COULTER AND ROSE—NORTH AMERICAN UMBELLIFERAE. 11] 
Petioles and rachis not enlarged. 
Fruit larger (4 to 6mm.); Mastern......--.--------------- 1. E. americanus 
Fruit smaller (3 to 4 mm.); Californian......--..------------ 2. HE. parishii. 
Petiole and rachis broad and inflated. 
Leaflets narrowly linear to filiform .........----------.------ 3. FE. pringlei. 
Leaflets linear-lanceolate .......--...------------------------ 4. HE. simplex. 
Involucels of large bractlets longer than the pedicels ........---.- 5, KE. bolanderi. 
Oil tubes solitary in the intervals ........2.....-...-.------------ 6. He. ealifornicus. 
1. Eulophus americanus Nutt. in DC. Coll. Mém. 5: 69. pl. 2. fig. m. 
1829. Fie. 30. 
Erect, 9 to 15 dm. high; basal and lower cauline leaves large, once 
or twice pinnately compound, with leaflets cut into short narrow seg- 
ments; upper cauline leaves ter- 
nate, with narrowly linear elon- 
gated leaflets (2.5 to 5 em. long, 
3 mm. wide); umbel 10 to 12- 
rayed, with involucre scanty or 
none, and involucels of numer- 
ous linear bractlets (tapering 
from the bottom) 2 to 3 mm. 
long; fruit ovate or oblong, 4 to 
6 mm. long, 3 to 4 mm. broad, 
with ribs almost obsolete; oil 
tubes mostly 3 in the intervals, 
4 on the commissural side. 
Type locality, ‘la territoire 
de ? Arkansa;” collected by Vut- 
tall, type in Herb, DC., duplicate in Herb, Columbia Univ. and Herb. 
Philad. Acad. 
Ohio to Missouri, south to Tennessee and Arkansas. 
Fic. 30.—Eulophus americanus: a, x 8; b, < 10. 
Specimens examined: 
Inuixois: Near Athens, Hall, July, 1861; Riverside, near Chicago, Babcock, July 
8, 1871; Naperville, Umbach, June 28, 1897, 
Missourr: Jefferson County, Hasse, June, 1887; Shannon County, Bush 47, 
August 1889, and 1890; Washington County, Martone, July, 1893; Eagle 
Rock, Bush 76, 185, May-June, 1897 and 1898; Swan, Bush 213, June 8, 1898. 
2, Eulophus parishii ©. & R. Rey. N. Am. Umbell. 112. 1888. 
Pimpinella parishii C. & R. Bot. Gaz. 12: 157. 1887. 
Slender, 2 to9 dm. high; leaves ternate (rarely biternate), on petioles 
5 to 13cm. long (the whole leaf, including the petiole, sometimes becom- 
ing 3 dm. long), with narrowly linear (almost filiform) to narrowly 
lanceolate leaflets 2.5 to 7.5 em. long, 1 to 10 mm. wide, terminal leaf- 
let (sometimes 12.5 em. long) more or less distant; uppermost leaves 
simple and bract-like; umbel 8 to 10-rayed, with scanty involucre or 
none, and involucels of 2 to 6 narrowly lanceolate bractlets 4 mm. 
long; rays 1 to 2.5 em. long; pedicels 4 to 8 mm, long; fruit ovate or 
