Index to American botanical literature 65 



Pammel, L. H., Ball, C. R. & Scribner, F. L. The descriptive and 



geographical study of the grasses of Iowa, i-xiii. 1-436. /. /- 

 270+ pi. A. Des Moines, Iowa. "1904" [1905 !]. 



Grasses of Iowa, Part II. Iowa Geol. Surv. Supplementary Rep. 



Peckolt, TV Volksbenennungen der brasilianischen Pflanzen und Pro- 

 dukte derselben in brasilianischer (portugiesischer) und von der 

 Tupisprache adoptiren Namen. Pharm. Rev. 23: 369-375. D 

 1905. 



Peirce, G. J. & Randolph, F. A. Studies of irritability in algae. 

 Bot. Gaz. 40: 321-350. /. 1-27. 15 N 1905. 



Piper, C. V. Additions and corrections to the list of Mt. Rainier 

 plants. Mazama 2 : 270, 271. D 1905. 



Robinson, B. L. A new Ranunculus from northeastern America. 

 Rhodora 7: 219-222. 29 N 1905. 



R. Allenii sp. nov. 



Rogers, J. E. The tree book : a popular guide to a knowledge of the 

 trees of North America and to their uses and cultivation, i-xx- 

 1-589. New York, N 1905. [Illust.] 



Rydberg, P. A. Studies on the Rocky Mountain flora — XV. Bull. 

 Torrey Club 32: 597-610. 6 D 1905. 



Including various new combinations, and descriptions of new species in Deschampsia^ 

 Eatonia } Poa (9), Festuca (2) and Elymus (2). 



Sanford f S. N. F. Eclipta alba in Massachusetts. Rhodora 7 : 173, 

 174. 28 O 1905. 



Sargent, C. S. Recently recognized species of Crataegus in eastern 

 Canada and New England — VI. Rhodora 7: 174-185. 28 O 

 1905; 192-219. 29 N 1905. 



With descriptions of 34 new species. 



Sargent, F. L. Lichenology for beginners — IV. Bryologist 8 : 98- 

 106. 1 N 1905. 



Serviss, G. P. How Burbank produces new flowers and fruit. Cos- 

 mopolitan Magazine II : 163-170. D 1905. [Illust.] 



Serviss, G. P. Transforming the world of plants ; the wonder-work of 

 Luther Burbank, which shows how man can govern evolution. Cos- 

 mopolitan Magazine 11 : 63-70. N 1905. [Illust.] 



Setchell, W. A. Limu. Univ. Calif. Publ. Bot. 2: 91-113. 12 



Ap 1905. 



Setchell, W. A, Post-embryonal stages of the Laminariaceae* Univ. 

 . Calif. Publ. Bot. 2: 115-138. pi. 12-14. 22 Ap 1905. 



