June xx, 1917 
Hybrids of Zea ramosa and Zea tunicata 
395 
tion, (2) the recurrence of both parental types in an apparently pure 
form, and (3) plants combining the characters of both the mutations. 
In the last group normal expression is inhibited, and the result is fre¬ 
quently the appearance of a totally different type of inflorescence called 
“cauliflower,” which is sterile, the character being abnormal to the 
extent that the tissue remains in an embryonic condition, the result being 
a much-branched, white, succulent mass. 
LITERATURE CITED 
Bi,aringhem, Louis. 
1907. Mutation et traumatismes. 248 p., 8 fold. pi. Paris. Index bibliograph- 
ique, p. 229-239. 
Cook, O. F. 
1915. Brachysm, a heriditary deformity of cotton and other plants. In Jour. Agr. 
Research, v. 3, no. 5, p. 387-400, pi. 53-62. 
East, E. M., and Hayes, H. K. 
1911. Inheritance in maize. Conn. Agr. Exp. Sta. Bui. 167, 142 p., 25 pi. Litera¬ 
ture cited, p. 138-142. 
Gernert, W. B. 
1912. A new subspecies of Zea mays L. In Amer. Nat., v. 46, no. 550, p. 616-622, 
fig. a-c. 
KraEFT, Guido. 
1870. Die normale und aiiormale Metamorphose der Maispflanze. 71 p., 2 fold. pi. 
Wien. 
Leavitt, R. G. 
1909. A vegetative mutant, and the principle of homceosis in plants. In Bot. Gaz., 
v. 47, no. 1, p. 30-68, 19 fig. 
Parker, A. C. 
1910. Iroquois uses of maize and other food plants. N. Y. State Mus. Bui. 144, 119 
P*> 23 fig., 31 pi. List of authorities quoted, p. 110-113. 
Sconce, H. J. 
1912. Scientific com breeding. In Ann. Rpt. Amer. Breeders’ Assoc., v. 7/8, p. 
43-50, illus. 
Sturtevant, E. L. 
1894. Notes on maize. In Bui. Torrey Bot. Club, v. si, no. 8, p. 319-343; no. 12, 
P- 503-523* 
