46o GYMNOSPERMS 



294. Jeffrey, E. C, On the structure of the leaf in cretaceous pines. Ann. 

 Hotany 22:207-20. pis. J j, 14. 1908. 



295. ■ — , Traumatic ray tracheids in Ciinninghamia sinensis. Ann. Botany 



22:593-602. pl. 31. 1908. 



296. , Are there foliar gaps in the Lycopsida? Bot. Gazette 46: 241-58. 



pis. 17, 18. 1908. 



297. , On the affinities of the genus Yezonia. Ann. Botany 24:767-73. 



pl. 65. 1 9 10. 



298. , A new araucarian genus from the Triassic. Proc. Boston Soc. 



Nat. Hist. 34:325-32. pis. 31,32. 1910. 



299. , A new Prcpiniis from Martha's Vineyard. Proc. Boston Soc. Nat. 



Hist. 34:333-38. pl- 33- 1910. 



300. , The history, comparative anatomy, and evolution of the Araii- 



carioxylon type. Proc. Amer. Acad. 48:531-71. pl. 7. 1912. 



301. , The anatomy of woody plants. University of Chicago Press. 



1917. 



302. Technical Contribution I. Improved method of softening hard tissues. 

 Bot. Gazette 86:456-57. 1928. 



303. , Resin canals in the evolution of the conifers. Proc. Nat. Acad. 



Sci. 11:101-5. 1925. 



304. Jeffrey, E. C, and Chrysler, M. A., On cretaceous Pityoxyla. Bot. 

 Gazette 42:1-15. pis. i, 2. 1906. 



305. , The microgametophyte of the Podocarpineae. Amer. Nat. 41: 



355-64. figs. 5. 1907. 



306. JuEL, H. O., Beitrage zur Kenntniss der Tetradenbildung. Jahrb. Wiss. 

 Bot. 35:626-59. pis. jj, 16. 1900. 



307. , Ueber den PoUenschlauch von Ciiprcssus. Plora 93:56-62. pl. 3. 



1904. 



308. JuRANYi, L., Bau und Entwickelung des Pollens bei Ceratozamia longi- 

 folia Miq. Jahrb. Wiss. Bot. 8:382-400. pis. 31-34. 1872. 



309. Karsten, G., Beitrage zur Entwickelungsgeschichte der Gattung Gnctum. 

 Bot. Zeit. 50:205-15, 221-31, 237-46. pis. 5, 6. 1892. 



310. , Zur Entwickelungsgeschichte der Gattung Gnetum. Cohn's Bcitr. 



Biol. Pflanz. 6:337-82. pis. S-ii. 1893. 



311. , Untersuchungen iiber die Gattung Gndum. Ann. Jard. Bot. Bui- 



tenzorg. 11:195-218. pis. 17-19. 1893. 



312. Kashyap, Abnormal sporophyll in the male cone of Cycas circindis. 

 Jour. Indian Bot. Soc. 4:312-14. 1924. 



313. Kerner VON Marilaun, Das Pflanzenleben. Leipzig & Vienna. 1896. 



314. Kershaw, E. M., Structure and development of the ovule of Boxvcnia 

 spectahilis. Ann. Botany 26:625-46. pl. 61. figs. 16. 191 2. 



315. KmsTON. R., On the fructifications of some ferns from the Carboniferous 

 formation. Trans. Roy. Soc. Edinburgh 33:137-56. ph. 8. figs. 7. 1887. 



