626 AMMIACEAE 



7. C. bicolor (S. Wats.) M. E. Jones. Corm napiform; stem 1-4.5 dm. 

 high, glabrous or slightly puberulent; leaves ternate, then repeatedly pinnate, 

 with numerous filiform divisions; sheath inflated; bractlets 1-8, linear-subulate; 

 pedicels very short; fruit linear-oblong, glabrous, 10-12 mm. long, 2-5 mm. 

 wide; wings very narrow. P. bicolor S. Wats. Hillsides: Utah Ida. Mont. 

 Son. Submont. My-Je. 



8. C. circumdata (S. Wats.) M. E. Jones. Corm subglobose; stem 2-3 dm. 

 high, more or less leafy; leaves ternate, then once or twice pinnate; ultimate 

 segments linear, 2-12 mm. long; sheath of the stem-leaves broadly dilated; 

 bractlets oblanceolate, becoming scarious; fruit oblong-elliptic, 6-8 mm. long, 3 

 mm. wide, with narrow wings. P. circumdatum S. Wats. Hillsides: Wash. 

 Mont. Ida. Ore. Submont. Ap-Je. 



9. C. Cous (S. Wats.) M. E. Jones. Corm globose or napiform, 1-2.5 cm. 

 thick; stem scapiform, 5-15 cm. high; leaves ternate, then twice pinnately dis- 

 sected; ultimate segments short, linear, entire or few-toothed; bractlets broadly 

 oblanceolate, scarious-margined; fruit elliptic, scabrous-puberulent, 6-8 mm. 

 long, 3-4 mm. wide, with narrow wings. P. Cous S. Wats. Stony ridges: Ore. 

 Ida. Wash. Plain Submont. AD Je. 



10. C. montana (Coult. & Rose) M. E. Jones. Corm napiform or fusiform, 

 or plant sometimes with thickened roots; scape 1-3 dm. high; leaves usually 

 ternate and then once or twice pinnate; leaflets short-oblong, crowded; bract- 

 lets obovate or oblanceolate, with white or purplish scarious margins; fruit 

 elliptic, glabrous, 5-6 mm. long, 2-3 mm. wide; wings about half as broad as 

 the body. Lomatium montanum Coult. & Rose. L. purpureum A. Nels. Hill- 

 sides: Ore. Wyo. N.D. Submont. Mont. My-Je. 



11 . C . concinna Osterhout . Perennial, from a fleshy root ; stem 2-3 dm . high, 

 much branched near the ground; leaves sheathing at the base, 1 dm. long, ovate 

 in outline, glabrous, twice pinnately divided into linear-oblong divisions; ped- 

 uncles 1-2 dm. long, decumbent at the base; bractlets united, forming a single 

 leaf, divided into oblong lobes; fruit oval, 7-8 mm. long; wings broad; oil-tubes 

 5-10 in the intervals, 8-15 on the commissure. Hills: Colo. Submont. My. 



12. C; orientalis (Coult. & Rose) M. E. Jones. Perennial, with a thick 

 taproot; stem often scapiform, 1-3 dm. high; leaves bipinnate; segments oblong 

 or lanceolate, pinnately cleft into short oblong divisions, grayish-pilose with 

 short hairs; bractlets lanceolate, distinct, scarious-margined; fruit glabrous, oval, 

 5 mm. long, 4 mm. wide; wings not as broad as the body. P. nudicaule Nutt. 

 in part. Jjomatium orientate Coult. & Rose. Dry plains: Minn. Kans. 

 N.M. Ariz. Mont. Plain Submont. Ap-Je. 



13. C. nevadensis (S. Wats.) M. E. Jones. Perennial, with a fusiform 

 root; stem short, 1-4 dm. high, puberulent; leaves twice or thrice pinnatifid, 

 grayish-pilose, with small oblong divisions; bractlets linear-lanceolate, usually 

 distinct; fruit oval or ovate, somewhat pubescent, 6-10 mm. long, 4-8 mm. 

 wide; wings almost as broad as the body. P. nevadense S. Wats. Mountains: 

 Ore. Utah Ariz. Calif. Son. Submont. Ap-My. 



14. C. macrocarpa (Nutt.) M. E. Jones. Perennial, with an elongate 

 fusiform root; stem 1-6 dm. high, more or less pubescent, branched at the base; 

 leaves three or four times pinnately (or the first division ternately) dissected 

 into short linear or oblong divisions, more or less pubescent; bractlets somewhat 

 foliaceous, lanceolate or linear, often united and unilateral; calyx-teeth evident; 

 fruit elliptic, glabrous, 1-2 cm. long, 5-7 mm. wide; wings nearly as broad as 

 the body. P. macrocarpum Nutt. Hills and plains: Sask. Colo. Calif. 

 B.C. Plain Submont. Ap-Je. 



15. C. villosa (Raf.) Schultes. Perennial, with a fusiform root; leaves 

 finely dissected, first ternate, then several times pinnate, villous; segments 

 numerous, linear, crowded; bractlets conspicuous, lanceolate, more or less united, 

 very tomentose; pedicels 2-6 mm. long; fruit oval, puberulent or pilose, 5-8 mm. 

 long, 4^5 mm. wide. L. villosum Raf. Dry plains and hills: Sask. w Kans.- 

 Wyo. Alta. Plain Submont. My-Je. 



