LACTUCA SATIVA 651 



LITERATURE CITED 



I. Bailey, L. H., The Standard Cyclopedia of Horticulture , The Macmillan Co., 1919. 

 X. DE Bary, a., Comparative Anatomy of the Vegetative Organs of the Phanerogams 

 and Ferns, Clarendon Press, Oxford, 1884. 



3. BoRTHwicK, H. A., and Robbins, W. W., "Lettuce seed and its germination." 



Hilgardia j: 2.75-304, 1918. 



4. DE Candolle, a.. Origin of Cultivated Plants, D. Appleton-Century Co., 1895. 



5. Carano, E., "Richerche sull' embriogenesie delle Asteracee." Ann. di Bot. 



13: 151-301, 191 5. 



6. Chauveaud, G., "L'appareil conducteur des plantes vasculaires, et les phases 



principales de son evolution." Ann. Sci. Nat., Bot. Ser. IX, i}: 113-438, 

 1911. 



7. CoMPTON, R. H., "An investigation of the seedling structure in the Legu- 



minosae." Jour. Linn. Soc. (London^ Bot. 41: i-iii, 1911. 



8. CuMMiNGs, M. B., "Large seed a factor in plant production." Vt. Agr. Exp. 



Sta. Bull, ijy, 1914. 



9. Eames, a. J., and MacDaniels, L. H., An Introduction to Plant Anatomy, 



McGraw-Hill Book Co., 192.5. 



10. Gates, R. R., and Rees, E. M., "A cytological study of pollen development 



in Lactuca." Ann. Bot. 5/.- 365-398, 192.1. 



11. Janczewski, E., "Recherches sur I'accroissement terminal des racines, dans 



les Phanerogames." Ann. Sci. Nat., Bot. Ser. V, 20: i6i-ioi, 1874. 

 IT.. Jean, M., "Essai sur I'anatomie comparee du liber interne dans quelques 

 families deDicotyledones: Etude des plantules." LeBot.ij: 115-364,1917. 



13. Jones, H. A., "Pollination and life history studies of lettuce (Lactuca sativa 



L.)." Hilgardia 2: 415-478, 1917. 



14. KoNEK), M., "Uber die in der Landwirtschaft Japans gebrauchten Samen, II." 



Ber. Ohara Inst, fiir landiv. Forsch. i: 433-440, 1919. 



15. Knuth, P., Handbook of Flower Pollination II, Clarendon Press, Oxford, 1908. 



16. Kruch, "Fasci midollari delle Cichoriaceae." Ann. R. 1st. bot. Kama. 4: 



fasc. I, 1890. 



17. Lee, E., "Observations on the seedling anatomy of certain Sympetalae. II. 



Compositae." Ann. Bot. 28: 303-319, 1914. 



18. Morse, L. L., Field Notes on Lettuce, Ferry-Morse Seed Co., San Francisco, 



3d ed., 1930. 



19. Oliver, G. W., "New methods of plant breeding." U . S. Dept. Agr. Bur. 



of Plant Ind. Bull. iCj: 1-39, 1910. 



10. Petersen, O. G., "Uber das Auftreten bicollateraler Gefassbiindel in 



verschiedenen Pflanzenfamilien und iiber den Werth derselben fiir die 

 Systematik." Engler, Bot. Jahrb. f. syst. Pjlanxengesch. und Pf{an%engeogr. 3: 

 385-387, 1881. 



11. Phillips, W. S., "Seedling anatomy of Cynara scolymus." Bot. Gaz_. qS: 



711-714, 1937. 

 11. Port, Jean, "The anatomy of the seedling of Lactuca sativa L." Unpubl. 



Research, Hull Bot. Lab., Univ. of Chicago, 1937. 

 13. Scott, D. H., "The development of articulated laticiferous vessels." Quar. 



Jour. Micros. Sci. N. S. 22: 136-153, 1881. 



