234 Index to American botanical literature 



Standley, P. C. Notes on the flora of the Pecos River National Forest. 

 Muhlenbergia 5 : 17-30. 27 F 1909. 



Includes Erigeron pecosensis sp. nov, 



Stewart, F. C, & French, G. T. The perennation of the clover 



dodder, Cuscuta Epithyjnum Murr. Torreya 9 : 28-30- 26 F igog, 



Sumstine, D, R. Mucor cultures. Science 11. 29 : 267. 12 F 1909. 

 Thellung, A. Neue Lepidtum-Y orm^n. Bull. Herb. Boiss. 11. 8 : 



9i3> 9M- 5 Ja '^9^9' 



Includes two new varieties from Chile. 



Thomson, R. B, On the pollen oi Mtcrocachrystet7'agona. Bot. Gaz. 

 47'. 26-29. P^* ^3 ^' 29 Ja 1909. 



Thornber, J. J. Relation of plant growth and vegetation forms to 

 climatic conditions. Plant World 12 : 1-7. Ja 1909. 



Trelease, W. Darwin as a naturalist : Darwin's work on cross pollina- 

 tion in plants. Am, Nat. 43 : 131-142. Mr 1909, 



Vries, H. de. On triple hybrids. Bot. Gaz. 47: 1-8. 29 Ja 1909. 

 Weingart, W. Cereus avibiguus P. DC, Monats. Kakteenk. 19 : 6, 

 9-^2. 15 Ja 1909. 



Weingart, W. Cereus Guelichii Speg, Monats. Kakteenk. 19 : 17- 

 22, 15 F 1909. [Illust.] 



Native of Paraguay. 



Weingart, W. Wasserspeicher am Stammedes Cereus anibiguus P. DC. 



Monats. Kakteenk. 19: 14, 15. 15 Ja 1909. 

 West, G. S. The '^red snow" plant {Sphaerella nivalis). Jour. 



Roy. Micr. Soc. 1909: 28-30. F 1909. 



Whyte, R. B. Dr. Fletcher as a botanist. Ottawa Nat. 22: 206, 

 207. 12 Ja 1909. 



Wilson, P. Notes on Rutaceae — W, Torreya 9: 32, 33. 26 F 

 1909, 



Includes XantJioxylum jamaicense sp. nov. and two new combinations. 



Winslow, C.-E. A. A statistical criterion for species and genera among 

 the bacteria. Bull. Torrey Club 36 : 31-39, 29 Ja 1909. 



Winslow, E. J. Polyslichum acrostichoides var. incisiim interpreted. 

 Fern Bull. 15: loi. [Ja] igog. 



Wooton 



tnon. 



Some hitherto undescribed plants 

 from New Mexico. Bull. Torrey Club 36: 105-112. 4 Mr 1909. 



Includes new species in Dilaxis, Sphaerakea (7), Sicyas, Phacelia, and Pentsie^ 



