1 88 
Blackburn .and Harrison . — British Rose Forms. 
Fig. 28 a. Slightly later stage from R. omissa. 
Fig. 29. Diakinesis in R. Sabini, showing some bivalents. 
Fig. 30. Bivalents on the spindle univalents still scattered from R. coriifolia. 
Fig. 31. Complete metaphase in R. rubiginosa. 
Fig. 32. Tripolar spindle in R. rubiginosa. 
Fig. 33. Telophase of bivalents, anaphase of univalents, in R. Sabini. 
Fig. 34. The same end on, showing the lateral position of the spindle in the mother-cell. 
Fig. 35. Slightly later stage in (A\ pimpinellifolia x coriifolia') x pimpinellifolia. 
Fig. 36. The same in R. coriifolia. 
Fig. 3 7* Interkinesis in R. Sabini. 
Fig. 38. Metaphase ot the homotype division in R. Sabini. 
Fig. 39. Anaphase of homotype in R. coriifolia. 
Fig. 40. Curious double spindle from R. Sabini. 
Fig. 41. Interkinesis after the homotype showing numerous nuclei in R. coriifolia. 
Fig. 42. Octad from R. rubiginosa. 
Fig. 43. Young pollen grain from R. sylvestris showing three nuclei. 
Fig. 44. Defective pollen grains with normal from R . flexibilis. x 250. 
Fig. 45. Somatic anaphase from R. sylvestris to show absolute regularity. 
