large, solitary in the intervals, 3^ on the commissure. 



Rocky soil, Arid Transition Zone; central to southeastern Oregon. Type locality: Rock Creek, Morrow 

 County, Oregon. May-June. 



48. Lomatium cuspidatum Math. & Const. Wenatchee Lomatium. Fig. 3588. 



Leptotaenia IVatsonii Coult. & Rose, Rev. N. Amer. Umbell. 52. 1888. Not Peucedanum Watsonii Coult. & 



Rose. 1888. 

 Lomatium cuspidatum Math. & Const. Bull. Torrey Club. 69: 246. 1942. 



Plants acaulescent or short-caulescent, glabrous, 2-6 dm. tall, from a stout, thickened root 

 bearing a caudex clothed with dilated, bladeless sheaths. Leaves ternate, then 2-3-pinnate; 

 leaf-divisions ovate to lanceolate, rigid, cuspidate, 1-5 mm. long; rays 5-12, 3-10 cm long, 

 unequal- bractlets linear-lanceolate to filiform, scarious; pedicels 8-28 mm. long; flowers 

 purple anthers purple ; fruit narrowly oblong-oval, 9-13 mm. long ; wings much narrower than 

 and colored like the body, slightly corky-thickened ; oil-tubes usually 3 in the intervals, several 

 on the commissure. 



Basaltic slopes, Arid Transition Zone; Wenatchee region of central Washington. Type locality: 

 Wenatchee Region, Kittitas County, Washington. May-July. 



Lomatium tuberosum Hoover, Leaflets West. Bot. 4: 39. 1944. Reported to differ frorn L. cuspidatum 

 in its tuberous base, its linear and herbaceous leaf-divisions, and yellow anthers. Known only from Yakima 

 County, Washington. 



49 Lomatium serpentinum (M. E. Jones) Mathias. Snake Canyon Lomatium. 



Fig. 3589. 



Cogsivellia serpentina M. E. Jones, Contr. West. Bot. No. 12:42. 1908. 



Cogswellia fragrans St. John, Fl. S. E. Wash. 290. 1937. 



Lomatium serpentinum Mathias, Ann. Mo. Bot. Gard. 25: 271. 1937. 



Plants acaulescent, 2.5-3 dm. tall, essentially glabrous, root thick and woody with a multi- 

 cipital caudex. Leaves 1-2-ternate, then bipinnate ; leaf-divisions crowded, lanceolate to ob- 

 lanceolate, 2-5 mm. long, minutely papillose above; rays 10-17, spreading to ascending, unequal, 

 1.5-7 cm. long; bractlets linear-lanceolate, finely puberulent ; pedicels 3-15 mm. long; flowers 

 bright yeilow ; fruit oblong, 6-10 mm. long, glabrous ; wings half as broad as to equaling the 

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



Basaltic slopes. Upper Sonoran Zone; Snake River Canyon, Washington, Oregon and Idaho. Type 

 locality: rocky banks of the Snake River near the mouth of McDougal Creek, Oregon. April-June. 



50. Lomatium Donnellii Coult. & Rose. Donnell's Lomatium. Fig. 3590. 



Peucedanum Donnellii Coult. & Rose, Bot. Gaz. 13: 143. 1888. 

 Lomatium Donnellii Coult. & Rose, Contr. U.S. Nat. Herb. 7: 231. 1900. 



Plants acaulescent or caulescent with the development of a pseudoscape, 1.3-3.3 dni. tall, 

 glabrous, from a long, somewhat stout taproot. Leaves ternate, then 2-3-pinnate; leaf-divisions 

 confluent, linear, 1-7 mm. long, acute ; rays 8-30, spreading to suberect, unequal, 1-9 cm. long ; 

 bractlets filiform to linear-lanceolate; pedicels 3-15 mm. long; flowers yellow; fruit ovate to 



