698 Index to Recent Literature 



t 



Pammel, L. H. The weedy Plants of Iowa. Proc. Soc. Prom. 



Agric. Sci. 21 : — (1-5)- 1900. 



Parish, S. B. A Group of Western American Solanums. Proc. Cal. 

 . Acad. Sci. (Botany) III. 2: 159-172. 23 O. 1901. 



Nine species and varieties enumerated, five of them new. 



Pieters, A. J. The Plants of Western Lake Erie with Observations 

 on their Distribution. Bull. U. S. Fish Comm. 1901 : 57~79- P l - 

 11—20. 1 90 1. 



Price, 0. W. Practical Forestry in the Southern Appalachians. Year- 

 Book U. S. Dept. Agric. 1900: 357-368. pl. 38-43. 1901. 



Ramirez, J. El Pileus heptaphyllus.—Rwwo genero de las Papayaceas. 

 An. Inst. Med. Nacional, 5: 24-29. //. 1-4. 1901. 



Rendle, A. B. Notes on Trillium. Jour. Bot. 39 : 321-335. //. 426* 

 Ay B. 1 O. 1901. 



Includes descriptions of T. Rttgelii sp. nov. from North Carolina and T. ajftne sp. 

 nov. from Georgia, and critical notes on various other American species. 



Robertson, C. Flower visits of oligotropic Bees. Bot. Gaz. 32 : 367, 

 368. 25 N. 1901. 



Robinson, B. L. Problems and Possibilities of Systematic Botany. 

 Science, II. 14: 465-474. 27 S. 1901. 



! Address of the retiring President of the Botanical Society of America, 28 Au. 1901. 

 Reprinted as Publication 15 of the Society. 



Robinson, B. L. The North American Euphrasias. Rhodora, 3: 2 7°" 

 276. N. 1901. 



E. Williamsiiy E. Randii, E. Randii Farlowi, and E. Americana Canadensis, 

 new species, variety and combination. 



Rusby, H. H. More concerning Truxillo Coca Leaves. Druggists 

 Circ. and Chem. Gaz. 1901. ? Mr. 1901. [Illust.] 



Rydberg, P. A. The American Species of Limnorchis and Piperia, 



north of Mexico. Bull. Torr. Club, 28 : 605-643. /. 1-34- 2 5 N - 

 1 90 1. 



Enumerates 32 species, with 22 new species, varieties and combinations. 



Salmon, E. G. Bryological Notes (15). Philocrya Hagen & Jensen. 

 Jour. Bot. 39: 339-341. 1 O. 1901. 



Transfers Oligotrichum Lescurii (James) Mitten to Lyellia and makes Philocrya 

 synonym of the latter. 



Schaffner, J. H. The maximum Height of Plants, III. Ohio Natu- 

 ralist, 2 : 142. N. 1 901. 



