CARROT FAMILY 627 



16. C. Jonesii (Coult. & Rose) M. E. Jones. Perennial, with a fusiform 

 root, acaulescent; scape 1-2 dm. high; leaves ternate and then repeatedly pin- 

 nate, villous, with very small crowded, oblong segments; bractlcts linear, dis- 

 tinct, villous; pedicels 3-12 mm.; flowers j'ellow or tinged with purple; fruit 

 oval, pubescent, 8 mm. long, 6-7 mm. wide. L. Jonesii Coult. & Rose. Dry 

 plains and canons: Alta. — Utah — Ida. Plain — Sub7uo7it. Ap-My. 



17. C. MacDougalii (Coult. & Rose) M. E. Jones. Perennial, with a 

 fusiform root, acaulescent; scape 1-2 dm. high; leaves first ternate, then several 

 times pinnate, with numerous very small linear segments, densely pilose, with 

 short hairs; bractlets hnear, distinct or nearly so, hirsute; fruit elliptic, somewhat 

 pubescent, 6-7 mm. long, 4 mm. wide. L. MacDougalii Coult. & Rose. Dry 

 places: Ariz. — Utah — Nev. Son. Mr-My. 



18. C. Grayi Coult. & Rose. Perennial, with a fusiform root, glabrous 

 throughout; scapes 1-4 dm. high; leaves ternate, then repeatedly pinnate; seg- 

 ments very nmnerous, linear-filiform; bractlets linear-subulate, distinct; flowers 

 yellow; fruit oval, 1()-16 mm. long, 7-9 mm. wide; wings nearly as broad as the 

 body. Peiicedanum millefolium S. Wats., not Sonder. F. Grayi Coult. & Rose. 

 Plains and hills : Wyo. — Colo. — Utah — Ore. — Wash. Plain — Submont. IMr-My. 



19. C. lapidosa (M. E. Jones) Rydb. Perennial, with a fusiform deep- 

 seated root; stem barely rising above ground, bearing a crown of leaves and 

 peduncles; leaves 5-10 cm. long, bipinnate, with crowded obovate cleft divisions; 

 bracts and bractlets several, linear; fruit oblong, glabrous, 6-7 mm. long, 2-2.5 

 mm. broad; lateral wings half as broad as the body; dorsal ribs prominent, but 

 not winged; calyx-teeth evident; stylopodium depressed. Peucedanum and 

 Cymopterus lapidosus M. E. Jones. Among rocks: Utah — Wyo. My-Je. 



20. C. Donnellii (Coult. & Rose) M. E. Jones. Perennial, with a fusiform 

 root; stem 1.5-3 dm. high, glabrous; leaves ternate and then twice or thrice 

 pinnatifid; ultimate lobes linear or oblong, glabrous; bractlets linear, acuminate; 

 fruit oval, glabrous, 7-8 mm. long, 4-6 mm. wide; wings less than half as wide 

 as the body. P. Donnellii Coult. & Rose. Dry valleys and sage-brush flats: 

 Ore. — Ida. Son. My-Je. 



21. C. Sandbergii (Coult. & Rose) M. E. Jones. Perennial, with an elon- 

 gate taproot; stem 1-3 dm. high, rough-puberulent; leaves ternate and then 

 repeatedly pinnately dissected into short linear divisions, more or less puberulent; 

 sheaths much enlarged and with conspicuous white scarious margins; bractlets 

 distinct, linear-lanceolate; flowers bright yellow; fruit oval, puberulent, 4—5 mm. 

 long, 3 mm. wide; wings narrow. P. Sandbergii Coult. & Rose. Mountains: 

 Alta. — Mont. — Ida.^ — B.C. Plain — Submont. Je-Au. 



22. C. juniperina M. E. J(*)nes. Perennial, with a fusiform root; stems 

 more or less purplish, ashy puberulent, 1-3 dm. high; leaves ternate or biternate 

 and then bipinnate; ultimate segments linear to lanceolate, 2-5 mm. long; sheath 

 enlarged; bractlets several, lanceolate to filiform-subulate; flowers yellow; fruit 

 elliptic, 6-8 mm. long, 4 mm. wide; wings narrower than thebody. P.juniper- 

 inum M. E. Jones. Among junipers on hills: Utah — Wyo. Son. My-Je. 



23. C. simplex (S. Wats.) Rydb. Perennial, with an elongate taproot; 

 stem stout, 2-5 dm. high, puberulent; leaves ternate or biternate; leaflets linear- 

 lanceolate, 5-10 cm. long, puberulent beneath; fruit broadly elliptic to nearly 

 orbicular, 6-12 mm. long, -^10 mm. wide. P. simplex Xutt. Lomatium platy- 

 carpum (Torr.) Coult. & Rose. Cogswellia plalycarpa M. E. Jones. C. altensis 

 M. E. Jones, a form with narrow leaf -segments. Mountains and hillsides: Alta. 

 — Colo. — Utah — Ore. — Wash. Submont. My-Je. 



24. C. leptophylla (Hook.) Rydb. Perennial, with taproot; stems more 

 or less puberulent, 3-4 dm. high; leaves usually twice ternate; leaflets linear, 

 sometimes almost filiform, 2-7 cm. long, 1-4 mm. wide, puberulent; fruit puberu- 

 lent, 6-7 mm. long, 3.5-4.5 mm. wide. P. triternaium leptophyllum Hook. 

 Hills and mountains: Mont. — Ida. Submont. Ap-Je. 



25. C. triternata (Pursh) M. E. Jones. Perennial, with an elongate tap- 

 root; stem 3-7 dm. high, puberulent; leaves biternate or triternate; leaflets linear 



