CARROT FAMILY 611 



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

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

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

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

 Alta. — Colo" — Calif. — B.C. Suhmont. — Mont. Je-Au. 



2. G. maxima Rj-db. Stem 1 m. high or more, puberulent or glabrous, 

 pilose at the riode.s; lower leaves twice compound, first pinnate and the lower 

 primary' divisions temate; the upper leaves ternate or twice ternate: leaflets 

 oblong-lanceolate, 5-10 crp. 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. Suhmont. Jl-Au. 



7. LEIBERGIA Coult. & Rose. 



Slender glabrous acaulescent plants, from small globose corms. Leaves 

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

 Calyx-teeth obsolete. Stjdopodium wanting. Fruit slightly flattened lateraUj-, 

 linear, beaked, glabrous. Ribs filiform. OU-tubes smaU, soUtar\- in each inter- 

 val, 2 on the commissural side. Seed-face broad, shghtly concave, but in dr>'ing 

 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. Cngsirellia orogenioides ]\I. 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- 

 compoiind imabeLs 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. Unearifolia. 



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



1. O. Unearifolia 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. Leiberg-ii (Coult. & Rose) Rydb. Stem scapiform, 3^ dm. high, 

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

 formis Leibergii Coult. 6: Rose. Sand hills: Ida. Je. 



9. EtJLOPHUS Xutt. 



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

 nateh' or ternately compoiind, 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 imabels. Cah'x-teeth prominent. Stylopodiimi conic; styles 

 long, recur\-ed. Fruit laterally flattened, elhpsoid to linear-oblong, glabrous. 

 Ribs filiform: pericarp thin. Oil-tubes 1-5 in the inter^'als, 4— S on the commis- 

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



1. E. Bolanderi (A. Gray) Coult. & 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 10-25- 

 raj-ed; involucres and involucels of oblanceolate, acuminate, scarious bracts 



