1. Amylaceous sugary (suam) is allelomorphic with su. This new sugary gene is expressed only when another gene, du, which produces a dull endosperm similar in appearance to waxy but staining blue instead of red, is also present in the recessive condition. Ratios in most crosses are 15 : 1. The gene suam shows the same linkage relations as su while the gene du is located in the R-g group. The new sugary is not as good a character as the original sugary but it has some bearing on the inheritance of pseudo-starchiness. A synthetic pseudo-starchy can be produced by crossing amylaceous sugary with true sugary. Seed are available.