Studies on the Cytology of some Species of Taraxacum. 469 
Figs. 59, 60. The same in second division; few ehromosomes scattered in cyto- 
plasm. 
Figs. 61 — 63. The same, showing amitotic division of the nucleus. 
Fig. 64. The nucleus of the embryo-sac-mother-cell in synapsis. 
Fig. 65. The same in later stage. 
Fig. 66. The sarne, showing more thickened spirem, which shows more or less 
moniliform appearance. 
Fig. 67. The same in later stage. 
Fig. 68 a, l. The same, cut in two serial sections, showing long bent rod-like 
ehromosomes. 
Fig. 69a, 5. The same, cut into two serial sections, showing diakinesis stage. 
Fig. 70. Embryo-sac-mother-cell, cut in two serial sections, containing long 
nucleus, which shows 40 double long ehromosomes and 3 nucleoli. 
Fig. 71. The same, showing side-view of the first nuclear division. 
Fig. 72 a, J, c. The same, cut more or less obliquely into three serial sections, 
showing the anaphase of the first mitosis. 
Fig. 73. Two megaspores produced by the first division. x 1300. 
Figs. 74, 75. Functional megaspore and micropylar megaspore in degeneration. 
x 1300. 
Fig. 76. Two-nucleated embryo-sac. x 600. 
Fig. 77. Embryo-sac, showing a few endosperm-nuclei, oosphere. one synergid, 
and partly degenerated antipodal cells. x 410. 
