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BOTANICAL GAZETTE [APRIL 
LITERATURE CITED 
STRASBURGER, Ep., Uber das Verhalten des Pollens und die Begrucht- 
ungsvorange bei ‘io Gymnospermen. 1892. 
MrvyakeE, K., On the development of the sexual organs and fertilization in 
Picea cid Ann. Botany 17:351—372. 1903. 
PoLtock, JAMES B., Variations in the pollen grain of Picea excelsa. 
Amer. Nat. 49:253- 286. 
JuranyI, L., Bau und Batwickelang des Pollens bei Ceratozamia longi- 
folia. Jahrb. we. Bot. 8:832-400. 1872. 
TSCHISTIAKOFF, ee zur oe. der Pflanzenzelle. Der Pollen 
der Coniferen. Bot. Zeit. 33:86-88, 97-103. 1875. 
BELAJEFF, W., Zur Lehre von dem Polmachinase der Gymnospermen. 
Ber. Deutsch. Bot. aoe 91: 280-286. 1891 
9 
. Lawson, A. A., The phase of the nucleus known as synapsis. Trans. 
Roy. Soc. Edinb. 47: ee IQI2. 
, Nuclear osmosis as a factor in mitosis. Trans. Roy. Soc. Edinb. 
pripee ne) 1913. 
SHARP, L. W., Somatic chromosomes in Vicia. La Cellule 29: 297-328. 
1913. 
Hutcutnson, A. H., The male gametophyte of Abies balsamea. Bot. 
GAZ. 57:148-153. 1914 
CHAMBERLAIN, C. J., The euis grain of Lilium philadelphicum. Bot. 
GAZ. 33: 423-430. 1897 
SCHAFFNER, J. H.., The development of stamens and carpels of Typha 
latifolia. Bor. ~~ . 24:93-102 
GUIGNARD, L., Recherches sur la Skvelunpeiest de peepee et du pollen 
des pee te Ann. Sci. Nat. Bot. VI. 14: 26-45. 
Pace, Lutu, The gametophytes of Calopogon. ie en 48:126-137- 
pls. 7-9. 
1909. 
. CoKER, W. C., On the spores of certain Coniferae. Bort. Gaz. 38: 206- 
213. 1904. 
. CoKER, W. C., Notes on the gametophytes and embryo of Podocarpus- 
‘Bot. Gaz. 33:89-107. 1900. 
JEFFREY, E. C., and Curysier, M. A., The microgametophyte of the 
Podocarpineae. Amer. Nat. 41:102-1 ae 1907. 
FERGUSON, Marcaret C., Contributions to the life history of Pims- 
Proc. Wash. Acad. Sci. 6:1-202. 
904. 
. Younc, Mary S., The male gametophyte of Dacrydium. Bot. Gat. 
44:189-196. 1907. 
————, The morphology of the Podocarpineae. Bor. Gaz. 50:81-100- 
IgIo. 
CALDWELL, Or1s W., Microcycas calocoma. Bor. Gaz. 44:118-141- 1997 
