(5i6) 



Plagiothecium, 137, 142, 375 



Plant Picture Collection, 276, 439 



Plantago, 182 



Plantations. Report of the Curator for 



1900, 51 

 Poa, 156 

 Podocarpus, 435 

 Podosporium, 350 

 Podozamiles, 401, 405 

 Pogonatum, 132, 370 

 Pohlia, 121-123, 364-366 

 Polemonium, 180 

 Polycodium, 179 

 Polygonella, 392, 395, 396 

 Polygonum, 166, 167, 394, 396 

 Polypodium, 148, 396 

 Polylrichum, 132, 147, 370 

 Populus, 163 

 Porotrichum, 137, 374 

 Potentilla, 173, 396 

 Po/Z/a, 113, 356 

 Power House, 8, 246, 417, 481 

 Preliminary List of Montana Mosses, 



351 



Preservation of Native Plants, 436 



Primula, 179 



Propagating Houses, 5, io, 247, 299, 418, 

 475- 48o 



Propagation of Lysimachia terreslris, 

 82 



Prosopis, 90, 101 



Provincetown, Mass. Geology, 386 ; 

 Botany, 389 



Prunus, 394-396 



Psathyrella, 344, 345 



Pseudoleskea, 134, 135, 372 



Psilopilum, 132 



Pteridium, 265, 394, 396 



Pteridophytes collected by R. S. Wil- 

 liams and J. B. Tarleton, 148 



Pterigynandrum, 133, 371 



Pterygoneurum, 356 



Ptilidium, 104 



Ptychomitrium, 361 



Public Comfort Station, 8, 247, 418 



Public!Lectures, 19, 261 



Publications, 20, 261, 428 



Puccinia, 349, 350 



Pucciniopsis, 340 



Pulsatilla, 169 



Pylaisia, 134, 372 



Pyrola, 178 



Quercus, 187-233, 264, 394, 396 



Racomitrium, 117, 118 



Ranunculus, 169, 170 



Report of the Committee on Patrons, 

 Fellows and Members, for 1900, 

 66; for 1901, 313; for 1902, 

 492 



Report of the Curator of the Economic 

 Collections, for 1900, 35 ; for 1901, 

 278 ; for 1902, 450 



Report of the Curator of the Museums 

 and Herbarium, for 1900, 25 ; for 

 1901, 268 ; for 1902, 438 



Report of the Curator of the Planta- 

 tions, for 1900, 51 



Report of the Director of the Labora- 

 tories, for 1900, 38 ; for 1901, 281 ; 

 for 1902, 452 



Report of the Head Gardener, for 1900, 

 57 ; for 1901, 295 ; for 1902, 472 



Report of the Librarian, for 1900, 42 ; for 

 1 901, 284 ; for 1902, 459 



Report of the Scientific Directors, for 

 1900, 64 ; for 1901, 310 ; for 1902, 

 490 



Report of the Secretary and Director-in- 

 Chief, for 1900, 1 ; for 1901, 235 ; 

 for 1902, 409 



Report of the Superintendent of Build- 

 ings and Grounds, for 1901, 303 ; 

 for 1902, 480 



Report of the Treasurer, for 1900, 79 ; 

 for 1901, 327 ; for 1902, 507 



Rhopographus, 350 



Rhus, 394, 396 



Rhytidhysterium, 345 



Rhytisma, 345 



Ribes, 107, 173 



Roads, 14, 252, 304, 422, 481 



Roripa, 171 



Rosa, 174, 394, 396 



Rubus, 174, 394, 396 



Rusby, H. H. Report of the Curator 

 of the Economic Collections, for 

 1900. 35; for I 9° I . 2 78; for 1902, 

 450 



Russula, 340, 341 



Rydberg, P. A. The Oaks of the Con- 

 tinental Divide North of Mexico, 

 187 



Rydberg, P. A., and Britton, N. L. An 

 Enumeration of the Flowering 

 Plants collected by R. S. William 

 and by J. B. Tarleton, 149 



