COULTER AND ROSE—NORTH AMERICAN UMBELLIFERAE. 127 
Specimens examined: 
Texas: Hempstead, Hall 256, June 10, 1872; near Fort Worth, Reverchon, June, 
1879; Hood County, Reverchon, June, 1882; Nealley, in 1888 and 1889. 
OxLAHoMA: Huntsville, Kingfisher County, Laura Blankinship, June 5, 1896; 
Anadarko, Sheldon 167, July 17, 1891. 
41. SPHENOSCIADIUM Gray, Proc. Am. Acad. 6: 586. 1865. 
Calyx teeth obsolete. Fruit flattened dorsally, cuneate-obovate, 
hirsute. Carpel strongly flattened dorsally, strongly ribbed at base, 
winged above; dorsal and 
intermediate wings narrow, 
lateral broader. — Stylopo- 
dium small and conical (or 
flat in flower). Oil tubes 
solitary in the intervals, 2 on 
the commissuralside, Seed 
face plane. 
Nearly simple thick-rooted 
perennials, with stout stems 
glabrous up to the tomentose 
umbel, once or twice pinnate 
leaves with bladdery dilated 
petioles, no involucre, invo- 
lucels of numerous linear- 
setaceous bractlets, and scarious white or sometimes purplish flowers 
sessile on an enlarged receptacle and forming a compact head, 
Type species, Sphenosciadium capitellatum Gray. 
A genus of at least 2 species, belonging to the Sierra Nevada of Cal- 
ifornia and adjacent Nevada, northward to eastern Oregon and Idaho. 
This species was merged under Selinwn by Bentham & Hooker, but it seems to us 
entirely worthy of restoration. Its inflorescence is very peculiar, and the discovery 
of one if not more additional species confirms its generic rank. , 
Fic. 42.—Sphenosciadium capitellatum: a, b, x 6. 
Foliage glabrous; fruit about 5 min, long...--------------------- 1. SN. capitellatum., 
Foliage somewhat scabrous; fruit about 7 mm. long ..---------- 2%" ryngitfolium. 
1. Sphenosciadium capitellatum (iray, Proc. Am. Acad. 6: 537. 1865. 
Fig. 42. 
- Selinum capitellatum Watson, Bot. King Sury. 126. 1871. 
Very stout, 3 to 15 dm. high; leaves large and glabrous; the leaflets 
oblong to linear-lanceolate, 2.5 to 5 cm. long, with rather few laciniate 
teeth or lobes, more or less entire below; umbel equally 4 to 15-rayed, 
with globose umbellets of sessile pubescent’ flowers having involucels 
of a few deciduous bractlets; rays 2.5 to 5 cm. long; fruit cuneate- 
obovate, about 5 mm. long. 
Type locality, ‘in the Sierra Nevada, near Ebbett’s Pass [Alpine 
County, Cal.], by a stream, in flower:” collected by Brewer; type in 
Herb. Gray. Associated with the type in the original description is 
Anderson, from near Carson City, Nev., in fruit. 
