INDEX TO AMERICAN BOTANICAL LITERATURE 27 
Nash, G. V. Acacia pubescens. Addisonia 6: 3, 4. pl. 194. 29 Je 
1921. 
Nash, G. V. Acacia pulchella. Addisonia 6: 5. pl. 195. 29 Je 1921. 
Nash, G. V. Acacia scapuliformis. Addisonia 6: 1, 2. pl. 193. 29 Je 
1921. ‘ 
Nelson, E. W. Lower California and its natural resources. Mem. 
Nat. Acad. Sci. 161: 1-171. pl. 1-35. 1921. 
Neville, H.O. Pineapples in Cuba. Cuba Rev. 19: 13-28. Jl 1921. 
[Illust.] 
Osterhout, W. J. V., Thaxter, R., & Fernald, M. L. Lincoln Ware 
Riddle. Science II. 54: 9. 1 Jl 1921. 
Parish, S.B. A reminiscence of roses. Am. Bot. 27: 60,61. My 1921. 
Patouillard, N. Clathrotrichum, nouveau genre d’hyphomycétes. Bull. 
Soc. Mycol. France 37: 33-35. .15 Ap 1921. 
Parasitic on Setaria in Ecuador. 
Pittier, H. Acerca del genero Gyranthera Pittier. Bol. Com. e Indust. 
[Venezuela] 13: 42 — Ja 1921. 
Includes G. caribensis sp. n 
Pittier, H. Arboles y ee nuevos de Venezuela—I. Bol. Com. e 
Indust. [Venezuela] 13: 417-428. Ja 1921 
Includes new species in Inga (1), Raputia (1), Esenbeckia (1), Trichilia (1), 
Stillingia (1), Gustavia (1), Mouriria (1), Oxythece (1), Pouteria (1), and Sider- 
xylum (1). 
Rapp, C. W. Bacterial blight of beans. Oklahoma Agr. Exp. Sta. 
Bull. 131: 1-39. f. 1-17. Jl 1920. 
Reinking, O. A. Citrus diseases of the Philippines, southern China, 
Indo-China, and Siam. Philipp. Agric. 9: 121-179. pl. 1-14. F 
1921. 
Reinking, O. A. Diseases of economic plants in Indo-China and Siam. 
Philipp. Agric. 9: 181-183. F 192. 
Rolfe, R. A. Wercklea lutea [Malvaceae]. Kew Bull. Misc. Inform. 
1921: 118, 119. 1921. ; 
New species from Costa Rica. 
Rydberg, P. A. Two new species from Arizona. Am. Bot. 27: 61-63. 
My 1921. 
Eriogonum Clutei Rydb. and Forestiera arizonica (A. Gray) Rydb. 
Sands, W.N. Plants common to the West Indies and Malaya. Agric. 
News 20: 163; 182, 183. 28 My 1921. 
