616 



UMBELLIFERAE 



Shady plact's, usually ainoiij^fst rocks, in the hills, 50 to 2500 feet: Coast Ranges 

 from Sonoma and Contra Costa Cos. to San Luis Obispo Co.; Sierra Nevada from 

 Amador Co. to Tulare Co.; coastal Southern California. East to Texas, south to 

 Mexico. Peru. Mar.-Apr. 



Locs. — Sierra Nevada: Drytowii, Amador Co. (Contrib. U. S. Nat. Herb. 7:31); bctw. 

 Mokeluiiine Ilill and San Andreas, F. E. BUiisdcll ; Mariposa Co. foothills (Zoe 3:29) ; Kaweah, 

 Eoppiup 544. Tehacliapi Mts.: Calicnte (Contrib. U. S. Nat. Herb. 7:31). Coast Ranges: 

 Humboldt Co. (Contrib. U. S. Nat. Herb. 7:31); Petaluma, Bolandcr 4633; North Berkeley 

 Hills, Chandler; Mt. Piablo, Jepson 9867a; San Leandro Creek, Alameda Co., Kellogg; Potrero 

 Hills, San Francisco, Kellogg ; La Honda, San Mateo Co., C. F. Baker 510; Pacific Grove, Heller 

 6498 ; Paso Robles, Gondii ; Cayucos, San Luis Obispo 

 Co., R. S. Ferris 7677. S. Cal.: Mission La Purisima, 

 Santa Barbara Co., Jepson 11,936; Ojai Valley, 

 Hubby; Santa Paula, Benj. Cobb; Tuna Canon, Ver- 

 dugo Hills, MacFadden; Playa del Rey, Los Angeles 

 Co., Braunton 827; San Bernardino, Parish; Ana- 

 heim, Alice King; Escondido, C. V. Meyer 96; Witch 

 Creek, Aldcrson. 



Refs.— BOWLESIA LOBATA R. & P. Fl. Peruv. 3 :28 

 (1802), typo from Peru; Jepson, Fl. W. Mid. Cal. 

 342 (1901), ed. 2, 287 (1911), Man. 705 (1925). B. 

 septenlrionalis C. & R. Contrib. U. S. Nat. Herb. 7:31, 

 fig.3 (1900), type Ice. near Tucson, Ariz., Myrtle Zuch. 



3. CONIUM L. 



Tall branching biennial with dissected de- 

 compound leaves. Flowers white, in com- 

 pound umbels. Involucre and involucels 

 small. Calyx teeth obsolete. Fruit broadly 

 ovate, somewhat laterally flattened. Ribs 

 prominent. Oil-tubes none. — Species 2, Eu- 

 rope, Asia and Africa. (Koneion, Greek name 

 of the Hemlock.) 



1. C. maculatum L. Poison Hemlock. 

 Tall (4 to 10 feet high), the stem dotted with 

 purple marks; herbage with a mouse-like odor; 

 leaves 1 to 2 feet long or more, the segments incised or pinnatifid; rays 10 to 16, 

 % to 11/4 inches long; bractlets ovate-lanceolate, commonly 3; fruit 1% lines long, 

 shorter than the pedicels. 



European weed, widely naturalized in shady or low moist ground, 1 to 5000 

 feet : throughout California but mostly cismontane. May-Sept. 



Note on introduction. — The date of introduction of Conium maculatum is not known to us. 

 It was observed prior to 1876, but was unknown to H. N. Bolander in the San Francisco Bay 

 region in 1870. In 1891 E. L. Greene records it as "rather rare in California" (Fl. Fr. 319). In 

 recent years, from about 1917 to 1927, it has spread widely and conspicuously along creek banks 

 and stream benches and often forms extensive thickets in moist bottoms. AU parts of the plant 

 are poisonous, but the root when eaten is more likely to prove fatal. 



Locs. — San Andreas, Jepson in 1923; Truckee, Sonne in 1892; Yreka, Butler 924 in 1909; 

 Falks Mill, South Fork Elk River, Tracy 4496 in 1914; Greenwood, Mendocino Co., Jepson in 

 1902 ; Drakes Bay, Jepson in 1900 ; Mormon Isl., T. Brandegee in 1884 ; Lake Merced, San Fran- 

 cisco, Eastwood in 1895; Alviso, Jepson 9318 in 1921; Carmel, Newlon 120 in 1921; San Luis 

 Obispo, Jepson in 1927; Arroyo Grande, Alice King; Lytle Creek, e. San Gabriel Mts., Feirson 

 2115 in 1920; San Bernardino, Parish 12,001 in 1918. 



Refs. — Conium maculatujj: L. Sp. PI, 243 (1753), type European; Jepson, Fl. W. Mid. Cal. 

 349 (1901), ed. 2, 294 (1911), Man. 706, fig. 686 (1925). 



Fig. 267. 

 a, habit, X 



a b 



BOWLESIA LOBATA E. & P. 



% ; b, leaf, X 1 ; c, carpel, 



X 7 ; d, cross sect, of carpel, X 10. 



4. CORIANDRUM L. 



Slender glabrous strong-smelling annual with leafy stems. Leaves markedly 

 dimorphic, the lower pinnate or bipinnate with broad leaflets, the upper finely dis- 



