2. Developmental morphology of "Corn Grass".

The mutant corn grass upon which W. R. Singleton has reported in earlier News Letters has been subjected to a developmental morphological analysis. The evidence indicates that the mutation acts to change the pattern of meristematic activity.

The meristematic activity of corn grass differs from that of normal controls with respect to the formation of leaf primordia, the formation of stem tissues, and also with respect to the general rate of development and maturation. The corn grass plants show a greater degree of sensitivity to the light period than do normal plants.

W. Gordon Whaley