5. The series of r and R alleles listed in the corn linkage summary does not include the one designated in the original paper on plant colors (pp. 111-113) as rrg. This allele was there described as giving in the dilute types (A b Pl and A b pl) green anthers with red color at the base of the plants, whereas the ordinary rg allele gave green anthers and green base plants. One suggestion is that the superscript for the r-series may need to be a tri-letter one (anther color, silk color, and base color).

C. R. Burnham