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264. Epling, Carl. "Monograph of the genus Monardella . " Ann. Mo. Botan. Gard. 12: 1-106, 125. 



265. Epling, Carl. "The Californian Salvias . " Ann. Mo. Botan. Gard. 25: 95-188. 1938. 



266. Epling, Carl. "Notes on Scutellariae of west North America . " Madrono 5: 49-72. 1939. 



267. Epling, Carl. "The American species of Scutellaria. " Univ. Calif. Pub. Botan. 20: 1-146. 1942. 



268. McClintock, Elizabeth, and Carl Epling. "A revision of Teucrium in the New World." Brittonia 5: 491 - 

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269. Lewis, Harlan. "A revision of the genus Trichostema. " Brittonia 5: 276-303 . 1945. 



270. Safford, W. E. "Synopsis of the genus Datura ." J. Wash. Acad. Sci. 11:173-189. 1921. 



271. Hitchcock, C. L. "A monographic study of the genus Lycium of the Western Hemisphere." Ann. Mo. 

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272. Goodspeed, T. H. The genus Nicotiana. Chron. Botan. 16: 1-536. 1954. 



273. Stebbins, G. Ledyard, Jr., and Elton F. Paddock. "The Solanum nigrum complex in Pacific North 

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274. Edwin, G. "Scrophulariaceae of Nevada Part II, the genera except Mimulus and Penstemon." Contrib. 

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275. Pennell, F. W. "Scrophulariaceae of the central Rocky Mountain States . " U.S. Contrib. Nat. Herb. 20: 

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276. Pennell, F. W. "A revision of Synthyris and Besseya ." Acad. Nat. Sci. Phil. Proc . 85:77-106. 1933. 



277. Newsom, V. "A revision of the genus Collinsia ." Botan. Gaz . 87: 260-301 . 1929. 



278. Ferris, R. S. "Taxonomy and distribution of Adenostegia . " Bull. Torr. Botan. Club 45: 399-423. 1918. 



279. Grant, A. L. "A monograph of the genus Mimulus. " Ann. Mo. Botan. Gard. 11: 99-388. 1924. 



280. Edwin, G. "Scropulariaceae of Nevada. Parti. Mimulus." Contrib. toward flora of Nevada 37: 1-21. 

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281. Campell, G. R. " Mimulus guttatus and related species." El Aliso 2: 319-337 . 1950. 



282. Keck, D. D. "A revision of the genus Orthocarpus . " Calif . Acad. Sci . Proc . IV , 16: 517-571 . 1927. 



283. Keck, David D. Studies in Penstemon I --A systematic treatment of the section Saccanthera. Univ. Calif. 

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 790-829, 1937. VI- - "The section Aurator . " Bull. Torr. Botan. Club 65: 233-255, 1938. VII- -"The subsections 

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 nomic account of the section Spermunculus . " Amer. Midi. Natur. 33: 128-206, 1945. IX --Keck and A. J. Cron- 

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284. Shaw, R. J. "The biosystematica of Scrophularia in western North America." El Aliso 5: 147-178. 1962. 



285. Pennell, F. W. " Veronica in North and South America." Rhodora 23: 1 -22 , 29-41 . 1921. 



286. Fosberg, F. R. "Varieties of the desert willow, Chilopsis linearis . " Madrono 3: 362-366. 1936. 



287. Beck, G. "Orobanchaceae . " Das Pflanzenreich, IV, 261: 1-348. 1930. 



288. Achey, D. "A revision of the section Gymnocaulis of the genus Orobanche, section Myzorrhiza." Bull. 

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289. Munz, P. A. "The North American species of Orobanche, section Myzorrhiza." Bull. Torr. Botan. 

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290. Rossbach, C. B. "Aquatic Utricularias." Rhodora 41: 113-128. 1939. 



291. Pilger, R. "Plantaginaceae . " Das Pflanzenreich, IV, 269: 39-432. 1937. 



292. Wheeler, Louis C. "Notes on Plantago in the Pacific States." Amer . Midi. Natur . 20: 331 -333 . 1938. 



293. Dempster, L. T. "The re-evaluation of Galium multiflorum and related taxa." Brittonia 11: 105-122. 

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