Attention was called by Montgomery (1906)to the occasional appearance of perfect flowers in the staminate inflorescence of maize and similar cases were reported by Kempton (1913). Montgomery (1911) described with illustrations a true-breeding type of semi-dwarf dent maize, the ears of which were perfect-flowered. Perfect-flowered maize was described and illustrated also by Blaringhem (1908, pp. 180-183). East and Hayes (1911, pp. 13, 14) noted and illustrated a perfect-flowered sweet corn. Weatherwax (1916, 1917) showed that typically pistillate flowers of maize exhibit in microscopic sections the rudiments of stamens and that staminate flowers show rudiments of pistils.