20 TEXT-BOOK OF FUNGI 



The division of the nucleus is distinctly karyokinetic or 

 indirect, and again corresponds in all essentials with that 

 observed in higher plants and animals. A suggestion of 

 the presence of centrospheres was noted at each end of the 

 nuclear spindle in the species mentioned above, but at 



FIG. 3. i, equatorial plate stage of first spindle. A nucleolus 

 is present, as are also centrosomes and astral rays at poles 

 of spindle ; from ascus of Hydnobolites. 2, polar view, showing 

 centrosome and astral rays ; from nucleus in ascus of Hydno- 

 bolites. 3, first spindle after cleavage of chromosomes, minute 

 centrosomes are present at the poles of the spindle ; from ascus 

 of Neottiella albocincta. 4, elongated nucleus in young spore 

 of Hydnobolites, showing a nucleolus, centrosome, and astral 

 rays. 5, basidium of Amanita muscaria with nucleus, in which 

 the nuclear thread, or threads, is broken up into a number of 

 short, slightly curved rods. The protoplasm of the basidium 

 shows two large vacuoles. (Figs. 1-4 after Faull, fig. 5 after 

 Wager.) All highly mag. 



a later date these bodies were clearly observed by Wager 

 during the division of the nucleus in Agaricus galericulatus. 

 Gjurasin has also described the presence of radiating striae 

 probably corresponding to centrosomes, at the poles of the 



