2 4 



GENUS PALLAVICINIA 



Fig. 12. 



A-M. Spermatogenesis in Pallavicinki Zollinger^. 



L. Pair of spermatocytes seen from above. 



M. Similar spermatocytes seen in profile. 



N, 0. Last mitosis in the spermatocytes of Pallavicinia radiculosa. 



P-Q. Polar view. 



R. Spermatozoids of P. Zollingeri. 



S. Pair of spermatocytes of P. Levieri. 



All magnified about 2,000 times. 



