238 UMBELLIFERAE 



2. Cicuta Bolanderi S. Wats. Bolander's Water Hemlock. Fig. 3519. 



Cicuta Bolanderi S. Wats. Proc. Amer. Acad. 11: 139. 1876. 



Stout, 10-30 dm. high. Leaves oblong to ovate, 1.5-3.5 dm. long, 1-2-pinnate; leaf-divisions 

 linear to oblong-lanceolate, acuminate, 5-9 cm. long, finely to coarsely serrate ; rays subequal to 

 very unequal, 2-5 cm. long ; fruit oval, 3-4 mm. long, constricted at the commissure ; ribs low 

 and corky, narrower than the broad, darker-colored intervals ; oil-tubes large ; seed very oily, 

 deeply sulcate under the tubes. 



Salt marshes. Upper Sonoran Zone; central and southern California. Type locality: Suisun, Solano County, 

 California. Aug.-Sept. 



3. Cicuta Douglasii (DC.) Coult. & Rose. Douglas' Water Hemlock. Fig. 3520. 



r Slum ? Douglasii DC. Prod. 4: 125. 1830. 



Cicuta calif ornica A. Gray, Proc. Amer. Acad. 7: 344. 1868. 



Cicuta occidentalis Greene, Pittonia 2: 7. 1889. 



Cicuta purpurata Greene, op. cit. 8. 



Cicuta vagans Greene, op. cit. 9. 



Cicuta Douglasii Coult. & Rose, Contr. U.S. Nat. Herb. 7: 95. 1900. 



Cicuta grandifolia Greene, Leaflets Bot. Obs. 2: 24. 1909. 



Cicuta frondosa Greene, op. cit. 236. 1912. 



Cicuta subfalcata Greene, op. cit. 237. 



Cicuta valida Greene, op. cit. 238. 



Cicuta Sonnei Greene, op. cit. 239. 



Cicuta fintbriata Greene, op. cit. 240. 



Stout, from a vertical or horizontal tuberous base, 6-20 dm. high. Leaves oblong to ovate, 

 1.2-3.8 dm. long, 1-3-pinnate; leaf-divisions linear-lanceolate to ovate-lanceolate, 3-10 cm. 

 long, remotely to coarsely serrate or incised; bractlets several, ovate-lanceolate to linear, 2-15 

 mm. long ; rays 2-6 cm. long ; fruit ovoid to globose, 2-4 mm. long ; ribs low and corky, usually 

 broader than the reddish browii or homochromous intervals ; oil-tubes small ; seed not very 

 oily, not sulcate under the tubes. 



Marshes, mostly fresh-water, Upper Sonoran Zone to Canadian Zone; Alaska to California, east to Al- 

 berta, Arizona and northern Mexico. Type locality: "in America boreali occid." June-Aug. 



24. OENAnTHE L. Sp. PI. 254. 1753. 



Mostly aquatic glabrous herbs with succulent stems and pinnate or pinnately decom- 

 pound leaves. Involucres usually present. Involucels of numerous bractlets. Flowers 

 white. Sepals rather prominent, persistent. Fruit oblong (in our species), slightly flat- 

 tened laterally if at all, glabrous. Carpels semiterete with broad obtuse corky ribs; a 

 band of strengthening cells investing the seed and oil-tubes. Stylopodium conical; styles 

 elongate, persistent. Oil-tubes solitary in the intervals, 2 on the commissural side. Seed 

 sulcate beneath each oil-tube. [Ancient Greek name of some thorny plant.] 



About 30 species, all but the following and one Mexican species native of the Old World. Type species, 

 Oenanthe fistulosa L. 



1. Oenanthe sarmentosa Presl. Pacific or American Oenanthe. Fig. 3521. 



Oenanthe sarmentosa Presl in DC. Prod. 4: 138. 1830. 



Helosciadium californicum Hook. & Am. Bot. Beechey 142. 1832. 



Oenanthe californica S. Wats. Proc. Amer. Acad. 11: 139. 1876. 



Oenanthe sarmentosa var. californica Coult. & Rose, Rev. N. Amer. Umbell. 92. 1888. 



Stems succulent, 5-15 dm. high. Leaves bipinnate; leaf-divisions approximate, ovate, 1-6 

 cm. long, acuminate, toothed, often lobed at base ; rays many, 1 . 5-3 cm. long ; bracts few or 

 none, when present linear ; bractlets similar and more numerous ; pedicels many, 2-6 mm. long ; 

 fruit 2.5-3.5 mm. long, the ribs very corky. 



Aquatic, in sluggish streams or marshes, mainly Humid Transition Zone; British Columbia, mainly along 

 the coast to southern California extending inland to the Willamette Valley, Oregon, and Idaho, south to the 

 northern Sierra Nevada, California. Type locality: Nootka Sound, Vancouver Island. June-Oct. 



25. PODISTERA S. Wats. Proc. Amer. Acad. 22: 475. 1887. 



Dwarf cespitose perennials with once or twice pinnate leaves. Umbels compound 

 but condensed. Involucre present or none; involucels of conspicuous, dimidiate, entire, 

 3-5-cleft or toothed bractlets. Flowers orange-yellow to purplish. Sepals prominent. 

 Fruit flattened laterally, oblong-ovoid to ovoid, glabrous; ribs slender; stylopodium 

 conical ; styles slender, short or elongate ; oil-tubes 2 to several in the intervals and on the 

 commissure. [Greek meaning solid foot, in reference to the compact structure of the 

 umbel.] 



A genus of 3 species, native respectively to Alaska, Colorado and California. Type species, Cymopterus ? 

 nevadensis A. Gray. 



