630 UMBELLIFERAE 



Locs. — Coastal S. Cal.: San Bornardino, ParisJi : Los Angeles, Davulsnn. Sierra Nevada or 

 its east side valleys: Lone Pine, Inyo Co., Jcpson 515;5; Big Pine, Inyo Co., P. ,/. Giraud ; Red 

 Mdw., Madera Co.", A. L. Grant 1561a; Quincy, Hall 937C; Susanville, Pearl Safford ; Ft. Bidwell. 

 Modoc Co.. Jipsou 7021. North Coast i^angcs: Iluniljoldt Bay, Traci/ 2597; High Prairie, Bald 

 Mt., Humboldt Co., Tracy 7179; Shasta Rprs., Condit ; Sisson, Siskiyou Co., Jcpson 14,230; 

 Edgewood, Siskivou Co., T. Brondcgcc ; Oro Pino, Siskivou Co., Butler 456. 



Kefs.— CiccTA nouoLASii C. & R. Contrib. U. S. Nat. Herb. 7:95 (1900) ; .Tep.son, Man. 710, 

 fig. 691 (1925). Slum doiu/lasii DC. Prod. 4:125 (1830), type from northwest America, Douglas. 

 C. occidentalis f. frondosa Greene, Pitt. 2:7 (1889), type loc. Tehachapi, Greene. C. frondosa 

 Greene, Lflts. 2:236 (1912). C. valida Greene, Ic. 238, type loc. e. slope Sierra Nevada in Mono 

 Co., Bolandcr. 



3. C. bolanderi Wats. Suisun Water Hemlock. Stem 5 to 10 feet high, 

 branclied alxive, witli nearly or quite vertical rootstoek and large basal and cauline 

 bipinnate leaves % to 2 feet long; leaflets lanceolate, serrate, 1^4 to 3 inches long; 

 bracts and bractlets lanceolate, the former often scarious-margined; rays 1 to 1^4 

 inches long, subequal, pedicels 2 lines long; fruit 1^/2 to 2 lines long, prominently 

 ribbed, the carpels when quite mature rather strongly concave on the commis- 

 sure, thus appearing somewhat lunate; oil-tubes broad, depressed in the channeled 

 seed. 



Marshes, 1 to 10 feet : Suisun Bay borders. June, f r. Aug. 



Locs. — Suisun Marshes, Jcpson 14,232 ; Benicia, Jepson 14,233 ; Martinez, Davy 6668. 

 Refs. — CicUTA BOLANDERI Wats. Proc. Am. Acad. 11:139 (1876), type loc. Suisun Marshes, 

 Bolander; Jepson, Fl. W. Mid. Cal. 351 (1901), ed. 2, 296 (1911), Man. 711 (1925). 



4. C. vagans Greene. Idaho Water Hemlock. Habit and appearance of 

 no. 2; corky ribs low and broad, brownish, the intervals of the same color and not 

 revealing the oil-tubes. 



Along stream banks, 4000 to 5500 feet : east side of the Sierra Nevada in Ne- 

 vada Co. East to Nevada, north to Idaho. July, fr. Sept. 



Locs. — Truckee, Sonne 51, Kennedy 4603. Nev. : Reno, Kennedy. 



Refs. — CicuTA VAGANS Greene, Pitt. 2:9 (1889), type loc. Lake Pend d'Oreille, Ida., Greene; 

 Jepson, Man. 711 (1925). C. sonnei Greene, Lflts. 2:239 (1912), type loc. Truckee, Sonne, Greene. 



18. OENANTHE L. 



Aquatic glabrous herbs with succulent stems from thick rootstocks. Leaves 

 pinnately compound. Flowers white, in compound umbels terminating the 

 branches. Involucre present or none. Involucels present. Calyx-teeth rather 

 prominent. Styles slender, at length elongated and Yz as long as the fruit. Fruit 

 in ours cylindric, slightly flattened laterally. Ribs broad, obtuse, corky; commis- 

 sural face also corky. Oil-tubes solitary in the intervals, 2 on the commissure, the 

 seed furrowed beneath them. — Species about 30, all continents save South Amer- 

 ica. (Ancient Greek name of some thorny plant.) 



1. 0. sarmentosa Presl. Pacific Oenanth. Stems 2 to 4 feet high; leaves 

 bipinnate, or the lowest ones elongated-pinnate (1 to 2 feet long), or partially 

 bipinnate towards the base; leaflets ovate, serrate, coarsely toothed or incised, % 

 to 11/2 (or 21/^) inches long; rays % to 1 inch long; bracts few or none; bractlets 

 lanceolate, acuminate; fruit 1 to 2 lines long, the ribs very corky and somewhat 

 turgid. 



Slow streams or shallow ponds, often filling them with dense masses, 5 to 3000 

 feet: coastal Southern California; Coast Ranges; rare in the northern Sierra Ne- 

 vada. North to British Columbia. June. 



Locs. — Coastal S. Cal.: Laguna Mts., e. San Diego Co., T. Brandegee ; Palomar Mt., T. Bran- 

 degee; San Bernardino Valley, Parish 976; Ballona Creek, Los Angeles Co., Ahrams 2526. Coast 

 Ranges: Carmel River, Jepson 14,224; Alviso, Santa Clara Co., Jepson 9316 (intergrade to var. 

 californica) ; Guerneville, Sonoma Co., E. Ferguson; Ft. Bragg, W. C. Mathews 164; Centerville, 

 Humboldt Co., Tracy 6910; Samoa, Humboldt Co., Tracy 3088. Northern Sierra Nevada: 



