CARROT FAMILY 611 



1. G. occidentalis Nutt. Stem stout, usually puberulent, 6-12 dm. high; 

 leaves twice or thrice pinnately ternate; leaflets oblong-lanceolate, 3-10 cm. long, 

 acute, serrate; pedicels 2-8 mm. long; fruit distinctly beaked; stylopodiuni 

 conic, nearly 1 mm. long. Osmorrhiza occidentalis Torr. Hillsides and valleys 

 Alta Colo. Calif. B.C. Submont. Mont. Je-Au. 



2. G. maxima Rydb. Stem 1 m. high or more, puberulent or glabrous, 

 pilose at the nodes; lower leaves twice compound, first pinnate and the lower 

 primary divisions ternate; the upper leaves ternate or twice ternate; leaflets 

 oblong-lanceolate, 5-10 crn. long, minutely puberulent; pedicels in fruit 1-1.5 

 cm. long; fruit contracted above into a beak, 2 mm. long; stylopodium conic, 

 0.5 mm. long. Mountains: Utah Mont. Submont. Jl-Au. 



7. LEIBERGIA Coult, & Ross. 



Slender glabrous acaulescent plants, from small globose corms. Leaves 

 ternately divided into long filiform leaflets. Flowers white, in irregular umbels. 

 Calyx-teeth obsolete. Stylopodium wanting. Fruit slightly flattened laterally, 

 linear, beaked, glabrous. Ribs filiform. Oil-tubes small, solitary in each inter- 

 val, 2 on the commissural side. Seed-face broad, slightly concave, but in drying 

 becoming involute. 



1. L. orogenioides Coult. & Rose. Stem 1-5 dm. high; branches of the umbels 

 3-10, often spreading, 2-12 cm. long; pedicels very short; fruit 8 mm. long, 1 

 mm. broad. Cogswellia orogenioides M. E. Jones, in part. Wet grounds, pine 

 woods: Ida. Wash. My-Je. 



8. OROGENIA S. Wats. TURKEY PEAS. 



Dwarf glabrous acaulescent perennials, with tuberous or fusiform corms or 

 roots. Leaves ternate, with linear divisions. Flowers white, in small sub- 

 compound umbels with very unequal rays. Calyx-teeth minute. Stylopodium 

 depressed. Fruit oblong, slightly flattened laterally, glabrous. Carpels strongly 

 flattened dorsally. Dorsal and intermediate ribs filiform; lateral ribs strongly 

 corky thickened and inflexed towards the other carpel, leaving empty cavities 

 between them, the carpels, and a thick corky projection from the middle of the 

 commissure of each carpel. Oil-tubes very small, 3 in each interval, 2-4 on the 

 commissural side. Seed-face slightly concave. 



Stem from a deep-seated round corm. 1. O. lineari folia. 



Stem from a fusiform long root. 2. O. Leibergii. 



1. O. linearifolia S. Wats. Stem scapiform, usually about 1 dm. high; 

 leaves 2-3, ternate or biternate, slender-petioled, glabrous; divisions entire, 

 linear, 2-5 cm. long, 2-6 mm. wide; umbels 2-10-rayed; flowers sessile or nearly 

 so; fruit 3-4 mm. long; ribs rather prominent. Mountain sides and ridges: 

 Wash. Ore. Utah Colo. Submont. Mont. Mr-Je. 



2, O. Leibergii (Coult. & Rose) Rydb. Stem scapiform, 3-4 dm. high, 

 glabrous; leaves twice or thrice ternate; divisions 2-4 cm. long, linear. 0. fusi- 

 formis Leibergii Coult. & Rose. Sand hills: Ida. Je. 



9. EULOPHUS Nutt. 



Glabrous caulescent perennials, with fascicled tuberous roots. Leaves pin- 

 nately or ternately compound, with narrow, linear to oblong-linear leaflets, of 

 which the terminal one usually is elongate. Bracts lanceolate or rarely want- 

 ing; bractlets lanceolate, several, subscarious. Flowers white or pinkish, in 

 long-peduncled umbels. Calyx-teeth prominent. Stylopodium conic; styles 

 long, recurved. Fruit laterally flattened, ellipsoid to linear-oblong, glabrous. 

 Ribs filiform; pericarp thin. Oil-tubes 1-5 in the intervals, 4-8 on the commis- 

 sural side. Seed-face broadly concave, with a central longitudinal ridge. 



1. E. Bolanderi (A. Gray) Coult. <fe Rose. Stem 3-6 dm. high; lower 

 leaves twice pinnately compound; leaflets entire or divided into linear or oblong 

 divisions, 1-3 cm. long, the upper less compound or simple; umbels 

 rayed; involucres and involucels of oblanceolate, acuminate, scarious bracts 



