CARROT FAMILY 261 



41. Lomatium Engelmannii Mathias. Engelmann's Lomatium. Fig. 3581. 



Lomatium Engelmannii Mathias, Ann. Mo. Bot. Card. 25:268. 1937. 



Plants acaulescent, 1-3 dm. tall, pubescent to glabrate, from a long slender taproot. Leaves 

 ternate or pinnate; leaf-divisions confluent, ovate-oblong to linear-lanceolate, 1-15 mm. long; 

 petioles wholly sheathing, purplish; fertile rays 1-4, unequal, 1-10 cm. long; bractlets usually 

 absent; pedicels 2-12 mm. long; flowers yellow; fruit ovate-oblong, 9-14 mm. long, glabrous; 

 wings half the width of the body ; oil-tubes 1-2 in the intervals, 2-6 on the commissure. 



Gravelly slopes, Canadian Zone; high mountains of southwestern Oregon and northwestern California. 

 Type locality: Scott's Mountain, Siskiyou County, California. June— Aug. 



42. Lomatium angustatum (Coult. & Rose) St. John. Cascade Lomatium. 



Fig. 3582. 



Feucedanum Martindalei var. angustatttm Coult. & Rose, Bot. Gaz. 13: 143. 1888. 



Lomatium Hallii of authors, not Peuccdanum Hallii S. Wats. 1876. 



Lomatium angustatum St. John in St. John & Hardin, Mazama 11: 83. 1929. 



Plants short-caulescent, 1.5-2 dm. tall, glabrous, from a long slender taproot. Leaves 

 ternate, then 2-3-pinnate ; leaf-divisions confluent and overlapping, ovate, 1-2 mm. long, some- 

 what obtuse; rays 6-16, unequal, 0.5-7 cm. long; bractlets absent; pedicels 1-6 mm. long; 

 flowers creamy white; fruit narrowly oblong, 6-10 mm. long; wings very narrow; oil-tubes 

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



Rocky slopes. Boreal Zones; mountains of western British Columbia to the Cascade Mountains, Oregon. 

 Type locality: Cascade Mountains, Oregon. 



Lomatium angustatum var. flavum G. N. Jones, Univ. Wash. Pub. Biol. 5: 202. 1936. Leaves soraetitnes 

 fleshier; flowers lemon-yellow; pedicels 8-16 mm. long. Olympic Mountains, Washington, the type locality. 



43. Lomatium dissectum (Nutt.) Math. & Const. Fern-leaved Lomatium. 



Fig. 3583. 



Leptotaenia dissccta Nutt. ex. Torr. & Gray, Fl. N. Amer. 1 : 630. 1840. 



Leptotaenia dissecta var. foliosa Hook. Lond. Journ. Bot. 6: 236. 1S47. 



Cynapium ? Bigelovii Torr. Pacif. R. Rep. 4^: 94. 1857. 



Ferula dissoluta S. Wats. Bot. Calif. 1: 271. 1876. 



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



Plants caulescent, rarely acaulescent, 8-14 dm. tall, foliage puberulent or rarely glabrous, 

 from a stout thickened root bearing a stout caudex. Leaves ternate, then 2-4-pinnate ; leaf- 

 divisions linear-oblong, 2-8 mm. long, puberulent; stem-petioles dilated; rays numerous, 3-13 

 cm. long, subequal ; bractlets few, linear, entire ; pedicels 1-3 mm. long ; flowers purple or 

 yellow; fruit oblong-oval, 12-16 mm. long; wings very thick and corky, much narrower than 

 the body; oil-tubes obscure. 



Rocky soil, Transition and Boreal Zones; western Washington to northern California, east to Idaho. 

 Type locality: "Plains of the Oregon near the confluence of the Wahlamet." June-Aug. 



Lomatium dissectum var. multifidum (Nutt.) Math. & Const. Bull. Torrey Club 69:246. 1942. 

 (Leptotaenia multifida Nutt. ex Torr. & Gray, Fl. N. Amer. 1:630. 1840; Leptotaenia Eatonn Coult. & 

 Rose, Rev. N. Amer. Umbell. 52. 1888.) Leaf-divisions 2-22 mm. long; pedicels 4-20 mm. long, exceedmg 

 the sterile flowers. British Columbia to southern California, east to Alberta. Colorado and Arizona. More 

 common and widely distributed than the typical form. Type locality: "plains of the Oregon [Columbia], east 

 of Wallawallah, and in the Blue Mountains." 



44. Lomatium columbianum Math. & Const. Columbia Lomatium. Fig. 3584. 



Fern/a ^Mr/)Mr(?a S. Wats. Proc. Amer. Acad. 21 : 453. 1886. Hot Lomatium purpureum A. 'iieXs. 1901. 

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



Plants acaulescent, glabrous, 3-5 dm. high, from a stout, thickened root bearing a caudex 

 clothed with purplish, dilated, bladeless sheaths. Leaves ternate, then 2-4-pinnate ; leaf-divisions 

 linear to filiform, 3-20 mm. long ; rays 6-10, 3-20 cm. long, unequal ; bractlets linear to lanceo- 

 late; pedicels 15-25 mm. long; flowers purple; fruit oblong to oval, 16-24 mm. long; wmgs 

 thick and corky, much narrower than the body; oil-tubes 2-3 in the intervals, 4 on the com- 

 missure. 



Basaltic bluffs Arid Transition Zone; Columbia River Gorge and vicinity, Oregon and Washington. 

 Type locality: lower Columbia River, Klickitat County, Washington. April-July. 



45. Lomatium Grayi Coult. & Rose. Gray's Lomatium. Fig. 3585. 



Peuccdanum ,ni!!efotium S. Wats. Bot. King Expl. 129. 1871. Not Sonder, 1861-62. 



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



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



Feucedanum Grayi var. abcrrans M. E. Jones, Contr. West. Bot. No. 10:55. 1902. 



Leptotaenia filicina M. E. Jones, op. cit. 56. 



Plants acaulescent or short-caulescent, 2-6.1 dm. tall, from a long thickened taproot. Leaves 

 1-2-ternate or quinate, then 2-3-pinnate, glabrous to scaberulous ; leaf-divisions crowded, linear 

 to filiform, 1-11 mm. long; ravs 7-22, spreading, 2-15 cm. long; bractlets filiform, entire oc- 

 casionally toothed, rarely deciduous ; pedicels 6-22 mm. long ; flowers yellow ; fruit ovate-oblong 



