296 American Midland Naturalist Monograph No. 2 



phulariaceae of eastern temperate N. Am., Acad. Nat. Sci. Philadelphia, Monograph 

 1:1-650. 1935. 



Simarubaceae 

 Engler, a., Simarubaceae. in Engler & Prantl, Die Nat. Pflanzenf. 19:359-405. 

 1931.— Small, J. K., Simarubaceae, N. Am. Fl. 25:227-239. 1911. 



Solanaceae 



Hitchcock., C. Leo, A monographic study of the genus Lvcium of the western 



hemisphere, Ann. Missouri Bot. Card. 19:179-374. 1932.— RvDBERG, P. A., The N. 



Am. species of Ph\3salis and related genera, Mem. Torr. Bot. Club 4:297-374. 1896. 



— Safford, W. E., Synopsis of the genus Datura, Jour. Washmgton Acad. Sci. 11: 



173-189. 1921. 



Spargantaceae 

 Fernald, M. L., Notes on Sparganium, Rhodora 24:26-34. 1922. — Graebner, P., 

 Sparganiaceae, Das Pflanzenr. IV. 10:1-26. 1900. — Rydberg, P. A., Spargartiaceae, 

 N. Am. Fl. 17:5-10. 1909. 



Staphyleaceae 

 Krause, J., Siaphvleaceae in Engler & Prantl, Die Nat. Pflanzenf. 2 ed. 20b: 

 255-321. 1942. 



Slhracaceae 

 Perkins, J., Slvracaceae, Das Pflanzenr. IV. 241:1-111. 1907. 



Taxaceae 

 PlLGER, R.. Taxaceae, Das Pflanzenr. IV. 5:1-24. 1903; Taxaceae in Engler & 

 Prantl, Die Nat. Pflanzenf. 2 ed. 13:199-211. 1926. 



TaxoJiaceae 

 PiLGER. R., TaxoJiaceae in Engler & Prantl, Die Nat. Pflanzenf. 2 ed. 13:342-360. 

 1926. 



Tiliaceae 

 Bush, B. F., The glabrate species of Tilia. Bull. Torr. Bot. Club 54:231-248. 

 1927.— Sargent. C. S., Notes on N. Am. Tr-es, III. Tilia, Bot. Gaz. 66:421-438. 

 1918. 



T^^phaceae 

 Graebner. P.. T\)pbaceae, Das Pflanzenr. IV. 8:1-18. 1900.— Wilson. P. T\,pha- 

 ceae. N. Am. Fl. 17:3-4. 1909. 



Umbelliferae 

 Coulter, J. M., & J. N. Rose, Monograph of the N. Am. Umbelliferae. Contr. 

 U. S. Nat. Herb. 7:9-256. 1900; suppl., loc. cii. 12:441-451. 1909.— Mathias, Mil- 

 dred, & L. Constance, A synopsis of N. Am. species of Er\^ngium, Am. Midi. Nat. 

 25:361-387. 1941; A synopsis of the Am. species of Cicala. Madroiio 6:145-151. 

 |942._WoLFF. H.. Umbelliferae, Das Pflanzenr. IV. 228:1-214. 1910; 1-305. 1913; 



1-398. 1927. 



V alerianaceue 

 Dyal, Sarah C, Valeriancllu m N. Am., Rhodora 40:185-212; 465-467. 1938. 



Verbenaceae 



Perry, Lily M., A revision of the N. Am. species of Verbena, Ann. Missouri Rot. 

 Card. 20:239-362. 1933. 



Violaceae 



Baird, Viola B., Wild Violets of N. Am. 1-225. Univ. Calif. Press, Berkeley, 

 1942. — Brainerd, E., Violets of N. Am., Vermont Agr. Exp. Sta. Bull. 224:1-172. 

 1921. — Holm, Til, Comparative studies of N. Am. Violets, Beih. Bot. Centralb. 50: 

 135-182. 1932. — Morton, C. V., The genus Hvbanihus in continental N. Am., Contr. 

 U. S. Nat. Herb. 29:74-82. 1944.— ScHULZE, G. K., Morphologisch-systematische 

 Studien Liber die Gattung Hybantlws, Bot. Jahrb. 67:437-492. 1936. 



Viiaceae 

 Bailey, L. 1 1., The species of grapes peculiar to N. Am., Gentcs Herb. 3:151-244. 



1934. 



