266 UMBELLIFERAE 



mm. long; wings about equaling the body; oil-tubes solitary in the intervals, 2 on the com- 

 missure. 



Gravelly slopes. Boreal Zones; Cascade Mountains and Coast Ranges of southern Oregon. Type locality: 

 "rocky places, Cascade Mountains, Oregon." May-Aug. 



56. Lomatium simplex (Nutt.) J. F. Macbride. Great Basin Lomatium. 



Fig. 3596. 



Peucedanum triternatum var. f platycarpum Torr. Stansbury Exp. 389. 1852. 

 Peucedanum simplex Nutt. in S. Wats. Bot. King Expl. 129. 1871. 

 Lomatium simplex J. F. Macbride, Contr. Gray Herb. No. 56: 34. 1918. 



Plants caulescent or acaulescent, 2-6 dm. tall, clustered from a long slender taproot. Stems 

 mostly simple, few-leaved, densely puberulent; leaves biternate; leaf-divisions linear, 2.5-11.5 

 cm. long, acute, glabrous above, glabrous to densely puberulent below; rays 8-17, spreading 

 to ascending, unequal, 1.5-5.8 cm. long; bractlets linear or filiform, acute to acuminate, gla- 

 brous or puberulent; pedicels 1-9 mm. long; flowers yellow; fruit broadly oblong to suborbicular, 

 7-14 mm. long, glabrous ; wings broader than the body ; oil-tubes solitary in the intervals, 2 on 

 the commissure. 



Rocky hillsides or flats. Arid Transition and Boreal Zones; central Washington and Oregon to western 

 Montana, southwestern Colorado and Utah. Type locality; "Rocky Mts." Collected by Nuttall. May-July. 



Lomatium simplex var. leptoph^llum (Hook.) Mathias, Ann. Mo. Bot. Gard. 25:283. 1937. 

 (Peucedanum triternatum var. leptophyllum Hook. Lond. Journ. Bot. 6: 235. Ovaries and young fruit puberulent. 

 British Columbia, eastern Washington and Oregon, to Alberta, Montana and Wyoming. Type locality: "on the 

 slopes of the high plains of Kooskooskee [Clearwater] River," Idaho. 



57. Lomatium triternatum (Pursh) Coult. & Rose. Lewis' Lomatium. 



Fig. 3597. 



Seseli triternatum Pursh, Fl. Amer. Sept. 197. 1814. 



Peucedanum Nuttallii Walp. Rep. 2: 411. 1843. Not Seseli Nuttallii A. Gray, 1870. 



Lomatium triternatum Coult. & Rose, Contr. U.S. Nat. Herb. 7:227. 1900. 



Plants caulescent or acaulescent, 1.7-8 dm. tall, puberulent to glabrate, from a long slender 

 taproot. Leaves ternate or quinate, then pinnate to bipinnate; leaf-divisions few, linear, 1.5- 

 12.6 cm. long, entire; rays 10-20, spreading to suberect, unequal, 1.2-5.5 cm. long; bractlets 

 filiform ; pedicels 3-5 mm. long ; flowers yellow ; ovaries glabrous ; fruit oblong, 9-13 mm. 

 long, glabrous ; wings narrower than the body ; oil-tubes solitary in the intervals, 2 on the 

 commissure. 



Stony ground. Transition and Upper Sonoran Zones; western Washington to northern California, east 

 to Alberta and Wyoming. Type locality: "on the waters of the Columbia River," probably on the Clearwater 

 River, Idaho. April-Aug. 



Lomatium triternatum var. anomalum (M. E. Jones) Mathias, Ann. Mo. Bot. Gard. 25: 285. 1937. 

 (Lomatium anomalum M. E. Jones ex. Coult. & Rose, Contr. U.S. Nat. Herb. 7:237. 1900.) Plants 

 caulescent; leaf-divisions ovate-lanceolate to narrowly obovate, 15-65 mm. long, entire or the uppermost 

 rarely 3-toothed to deeply lobed; rays 10-22, puberulent to glabrate, 1.5-8 cm. long; pedicels 2-8 mm. long; 

 fruit 13-22 mm. long, glabrous (ovaries and young fruit glabrous). Western Idaho to Oregon and north- 

 western California. Type locality; Indian Valley, Washington County, Idaho. Here may belong Lomatium 

 giganteum Coult. & Rose (Contr. U.S. Nat. Herb. 7: 240. 1900.) and Lomatiunv nudicaule var. puberulum Jcpson 

 (Madrofio 1: 159. 1924.). 



Lomatium triternatum var. macrocarpum (Coult. & Rose) Mathias, op. cit. 286. (Peucedanum tri- 

 ternatum var. macrocarpum Coult. & Rose, Rev. N. Amer. Umbell. 70. 1888; Lomatium robustius Coult. 

 & Rose, Contr. U.S. Nat. Herb. 7: 228. 1900; Peucedanum triternatum var. alatttm Coult. & Rose, lock cit.) 

 Leaves ternate or quinate, then biternate to bipinnate; leaf-divisions linear to ovate-lanceolate, 1.5-14.5 cm. 

 long, entire; rays 5-18, unequal, 0.6-10.5 cm. long; pedicels 2.5-9 mm. long; ovaries puberulent; fruit 

 oblong, 8-20 mm. long, glabrous or rarely sparsely puberulent. British Columbia south to northern California, 

 eastward to Alberta and northwestern Nevada. Type locality: Klickitat County, Washing;ton. 



Lomatium triternatum var. brevifolium (Coult. & Rose) Mathias, loc. cit. (Peucedanum triternatum 

 var. brevifolium Coult & Rose, Rev. N. Amer. Umbell. 70. 1888.) Plants caulescent, 1.5-3.5 dm. tall, 

 densely soft-puherulent; leaves quinately decompound, leaf-divisions remote, linear, pinnate, 3-22 mm. long; 

 rays 9-11; pedicels 1-4 mm. long; fruit linear-oblong, 6-8 mm. long, densely puberulent. Columbia River 

 Valley, Washington and adjacent Oregon. Type locality: Klickitat County, Washington. 



58. Lomatium Cusickii (S. Wats.) Coult. & Rose. Cusick's Lomatium. 



Fig. 3598. 



Peucedanum Cusickii S. Wats. Proc. Amer. Acad. 21:453. 1886. 

 Lomatium Cusickii Coult. & Rose, Contr. U.S. Nat. Herb. 7: 226. 1900. 

 CogswclHa brecciarum M. E. Jones, Contr. West. Bot. No. 12: 37. 1908. 

 Cogswctlia altensis M. E. Jones, Bull. Univ. Mont. Biol. Ser. 15: 41. 1910. 



Plants caulescent, 1-2.2 dm. tall, cespitose, from long slender fusiform taproots. Leaves 

 ternately compound ; leaf-divisions few, filiform to linear, glabrous to slightly scaberulous ; rays 

 5-12, unequal, 1-3.5 cm. long; bractlets filiform to linear-acuminate, scarious-margined ; pedicels 

 2-6 mm. long; flowers white or purplish; fruit oblong, 11-13 mm. long, glabrous; wings about 

 equaling the body ; oil-tubes 1-3 in the intervals, 5 on the commissure. 



Alpine ridges, Boreal Zones; mountains of northeastern Oregon to western Montana. Type locality: 

 "on the highest summits of the Eagle Creek Mountains [Wallowa Mountains], Union County, Oregon." 

 July-Sept. 



