Jones: Flora of Illinois 293 



U. S. Nat. Herb. 12:303-390. 1909; AUioniaccae [N^claginaccae]. N. Am. Fl. 21: 

 171-254. 1918; Studies of American Plants: N\]cla§inaceae, Field Mus. Nat. Hist. Publ. 

 Bot. 8:304-310. 1931. 



N^mphaeaceae 

 CoNARD, H. S., The walerlilies: a monograph of the genus Nvmphaea, i-xiii. 1-279. 

 Washington, 1905. — MiLLER, G. S., & P. C. Standley, The N. Am. species of 

 Nxtmphaea, [i.e.. Nuphar]. Contr. U. S. Nat. Herb. 16:63-108. 1912. 



Oleaceae 

 LiNGELSHEIM, A., Fraxincae. Das Pflanzenr. IV. 243:1-66. 1920. 



Onagraceae 



Fernald, M. L. — The identities of EpHobium Uneare, E. deiuum, and E. ciliatum. 

 Rhodora 46:377-386. 1944. — MUNZ, P. A., Studies in the Onagraceae IX, The subgen. 

 Ralmanma, Am. Jour. Bot. 22:645-663. 1935; Part X, The subgen. Kneiffia, Bull. 

 Torr. Bot. Club. 64:287-306. 1937; Part XI, A revision of the genus Caura, loc. cil. 

 65:105-211. 1938; Part XIII, The Am. species of Ludmgta, loc. cit. 71:151-166. 

 1944. — Trelease, W., The species of Epilohium occurring n. of Mexico, Ann. Rept. 

 Missouri Bot. Card. 2:69-117. 1891. 



Orchidaceae 



Ames, O., The genus Habenaria in N. Am., Orchidaceae, fasc. 4, 1910; An enu- 

 meration of the orchids of the U. S. and Canada, i-viii, 1-120. Boston, 1924. — 

 Rydberg, p. a.. The Am. species of Limnorchis and Piperia n. of Mexico, Bull. 



Torr. Bot. Club 28:605-643. 1901. 



Orobanchaceae 

 AcHEY, Daisy M., A revision of the sect. Cvmnocaidis of the genus Orobanche, 

 Bull. Torr. Bot. Club 60:441-451. 1933.— Beck-.Mannagetta, C, Orobanchaceae. 

 Das Pflanzenr. IV. 261:1-348. 1930 —MuNZ, P. A., The N. Am. species of Oro- 

 banche. sect. M\}zorrhizo, Bull. Torr. Bot. Club 57:611-624. 1931. 



Oxalidaceae 

 Knuth, R., Oxalidaceae. Das Pflanzenr. IV. 130:1-481. 1930; also m Engler & 

 Prantl, Die Nat. Pflanzenf. ed. 2. 19a:ll-42. 1931.— Small, J. K., Oxalidaceae. N. 

 Am. Fl. 25:25-58. 1907. — Wiegand, K. M., Oxalis comiculala and its relatives in N. 

 Am., Rhodora 27:113-124, 133-139. 1925. 



Papaveraceae 

 Fedde, F., Papaveraceae. Das Pflanzenr. IV. 104:1-430. 1909; also in Engler & 

 Prantl, Die Nat. Pflanzenf. 2 ed. 17b:5-145. 1936.— HuTCHlNSON, J., Key to Papa- 

 veraceae. Kew Bull. Misc. Inf. 1925:161-168. 1925. 



Parnassiaceae 

 Pace, Lula, Pamassia and seme allied genera. Bot. Gaz. 54:306-329. 1912. — 

 Rydberg, P. A., Parnassiaceae, N. Am. Fl. 22:77-80. 1905. 



Passifloraceae 

 KiLLiP, E. P., The Am. specie? of Passifloraceae. Field Mus. Nat. Hist. Publ. Bot. 

 19:1-331; 335-613. 1938. 



Phvtolaccaceae 

 Heimerl, a., Phvtolaccaceae in Engler & Prantl, Die Nat. Pflanzenf. 2 ed. 

 16c:135-164. 1934.— Walter, H., Phvtolaccaceae, Das Pflanzenr. IV. 83:1-154. 

 1909.— Wilson. P.. Petiveriaceae [incl. Phytolacca]. N. Am. Fl. 21:257-266. 1932. 



Pinaceae 

 Pilger, R., in Engler & Prantl, Die Nat. Pflanzenf. 2 ed. 13:271-342. 1926. 



Plantaginaceae 

 Pilger, R., Plantaginaceae. Das Pflanzenr. IV. 269:1-466. 1937. 



Plalanaceae 

 Glf.ASON, H. a., Plalanaceae. N. Am. Fl. 22:227-229. I9C8. 



