305 



Fig. 1. Heterotypic spindle of the Caninae: a. F. sicula Tratt. First stage of 

 luetaphase; 7 bivalents arranged in the equatorial region, 21 singles irregularly 

 scattered on the spindle. h. R. (Glaucae) Jehei At. Both hivalents and singles 

 in the equatorial plate. c. R. (Glaucae) contracta Matss. The partners of the 7 

 hivalents pass to the poles, the 21 segmented singles still in the equatorial plate. 

 d. R. (Villosae) Gren/er i Dgl. The partners of the 7 hivalents on the poles, the 

 halves of the 14 singles in anaphase stage. — Obj, Leitz ^ , comp. ocular IH; 

 the figures reduced i in reproduetion. 



of the single cliromosomes enler Ihe telophase nuclei, bul some 

 of them remaiii in Ihe cj'toplasm and are included in smaller 

 nuclei (lig. 2 c). For thal reason, at the second division, several 

 spindles are found, the smaller of them containing only cliromo- 

 somes derived from the univalents, the two great spindles contain- 

 ing in addilion the 7 partners of the bivalents. 



The second division is of the same type as the lirsl, hut there 



SveiMk BotanMc Tidskrift. 1920. 20 



