Fig. 45. Dryopteris Borreri var. polydactyla 

 Wills, a diploid form of D, Borreri 

 with 82 chromosomes, from an aceto- 

 carmine squash, x 1000. For ex- 

 planatory diagram see Fig. 47. 





Fig. 46. Triploid Dryopteris Borreri, normal form. 

 Acetocarmine squash, x 1000. For explanatory 

 diagram see Fig. 48. 



3< 



^% QjCjf 





B. Borreri van polijdacft/la Wil/s "n "= 82 

 Fig. 47. Explanatory diagram to Fig. 45. 

 X 1500. 



D. Borreri "n "= 123 



Fig. 48. Explanatory diagram to Fig. 46. x 1500. 



