FIOR/N: SYSJEMATICS Of THE CYMNOSPERMS 389 



LOTSY, J. p. 



1899. Contributions to the life-liistory of the genus Gnetum. I. The grosser morphology 

 of reproduction in Gnetum Gnemon. Ann. Jard. Bot. Buitenzorg, s6r. 2, 

 1:46-114. 



1911. Vortrage iiber botanisclie Stammesgeschichte. III. 1055 pp. Jena: G. Fischer. 



LOUBIERE, A. 



1929. fitude anatomique et comparee du Leptotesta Grand'Euryi n. gen., n. sp. 



(graine silicifi^ du Pecopteris Pluckeneti Schlotheim). Rev. G6n. Bot., 41: 

 593-605. 



1938. Recherches sur I'anatomie comparee des graines de PtSridospermes. Arch. Mus. 



Hist. Nat. Paris, ser. 6, 15:23-57. 



McLean, R. C, and W. R. Ivimey-Cook 



1951. Textbook of Theoretical Botany, "Vol. I. xv + 1069 pp. London: Longmans, 



Green and Co. 



McNab, W. R. 



1873. On the development of the flowers of Welwitschia miraMlis Hook. fil. Trans. 

 Linn. Soc. London, 28:507-512. 



Madlee, K. 



1939. Die pliozane Flora von Frankfurt am Main. Abh. Senckenberg. Naturforsch. 



Ges., no. 446, pp. 1-202. 



Magdefrau, K. 



1942. Palaobiologie der Pflanzen. vii + 396 pp. Jena: G. Fischer. 



Mangenot, G. 



1952. L'evolution de I'ovule, du pistil et du fruit. Ann. Biol., 28 :C 149-162. 



Markgeaf, F. 



1926. Gnetales. In A. Engler, Die natiirlichen Pflanzenfamilien. 2nd ed., 13:407-441. 

 Leipzig: W. Engelmann. 



Martens, P. 



1948. La graine et le tube pollinique; reflexions sur les caracteres propres des 



phanerogames. Bull. Acad. Roy. Belgique Sci., s6r. 5, 33:919-943. 



1951. Les Prephanerogames et le probleme de la graine. Cellule, 54:105-132. 



Maslen, a. J. 



1930. The structure of Mesoxylon platypodium and Mesoxyloides. Ann. Bot., 44: 



503-533. 



Matte, H. 



1904. Recherches sur I'appareil libero-ligneux des Cycadac^es. M6m. Soc. Linn. Nor- 

 mandie, 22:1-233. 



Mayr, E. 



1949. Systematics and the Origin of Species, xiv + 334 pp. New York: Columbia 



Univ. Press. 



Mehra, P. N. 



1939. Some abnormalities in the female strobilus of Ginkgo Mloia L. Proc, Indian 

 Acad. Sci., 8(B) : 211-217. 



1947. A study of the karyotypes and the occurrence of diploid male gametophytes 

 in some species of the genus Ephedra. Proc. Nat. Acad. Sci. India, B16: 

 259-286. 



