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Fig. 213. Permanent acetocarmine preparations of two large-chromosomed species of horsetail, x 1000. 

 For explanatory diagrams see Fig. 214. In both «= 108. a. Biakinesis in Equisetum robustum A.Br. 

 from America, b. First meiotic metaphase in E. variegatum Schleich. from Britain (Southport). 



