2J: Bulletin of the Univei'sity of Texas 



S6. Norton, J. B. S. (1902). 



Notes on some plants of the soutlnvestem United States. 

 Trans. St. Louis Acad. Sc. 12:35-41. 



Describes six new species from Texas. A map showing 

 extent of botanical explorations in the United States. 



87. Pammel, L. H. (1894). 



Notes on the flora of Texas. 

 Ames, Iowa, 15 pp. 



88. Parry, C. C. (1859). 



Introduction (to botany of the ^lexican Boundary). 



U. S.'Mex. Bound. Surv. 2:9-26. Washington. 



Deals with the botanical features of the reirion and its 



agricultural capacities. 



89. Phippen, G. D. (1878). 



Impressions of the flora of Texas, Avith collections of Les- 

 ter F. Ward. 



Bull Essex. Inst. 10-:86-93. Salom, Mass. 



90. Pittuck, B. C. (1898). . 



Grasses and Forage Plants. 



Bull. 46. Tex. Exp. Sta. pp. 1009-1030. 



An account of experiments with 43 grasses. 



91. Roemer, Ferd. (1849). 



Texas. With especial reference to German emigration 

 snd the Physical Condition of the country, from personal 

 ol)servations made by the author. 

 Bonn. pp. xir, 464. 



Appendix on natural historj and a topographical and 

 geological map of Texas. List of plants collected in 

 Texas, and numerous comments on the flora of Texas. 



92. Ross, H. (1908). 



Der Anatomische Bau der mexicanisdieu Kautschuk- 



li 



pflanze. 



Guayule," Parthcnium arjxentatum Gray 



Ber. d. D. Bot. GcseUsch. 26:248-263. 



93. Sai-ont, C. S. (1888). 



Report on the forests of Xortli America (exclusive of 

 Mexico). 



Tenth Census Ficp. 9:540-543. 



94. Seheele, A. (1849). 



A description of plants bron<>lit from Texas by Ferd 

 TJoemer. 



Roemer's "Texas." pp. 425-449. 



A list of 301 species, with a briof discussion of the di- 

 versified character of the Texas flora. 



