'<)14 Index to American botanical literature 



Parish, S. B. A bibliography of the southern Californian flora. Bull. 



South. Cal. Acad. Sci. 8: 71-75. Jl 1909. 

 Pettis, C. R, The white pine blister rust. Forestry Quart. 7 : 231- 



237. S 1909. 

 Phillips, F. J. A study of pifion pine. Bot. Gaz. 48: 216-223. 



» ■ 



18 S 1909. 



Plitt, C. C, Asexual reproduction of Leucobryum glaucum. Bry- 

 ologist 12; 79-Si. pL 10, S 1909. 



Pond, R* H. The morphology of Rnppia maritima — a criticism. 

 Bot. Gaz. 48: 228, 229. 18 S 1909. 



Poyser, W. A. The fern flora of Pennsylvania. Fern Bull. 17 : 65- 

 83. [S] 1909. 



Quehl, L. Uber Axillenwolle der Mamillarien. Monats. Kakteenk. 



* r 



19: 127. 15 Au 1909. 



Rolfe, R. A. Cycfioches densiflorum. Curt. Bot. Mag. IV. 5. //. 8268. 

 Au 1909. 



Saxton, W. T* Preliminary account of the ovule, gametophytes, and 

 embryo of Widdringtonia cupressoides. Bot, Gaz. 48; 161-178- 

 //. // +/ 7-j. 18 S 1909. 



Schaffner, J. H. Six hundred plants of general distribution in Ohio. 

 Proc. Ohio Acad. Sci. 5: 254-261. 10 S 1909. 



Servettaz, C. Monographic des Eleagnacees. Beih. Bot. Centr. 25 : 

 1-128. /. 7-/5. 3 Au 1909. 



Shaw, C. H. The causes of timber line on mountains ; the role of 

 snow. Plant World 12: 169-181. / 1-4. [S] 1909. 



Smith, A. M. Leo Lesquereux 1806-1889. Bryologist 12: 75-78. 

 //. p. S 1909. 



Spalding, V. M. Problems of local distribution in arid regions, 



[Present problems in plant ecology. IV.] Am. Nat, 43 : 472- 

 4S6. Au 1909. 



Spaulding, P. PeriJermmm Strobi Klebahn in America. Science 

 11. 30 : 200, 201. 13 Au 1909. 



Standley, P. C. More southwestern Castillejas. Muhlenbergia 5: 

 81-87. 7 Jl 1909- ^ 



Includes 5 new species. 



Standley, P. C. New combinations. Muhlenbergia 5 : 104. 5 Au 

 1909. 



Stapf , 0. Aphelandra tetragofm. Curt. Bot, Tvlag. IV, 5 : i>L 8272. 



S 1909. 



