COULTER AND ROSE—NORTH AMERICAN UMBELLIFERAE. 245 
in stylopodium-disk, calyx teeth, more winged dorsal and intermediate ribs, and in 
its very peculiar habit. Its relationships seem to be much nearer Pteryaa and 
Pseudocymopterus. 
Foliage glabrous. 
Rays and pedicels not very short or reflexed. 
Pedicels 2 to6 mm, long................-.-------------------- 1. CL naitalliv. 
Pedicels 8 to 16 mim. long. 
Fruit linear-oblong, 4 to 7 mm, long.......--.--------.------ 2. CL alpinum. 
Fruit broader, 10 to 12 mm, long.........--------------------- 3. CL parryi. 
Rays and pedicels very short, reflexed at maturity ......2..----- 4. CL brandegei. 
Foliage very scabrous. 
Pedicels 12 to 18 mm. long; wings about as broad ‘as body -..--- 5. Cl eastwoodae. 
Pedicels 2 to 6 mm. long; wings half as broad as body........---- 6. CL seabrum. 
1. Cynomarathrum nuttallii (Gray) C. & R. 
Seseli nuttallii Gray, Proc, Am. Acad. 8: 287. 1870. 
Peucedanum graveolens Watson, Bot. King Surv. 128, 1871. 
Peucedanum kingii Watson, Proc. Am. Acad. 22: 474. 1887. 
Peucedanum megarrhiza A. Nelson, Bull. Torr. Bot. Club 26: 130, 1899. 
Acaulescent, glabrous; scape 1.5 to 4.5 dm. high, a little exceeding 
the leaves, arising from a stout caudex becoming multicipital; leaves 
pinnate or bipinnate; leaflets linear, elongated, cuspidate, sometimes 
5 em. long; umbel somewhat equally + to 20-rayed, with involucels of 
linear-lanceolate bractlets; rays 3 to 3.5 cm. long; pedicels 2 to 6 mm. 
long: flowers yellow; calyx teeth evident; fruit oblong, 8 to 10 mm. 
long, 4 mm. broad, narrowly winged, the dorsal and intermediate ribs 
also sometimes irregularly winged; oil tubes 8 to 5 in the intervals, 
6 to 10 on the commissural side: seed somewhat sulcate on the back, 
with slightly concave face. 
Type locality, ** Rocky Mountains;” collected by Wutta//,; type in 
Herb. Columbia Univ. 
Northern Utah, Wyoming, and western Nebraska. 
Specimens evamined: 
Uran: Wasatch Mountains, altitude 2,700 meters, Watson 463, July, 1869; on the 
Mooseneeah, altitude 2,700 to 3,000 meters, Ward 667, 697, June-August, 1875. 
Wyominc: Evanston, Uinta County, Ne/son 2958, May 28, 1897; Point of Rocks, 
Nelson 4769, June 16, 1898 (type of P. megarrhiza Nelson). 
NesRAsKA: Scotts Bluff, in the pass, Rydberg 129, July 22, 1891. 
2. Cynomarathrum alpinum (Watson) C. & hk. 
Peucedanum graveolens alpinuin Watson, Bot. King Sury. 129. 1871. 
Peucedanum kingii alpinum C. & R. Rey. N. Am. Umbell. 71. 1888. 
Resembling a dwarf form of C. niufta///7, with scapes 1 to 2.5 em. 
high; leaves about 7.5 cm. long, mostly simply pinnate, with 8 to 5 
pairs of linear and entire leaflets; umbel 3 to 6-rayed, with involucels 
of narrow bractlets; rays 2.5 to 5 em. long; pedicels 8 to 12 mm. long; 
flowers yellow; calyx teeth evident; fruit linear-oblong, 4 to 7 mm, 
long; oil tubes very obscure, | or 2 in the intervals, £ to 6.on the com- 
missural side. 
