INDEX TO AMERICAN BOTANICAL LITERATURE 367 
Nash, G. V. Benthamia japonica. Addisonia 2: 5, 6. pl. 43. 31 Mr 
1917. 
Nash, G. V. Gongora truncata alba. Addisonia 2: I1, 12. pl. 46. 
31 Mr 1917. 
Nash, G. V. Hardy woody plants in the New York Botanical Garden. 
Jour. N. Y. Bot. Gard. 18: 65-68. Mr 1917. 
Newman, L. E. The blister rust of white pine. Biltmorean 4: I-9. 
f. 1-6. 
Noriega, J. M. Les plantas mexicanas. Bol. Dir. Estud. Biol. 1: 
641-683. f. 1-15. S 1916. 
Orton, C. R. Diseases of the apple, pear and quince. Proc. Penn- 
sylvania State Hort. Assoc. 1916: 45-52: f. 1-7. 1916. 
Orton, C. R. Diseases of the brambles and methods of controlling 
them. Proc. Pennsylvania State Hort. Assoc. 1916: 66-71. fi 7. 
1916. 
Osterhout, W. J. V. Does the temperature coefficient of permeability 
indicate that it is chemical in nature? Bot. Gaz. 63: 317-320. 
16 Ap 1917. 
Pember, F.R. Studies by means of both pot and solution culture of the 
phosphorus and potassium requirements of the barley plant during 
its different periods of growth. Rhode Island Agr. Col. Exp. Sta. 
Bull. 169: 1-50. pl. 1, 2 +f. 1-3- Ja 1917. 
Pickett, F. L. Is Pellaea glabella Mett. a distinct species. Am. Fern 
Jour. 7: 3-5. Mr 1917. 
Praeger, R. L. Some new species of Sedum. Jour. Bot. 55: 38-44- 
F 1917. 
Includes Sedum griseum and S. amecamecanum from America. 
Pring, G. H. Hybrid Nymphaeas. Ann. Missouri Bot. Gard. 4 
1-14. pl. I-3 +f. 1-5. F 1917. : 
Rankin, W.H. White pine blister rust. Tree Talk 4: 77, 78. Fig. 17. 
Reed, E. L. Leaf nectaries of Gossypium. Bot. Gaz. 63: 229-231. 
pl. 12,13 +f. 2. 15 Mr 1917. 
Ridlon, H.C. Onoclea sensibilis forma obtusilobata. Am. Fern Jour. 7: 
6.. F 1917. 
Notes and illustrations by C. A. Weatherly follow on pages 6-9. 
Rojas Acosta, N. Addenda ad floram Chaco Australis (1909). Bull. 
Géog. Bot. 23: 211-219. 1914. 
New species in T: rophisomia (1), Maclura (1), Aristolochia (1), Labatia (3), 
Basanacantha (1), Begonia (1), Myrcialencus (1), Platorheedia (1). 
