212 Guayule. 



1906. Hill, T. G. On the seedling structure of certain Piperales. Ann. Bot. 20: 



161 to 175. April. 



1907. Holm, T. Rubiaceae : Anatomical studies of North American representatives 



of Cephalanthus, etc. Bot. Gaz. 43: 153 to 168. 

 1908. Medicinal Plants of North America, 22. Eupatorium perfoliatumL. 



Merck's Report 17: 326 to 328. 

 1909a. Medicinal Plants of North America, 30. Liriodendrontulipifera'L. 



Merck's Report 18: 198 to 201. 

 19096. Medicinal Plants of North America, 34. Cornus florida'L. Merck's 



Report 18: 318 to 320. Dec. 

 1910. Medicinal Plants of North America, 36. Aletris farinosa L. 



Merck's Report 19: 33 to 35. Feb. 

 1907. Holtermann, C. Der Einfluss des Klimas auf den Bau der Pflanzen- 



gewebe. Leipzig. 



1902. Jodin, H. Recherches anatomiques sur les Boragin^es. Ann. Sci. Nat. 



Bot. VIII. 17: 263 to 346. 



1903. Jumelle, H. Les plantes a caoutchouc et a gutta. Paris. 



1910a. Kirkwood, J. E. Propagation of guayule by seeds. Am. Rev. Trop. 



Agric. (Mexico) 1: 34-43- Feb.; 77 to 84. Mar.-Apr. 

 19106. The growth of guayule in relation to the soil. Am. Rev. Trop. 



Agric. 1: 142 to 159. May-June. 

 1910c. The life-history of Parthenium argentatum (guayule). Am. Rev. 



Trop. Agric. 1: 193 to 205. July. 



1907. Kupfer, E. Studies in plant regeneration. Mem. Torr. Club 12: 195 to 



241. June 10. 



1906. Livingston, B. E. Soil moisture and evaporation. Cam. Inst. Wash. 

 Pub. 52. 



1901. Lloyd, Francis E. Some points in the anatomy of Chrysoma pauci- 

 flosculosa. Bull. Torr. Club 28: 446 to 450. 



1905a. The artificial induction of leaf-formation in the ocotillo. Torreya 



5: 175 to 179. Oct. 27. 



19056. - Isolation and the origin of species. Science II. 22: 710 to 712. 

 Dec. 1905. 



1908a. The physiology of stomata. Cam. Inst. Wash. Pub. 82. 



19086. Some features of the anatomy of guayule (Parthenium argentatum 



Gray). Plant World 11: 172 to 179. Aug. 



1908c. Methods of vegetative reproduction in guayule and mariola. 



Plant World 11: 201 to 208. Sept. 



i9o8d. A perennial dodder. Plant World 11: 40 to 41. Feb. 



1909. The Mexican Guayule and its Product, pp. 126 to 141 of a volume 



entitled Lectures on India Rubber: Being the Official Account of the 

 Proceedings of the Conference held in Connection with the Inter- 

 national Rubber and Allied Trades Exhibition, London, September, 

 1908. Edited by D. Spence, Ph.D. London. 



1909a. Overlapping habitats. Plant World 12: 73 to 78. Apr. 



1910a. The guayule rubber situation. India Rubber World 41: 115 to 



118. Jan. 1. 



19106. The responses of the guayule, Parthenium argentatum, to irriga- 

 tion. (Abstract) Science II, 31: 434 to 435. March 18. 



1905. MacCallum, W. B. Regeneration in plants. Bot. Gaz. 40: 97 to 120. 



Aug. 16; 241 to 263. Oct. 18. 

 1910. MacDougal, D. T. The origin of desert floras. Cam. Inst. Wash. Pub. 1 13: 

 pp. 113 to 119. 



1908. Olsson-Seffer, P. Discussion (pp. 21, 22) in the Year-Book of the Rubber 



Planter's Association of Mexico, 1907-1908. Mexico City, Mexico. 



1907. Pearson, H. C. A journey through guayule land. India Rubber World 



35: 173 to 177, Mar. 1; 205 to 210, Apr. 1. 



1906. Plowman, Amon B. The comparative anatomy and phylogeny of the 



Cyperaceae. Ann. Bot. 20: 1 to 33. Jan. 

 1899. Ram ale y, F. Comparative anatomy of hypocotyl and epicotyl in woody 



plants. Minn. Bot. Studies 2: 87 to 136. Feb. 22. 

 1910. Renner, O. Beitrage zur Physik der Transpiration. Flora 100: 451 to 547. 



1908. Ross, H. Der anatomische Bau der mexicanischen Kautschukpflanze 



"Guayule," Parthenium argentatum Gray. Ber. d. D. Bot. Gesellsch. 

 26: 248 to 263. Apr. 23. Contains several pertinent anatomical ref- 

 erences. A brief digest in English by A. D. Diisseldorf appeared 

 in the India Rubber World 40: 365, Aug. 1, 1908, under the title, 

 "The anatomical structure of guayule." 



