26 INDEX TO AMERICAN BOTANICAL LITERATURE 
Kraemer, H. Plant colors. Am. Jour. Pharm. 93: 414-416. Je 1921. 
Kraemer, H. Some experiments on the modification of color in plants. 
Am. Jour. Pharm. 93: 416-418. Je 1921. 
Kunkel, L. O. A possible causative agent for the mosaic disease of 
corn. Bull. Exp. Sta. Hawaiian Sugar Pl. Assoc. 3: 1-15. pl. 4-15 
+ fe. Fy. Bex > Jt 19a: 
Lee, H. A. The relation of stocks to mottled leaf of Citrus trees. 
Philipp. Jour. Sci. 18: 85-93. pl. 1-3. Ja aig2t. 
Loesener, T . Plantae Selerianae—IX. Verh. Bot. Ver. Brandenburg 
58: 129-157. 1 My 1917. 
Includes new American species in Nemastylis (1), Iresine (1), Daphnopsis (1), 
and Aniseia (1). 
Lonay, H. Sur quélques genres rares ou critiques de Renonculacées. 
Bull. Soc. Bot. Belgique 45: 191-204. 4 D 1908. 
Long, W. H. Notes on new or rare species of rusts. Bot. Gaz. 72: 
39-44. 16 Jl 1921. 
Includes new species in Gymnosporangium (1), and Ravenelia (3). 
MacDougal, D. T. Water deficit and the action of vitaniines, amino- 
compounds, and salts on hydration. Am. Jour. Bot. 8: 296-302. 
30 Je 1921. 
Martin, W. H. Studies on tomato leaf-spot control. New Jersey 
Agr. Exp. Sta. Bull. 345: 1-42. pl. 1 +f. 1. N 1920. 
Maxon, W. R. A neglected fern paper. Proc. Biol. Soc. Washington 
34: Tlt-1i4."' 30 Je fozt. 
Refers to Watt’s Catalog of Ferns, published in Canadian Naturalist if, 33: 
157-160. : 
Merrill, E. D. New Philippine Moraceae. Philipp. Jour. Sci. 18: 
49-69. Ja 1921. 
Merrill, E. D. New Philippine Myrtaceae. Philipp. Jour. Sci. 18: 
289-308. Mr 1g2t. 
Mulford, F.L. Oaks for ornamental planting. Am. For. 27: 461-467- 
Jl 1921. [Illust.] 
Nash, G. V. Acacia armata. Addisonia 6: 13. pl. 199. 29 Je 1921. 
Nash, G. V. Acacia leprosa. Addisonia 6: 7. pl. 196. 29 Je 1921. 
Nash, G. V. Acacia lineata. Addisonia 6: 15. pl. 200. 29 Je 1921. 
Nash, G. V. Acacia longifolia floribunda. Addisonia 6: 11. pl. 198. 
29 Je 1921. 
Nash, G. V. Acacia Nabonnandi. Addisonia 6: 9. pl. 197. 29 Je 
1921. 
