456 references: botany 



Hitchcock, A. S. New or noteworthy grasses. Amer. Journ. Bot., 2: 299-310. 



June, 1915. (Includes descriptions of»7 new species in the genera Stipa, 



Danthonia, Campulosus, Gymnopogon, Eragrostis, and Agropyron. — 



W. R. M.) 

 Hitchcock, A. S. Note on a New Zealand grass. Proc. Biol. Soc. Washington, 



28 : 182. November 29, 1915. 

 Hitchcock, A. S., and Chase, Agnes. Tropical North American species of 



Panicum. Contr. U. S. Nat. Herb., 17: 459-539, figs. 11-149. July 24, 1915. 

 Johnson, D. S. The history of the discovery of sexuality in plants. Smithsonian 



Inst. Ann. Rept. 1914, pp. 383-406. 1915. 

 Johnson, D. S. Sexuality in plants. Journ. Heredity, 6: 3-16, figs. 1-10. Janu- 

 ary, 1915. 

 Mackenzie, K. K. Two new sedges from the southwestern United States. Smith- 

 sonian Misc. Coll., 65 7 : 1-3. April 9, 1915. (Describes as new: Carex wootoni 



and C. rusbyi.—W. R. M.) 

 Maxon, W. R. The North American species of Psilogramme. Bull. Torrey 



Club, 42 : 79-86. March 2, 1915. (Includes descriptions of the new species 



Psilogramme chiapensis, P. glaberrima, P. villosula. — W. R. M.) 

 Maxon, W. R. Notes on American ferns: IX. Amer. Fern Journ., 5: 1-4. 



March, 1915. 

 Maxon, W. R. Note upon Polypodium subtile and a related species. Amer. 



Fern Journ., 5: 50-52. May, 1915. (Proposes the new name Polypodium 



cretatum for a Jamaican species. — W. R. M. ) 

 Maxon, W. R. Notholaena aschenborniana and a, related new species. Amer. 



Fern Journ., 5: 4-7. March, 1915. (Describes as new Notholaena hyalina. 



— W. R. M.) 

 Maxon, W. R. Polypodium marginellum and its immediate allies. Bull. Torrey 



Club, 42 : 219-225. April, 1915. (Notes on the peculiar morphology of this 



group, with description of 2 new species: P. hessii and P. ebeninum. — 



W. R. M.) 

 Maxon, W. R. Report upon a collection of ferns from western South America. 



Smithsonian Misc. Coll., 65 8 : 1-12. May 3, 1915. (Includes descriptions of 



six new species in Polypodium, Cheilanthes, Notholaena, and Dryopteris. 



— W. R. M.) 

 Moore, A. H. Two Philadelphus combinations. Rhodora, 17: 121-123. June 



18, 1915. 

 Nash, G. V., and Hitchcock, A. S. Poaceae (Pars). North Amer. Fl., 17: 197- 



288. December 20, 1915. 

 Piper, C. V. Andropogon halepensis and Andropogon sorghum. Proc. Biol. 



Soc. Washington, 28: 25-44. March 12, 1915. 

 Pittier, H. On the characters and relationships of the genus Monopteryx Spruce. 



Bull. Torrey Club, 42: 623-627, figs. 1, 2. December 11, 1915. (Describes 



Monopteryx jahnii, sp. nov.— W. R. M.) 

 Rigg, G. B. The kelp beds of Puget Sound. U. S. Dept. Agr. Soils Rep. 100, pp. 



50-59, fig. 2. April 10, 1915. 

 Rigg, G. B. The kelp beds of western Alaska. IT. S. Dept. Agr. Soils Rep. 100, 



pp. 105-122. April 10, 1915. 



