290 American Midland Naturalist Monograph No. 2 



virginica in e. N. Am., Rhodora 29:193-204. 1927, also loc. cit. 39:14-16. 1937.— 

 Wheeler, L. C,, Euphorbia, subgenus Chamaesvce in Canada and the U. S., Rhodora 

 43:97.-154; 168-205; 223-286. 1941. 



Fagaceae 

 Dyal, Sarah C, A key to the species of oaks of eastern N. Am., Rhodora 38:53- 

 63. 1936. — Palmer, E. J., The red oak complex in the U. S., Am. Midi. Nat. 27: 

 732-740. 1942.— Trelease, W., The American oaks, Mem. Nat. Acad. Sci. 20:1- 

 255. 1924. 



Ceniianaceae 

 Card, H. H., A revision of the genus Frasera, Ann. Missouri Bot. Gard. 18:245- 

 282. 1931. — St. John, H., Revision of the genus Steeriia of the Americas and the 

 reduction of Frasera, Am. Midi. Nat. 26:1-29. 1941. 



Ceraniaceac 

 Fernald, M. L., Ceranium caroliniarmm and allies of northeastern N. Am., Rho- 

 dora 37:295-301. 1935.— Hanks, L. T., & J. K. Small, Ceraniaceae, N. Am. Fi. 

 25:1-24. 1907. — Jones, G. N., & F. F. Jones, A revision of the perennial species of 

 Ceranium of the United States and Canada, Rhodora 45:5-26; 32-53. 1943. — Knuth, 

 R., Ceraniaceae in Engler & Prantl, Die Nat. Pflanzenf., 2 ed. 19a:43-66. 1931. 



Cramineae 

 Fernald, M. L., Five common rhizomatous species of Muhlenbergia, Rhodora 45: 

 221-239. 1943.— Hitchcock, A. S.. Manual of the Grasses of the U. S., U. S. Depf. 

 Agr. Misc. Publ. 200:1-1040. 1935; Poaceae (Cramineae), N. Am. FI. 17:289-354. 



1931; 355-482,483-542. 1935; 543-638. 1939. 



Crossulariaceae 

 Berger, a., a taxonomic review of currants and gooseberries. New York Agric. 

 Exp. Sta. Tech. Bull. 109:1-118. 1924.— CoviLLE, F. V., & N. L. BritTON, Cros- 

 sulariaceae, N. Am. Fl. 22:193-225. 1908. 



Haloragidaceae 

 ScHlNDLER, A. K., Halorrhagaceae, Das Pflanzenr. IV. 225:1-133. 1905. 



H amamelidaceae 

 BritTON, N. L., H amamelidaceae, N. Am. Fl. 22:185-187. 1905.— Harms, H., 

 H amamelidaceae in Engler & Prantl, Die Nat. Pflanzenf. 2 ed. 18a:303-345. 1930.— 

 Wilson, P., Aliingiaceae, op. cit. 189. 1905. 



Hydrangeaceae 

 St. John, H., A critical revision of Hydrangea arborescens, Rhodora 23:203-208. 

 1922. — Rehder, a., Phdadelphus verrucosus spontaneous in Illinois, Jour. Arnold Arb. 

 2:153-156. 1921.— Small, J. K., & P. A. Rydberg, Hvdrangeaceae, N. Am. Fl. 

 22:159-178. 1905. 



Hydrochariiaceae 

 Marie-VictoriN, P"r., Anacharis canademis, Contr. Inst. Bot. Univ. Montreal 18: 

 1-43. 1931; Les Vallisneries Americaincs, loc, cit. 46:1-38. 1943. Rydberc, P. A., 

 Elodeaceae, N. Am. Fl. 17:67-71. 1909; Hydrocharilaceae. op. ciL 17:73-74. 1909. 

 —St. John, H., The genus Elodea in New Engl., Rhodora 22:17-29. 1920. 



H\)droph\illaceae 

 Brand, A., Hydroplndlaceae, Das Pflanzenr. IV. 251:1-210. 1913.— Chitten- 

 den, R. J., & W. B. TuRRiLL, Taxonomic and genetical notes on some species of 

 Nemophila, Kew Bull. Misc. Inf. 1926:1-12. 1926.- -CoN.'^TANCE, L., The genus N em- 

 ophila, Univ. Calif. Publ. Bot. 19:341-398. 1941; The genera of the tribe H\uJro- 

 phylleae, Madrom, 5:28-33. 1939; The genus Ellisia, Rhodora 42:33-39. 1940; The 

 genus Hydrophyllum, Am. Midi. Nat. 27:710-731. 1942. 



Hypericaceae 

 SVENSON, II. K., Woody Species of Hypericum. Rhodora 42:8-19. 1Q40. 



