Osmorrhiza. UMBELLIFEILE. . 261 



nearly 1 i lines long, broadly ovate ; ribs and broad oil-tubes conspicuous : seed 

 nearly terete or somewhat hollowed on the face. 



Across the continent from New England and Florida to Washington Territory and the Sierra 

 Nevada ; Mono Pass (Bolander), and reported from Fort Tejon, Xnnlus. It is doubtful whether 

 it extends to the coast, most of the specimens reported from that region belonging apparently to 

 C. California!. The species is also native of Europe and Asia. 



2. C. Bolanderi, Watson. Leaves bipinnate, the leaflets narrowly lanceolate, 

 sharply long-acuminate, two inches in length, very acutely serrate, the veinlets 

 passing to the sinuses ; the lower leaflets petiolulate and often deeply lobed : in- 

 volucre of several linear leaflets : fruit two lines long, nearly orbicular, strongly 

 ribbed and with broad oil-tubes, which are sunk in the channelled seed. — Proc. 

 Am. Acad. xi. 139. 



At Suisun, in salt marshes, Bolandcr. 



3. C. Californica, Gray. Very stout, 3 to 5 feet high : leaves pinnate, or the 

 lower bipinnate at base ; the leaflets 2 to 4 inches long, lanceolate, shortly acumi- 

 nate, rounded at base, serrate with the veinlets running to the teeth, often deeply 

 lobed on the lower side : involucre none, or a narrow leaflet ; involucels of several 

 lanceolate bracts : fruit broadly ovate, \\ lines long, strongly ribbed : seed not 

 channelled under the oil-tubes, rhomboidal or ovate in section, thinnest at the 

 commissure. — Proc. Am. Acad. vii. 344. 



In the neighborhood of San Francisco and southward to Santa Cruz (Sarlweg) and Monterey, 

 Brewer. 



13. SIUM, Linn. Water Paksnir 



Calyx-teeth minute. Stylopodiuni depressed and styles short. Fruit oblong or 

 ovate, laterally compressed with a narrow commissure, the ribs prominent and wing- 

 like, corky ; oil-tubes 2 or 3 in the intervals. Carpophore 2-parted, slender and 

 usually deciduous with the fruit. — Smooth perennial aquatics, with angled stems ; 

 leaves pinnate and leaflets serrate or pinnatifid ; involucre and involucels of several 

 bracts ; flowers white. 



Half a dozen species arc found in the northern temperate zone and a single one in South 

 Africa. The following species, also Asiatic, is the only one indigenous ill California. 



1. S. cicutaefolium, (imelin. Stout, 3 to G feet high, branching: lower Laves 

 long-petioled, the cauline with a short dilated base; leaflets 6 to 8 pairs, oblong- 

 lanceolate to linear, 2 to 4 inches long, acuminate, sharply serrate or rarely pinnat- 

 ifid, the upper ones shorter and narrower: rays 1 to \\ inches long; involucre 

 and involucels of G to 8 linear bracts: fruit oblong, 1\ lines long, very strongly 

 ribbed. — S. lineare, Michx. 



Reported from Pose Creek, and mentioned by Torrey in Bot. Wilkes Exped. ami by Bolandor 

 ns growing near San Francisco. It is certainly found on the eastern slope of the Sierra Neva. la 

 in Sierra and Truckee Valleys, and thence ranges to Washington Territory, Colorado, the Sos- 



katcliowai d lie' Atlantic. It is also identical with the plant of Siberia, tic older nam.' of 



which is here adopted. Bentham \ Hooker refer both this species and the eastern N. Carsoni to 

 the genus Apium, but they are certainly not to be separated from tie- typical species S. lali- 

 Julium and litiiri/n/iinn of the Old World. In all, the carpophore though delicate is always 

 2-parted, and the oil-tubes are 2 or 3 (perhaps rarely solitary) in the intervals. 



14. OSMORHHIZA, Rafinesgne. Sweet Cicely. 



Calyx-teeth obsolete. Frnii linear-oblong, narrowly attenuate a( base, acute 

 above and lipped by the erect style, e. impressed laterally ami narrowed ii the com- 

 missure; carpels 5-angled, with somewhat prominent slightly corky wings, hispid 

 with short ascending bristles; oil-tubes numerous and verj obscure. Seed terete, 



