203. Camp, W. H. "Aphyllous forms of Pyrola. " Bull. Torr. Club 67: 453-65. 1940. 



204. Copeland, H. F. "Observations on the structure and classification of the Pyroleae." Madrono 9: 65-102. 

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205. Eastwood, Alice. "A revision of Arctostaphylos . " Leafl. West. Botan. 1: 105-127. 1934. 



206. Hitchcock, C. L. "The Ledum glaiidulosum complex." Leafl. West. Botan. 8: 1-8. 1956. 



207. Camp, W. H. "A survey of the American species of Vaccinium, subgenus Euvaccinium . " Brittonia 4: 

 205-47. 1942. 



208. Robbins, G. Thomas. "North American species of Androsace. " Amer. Midi. Natur. 32: 137-163. 1944. 



209. Williams, L. O. "Revision of the western Primulas . " Amer. Midi. Natur. 17:741-48. 1936. 



210. Card, Hamilton H. "A revision of the genus Frasera ." Ann. Mo. Botan. Gard. 18: 245-82. 1931. 



211. St. John, Harold. "Revision of the genus Swertia (Gentianaceae) of the Americas and the reduction of 

 Frasera ." Amer. Midi. Natur. 26: 1-29. 1941. 



212. Gillett, J. M. "A revision of the North American species of Gentianella Moench." Ann. Mo. Botan. 

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213. Woodson, R. "Monograph of the genus Amsonia. " Ann. Mo. Botan. Gard. 15:379-434. 1928. 



214. Woodson, R. E. "Studies in the Apocynaceae I." Ann. Mo. Botan. Gard. 17: 1-212. 1930. 



215. Woodson, R. R., Jr. "The North American Asclepiadaceae I. Perspective of the genera. Ann. Mo. 

 Botan. Gard. 28: 193-244. 1941. 



216. Woodson, R. E. , Jr. "The North American species of Asclepias . " Ann. Mo. Botan. Gard. 41: 1-211. 

 1954. 



217. Yuncker, T. G. "The genus Cuscuta ." Mem. Torr. Botan. Club 18: 113-331. 1932. 



218. Yuncker, T. G. "Cuscuta of Nevada. " Contrib. toward a flora of Nevada 34: 1 - 1 1 . 1954. 



219. Brand, A. "Polemoniaceae. " Pflanzenr. IV. 250(Heft 27). 1907. 



220. Grant, V. Natural history of the Phlox family, vol. I systematic botany. Martinus Nijhoff, The Hague, 

 1959. 



221. Wherry, E. T. "Polemoniaceae of Nevada" with Ipomopsis and Gilia section Arachnion contributed by 

 V. and A. Grant. Contrib. toward a flora of Nevada 43: 1-103. 1957. 



222. Wherry, E. T. "Review of the genera Collomia and Gymnosteris . " Amer. Midi. Natur. 31: 216-231. 

 1944. 



223. Mason, H. L. "The genus Eriastrum and the influence of Bentham and Gray upon the problem of generic 

 confusion in Polemoniaceae. " Madrono 8: 65-91 . 1945. 



224. Constance, L. , and Reed Rollins. "A revision of Gilia congesta and its allies." Amer. J. Botan. 23: 

 433-40. 1936. 



225. Wherry, E. T. "The Gilia aggregata group." Bull. Torr. Club 73: 194-202. 1946. 



226. Grant, V. (or in collaboration with A. Grant). "Genetic and taxonomic studies in Gilia." A series of 

 10 papers in El Aliso, vols. 2 and 3. 1950-1956. 



227. Grant, V. "A synopsis of Ipomopsis . " El Aliso 3: 351 -362. 1956. 



228. Grant, Alva, and V. Grant. "The genus Allophyllum (Polemoniaceae)." El Aliso 3: 93- 1 10 . 1955. 



229. Crampton, B. "Morphological and ecological considerations in the classification of Navarretia." 

 Madrono 12: 225-238. 1954. 



230. Wherry, E. T. The genus Phlox . Morris Arboretum Monogr. Ill, 174 pp. 1955. 



231. Davidson, J. F. "The genus Polemonium. " Univ. Calif. Pub. Botan. 23: 209-82. 1950. (19 species 

 recognized.) 



232. Wherry, E. T. "The genus Polemonium in North America." Amer. Midi. Natur. 27:741-60. 1942. 

 (42 species recognized.) 



233. Brand, A. "Hydrophyllaceae. " Pflanzens. LV. 251 (Heft 59). 1913. 



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