362 University of California Publications in Agricultural Sciences [Vol. 2 



^^A 







e w . 



Fig. 2. Somatic metaphase figures from root tips of: a, T. pratense; h, T, 

 pratense; c, T. iiwarn-atum ; d, T. aJexandrinum ; c, T. hybridum ; f, T. suhtcr- 

 ranum; g, T. minus; h, T. glomeratum. Figure 2b was stained with gentian- 

 violet, the others with Haidenhain's liaematoxylin. 



